Pontoon is an employment consultancy. We put expertise, energy, and enthusiasm into improving everyone’s chance of being part of the workplace. We respect and appreciate people of all ethnicities, generations, religious beliefs, sexual orientations, gender identities, and more. We do this by showcasing their talents, skills, and unique experience in an inclusive environment that helps them thrive.

Job Title: Linux Engineer Lead

Contract: Initial 6-Month Contract with potential to extend.

Location: London - Hybrid (3 days in office)

Rate: £450 - £500 inside umbrella

About the role:

We are establishing a new Linux and container platform capability within EMEA to support modern, resilient, and scalable infrastructure services. This role is critical to the design, build, and operation of that capability.

The Linux Engineer lead is a hands-on technical role responsible for the engineering, stability, and operational readiness of enterprise Linux platforms underpinning containerised workloads, with a strong focus on OpenShift.

The role will lead by technical expertise, following established engineering standards, ensuring platform resilience, and enabling the safe onboarding of production workloads onto Linux and container platforms.

Main duties:

• Key engineer for Linux platforms supporting enterprise container workloads
• Technical authority for Linux underpinning OpenShift within EMEA
• Supports platforms designed to host business-critical and production workloads
• Works across Platform Engineering, Automation, Security, and Operations team
• Design, build, and operate enterprise Linux platforms (primarily RHEL) supporting OpenShift and Kubernetes environments
• Act as a technical authority for Linux and container platform engineering within EMEA
• Engineer and maintain OpenShift clusters with a focus on stability, performance, lifecycle management, and upgrade readiness
• Ensure Linux platforms are built and maintained in line with security hardening standards and operational best practice
• Collaborate closely with Automation Engineering to ensure Linux and OpenShift platforms are fully automated using Ansible and GitLab-based workflows
• Provide technical input into platform architecture, capacity planning, and production readiness assessments
• Support the onboarding of production workloads onto OpenShift, ensuring operational, monitoring, and support requirements are met
• Participate in on-call escalation and incident bridges once platforms are hosting production workloads
• Work out of hours and at weekends where required to support platform changes, incidents, or maintenance activities
• Act as a senior escalation point for complex Linux and container-related incidents
• Integrate Linux and OpenShift platforms with enterprise monitoring and logging solutions, including Splunk
• Collaborate with Security teams to ensure platforms meet regulatory, audit, and compliance requirements
• Maintain high-quality documentation, standards, and operational runbooks
• Continuously develop technical skills and maintain deep expertise in Linux and container platform technologies

Knowledge and Experience required:

• Strong, hands-on experience engineering and operating enterprise Linux platforms (RHEL) * Proven experience administering and supporting OpenShift in production or production-like environments. * Solid understanding of Kubernetes concepts, architecture, and operational models * Experience using Ansible for Linux configuration management and platform automation * Experience working with Git-based workflows, preferably GitLab * Familiarity with enterprise monitoring and logging solutions, including Splunk * Experience operating platforms in regulated, change-controlled environments * Strong understanding of production operations, incident management, and platform resilience
• Collaborating effectively across technical teams and stakeholders * Working within strict change control and mature process-driven environments

Skills and aptitudes required:

• Highly technical, hands-on engineer with a strong sense of ownership * Comfortable acting as a senior technical escalation point * Able to communicate complex technical concepts clearly to engineering and non-engineering stakeholders * A dependable self-starter who can operate with minimal supervision * Calm and effective under pressure during incidents * Detail-oriented with a strong focus on platform stability and quality * Collaborative mindset, able to work across multiple teams and regions

Education:

• Degree in Computer Science, Engineering, or a related discipline, or equivalent practical experience.

Adecco is a disability-confident employer. It is important to us that we run an inclusive and accessible recruitment process to support candidates of all backgrounds and all abilities to apply. Adecco is committed to building a supportive environment for you to explore the next steps in your career. If you require reasonable adjustments at any stage, please let us know and we will be happy to support you.

We use generative AI tools to support our candidate screening process. This helps us ensure a fair, consistent, and efficient experience for all applicants. Rest assured, all final decisions are made by our hiring team, and your application will be reviewed with care and attention.

Pontoon is an employment consultancy. We put expertise, energy, and enthusiasm into improving everyone’s chance of being part of the workplace. We respect and appreciate people of all ethnicities, generations, religious beliefs, sexual orientations, gender identities, and more. We do this by showcasing their talents, skills, and unique experience in an inclusive environment that helps them thrive.

Job Title: Linux Engineer Lead

Contract: Initial 6-Month Contract with potential to extend.

Location: London - Hybrid (3 days in office)

Rate: £450 - £500 inside umbrella

About the role:

We are establishing a new Linux and container platform capability within EMEA to support modern, resilient, and scalable infrastructure services. This role is critical to the design, build, and operation of that capability.

The Linux Engineer lead is a hands-on technical role responsible for the engineering, stability, and operational readiness of enterprise Linux platforms underpinning containerised workloads, with a strong focus on OpenShift.

The role will lead by technical expertise, following established engineering standards, ensuring platform resilience, and enabling the safe onboarding of production workloads onto Linux and container platforms.

Main duties:

• Key engineer for Linux platforms supporting enterprise container workloads
• Technical authority for Linux underpinning OpenShift within EMEA
• Supports platforms designed to host business-critical and production workloads
• Works across Platform Engineering, Automation, Security, and Operations team
• Design, build, and operate enterprise Linux platforms (primarily RHEL) supporting OpenShift and Kubernetes environments
• Act as a technical authority for Linux and container platform engineering within EMEA
• Engineer and maintain OpenShift clusters with a focus on stability, performance, life cycle management, and upgrade readiness
• Ensure Linux platforms are built and maintained in line with security hardening standards and operational best practice
• Collaborate closely with Automation Engineering to ensure Linux and OpenShift platforms are fully automated using Ansible and GitLab-based workflows
• Provide technical input into platform architecture, capacity planning, and production readiness assessments
• Support the onboarding of production workloads onto OpenShift, ensuring operational, monitoring, and support requirements are met
• Participate in on-call escalation and incident bridges once platforms are hosting production workloads
• Work out of hours and at weekends where required to support platform changes, incidents, or maintenance activities
• Act as a senior escalation point for complex Linux and container-related incidents
• Integrate Linux and OpenShift platforms with enterprise monitoring and logging solutions, including Splunk
• Collaborate with Security teams to ensure platforms meet regulatory, audit, and compliance requirements
• Maintain high-quality documentation, standards, and operational runbooks
• Continuously develop technical skills and maintain deep expertise in Linux and container platform technologies

Knowledge and Experience required:

. Strong, hands-on experience engineering and operating enterprise Linux platforms (RHEL)
. Proven experience administering and supporting OpenShift in production or production-like environments.
. Solid understanding of Kubernetes concepts, architecture, and operational models
. Experience using Ansible for Linux configuration management and platform automation
. Experience working with Git-based workflows, preferably GitLab
. Familiarity with enterprise monitoring and logging solutions, including Splunk
. Experience operating platforms in regulated, change-controlled environments
. Strong understanding of production operations, incident management, and platform resilience.
. Collaborating effectively across technical teams and stakeholders
. Working within strict change control and mature process-driven environments

Skills and aptitudes required:

. Highly technical, hands-on engineer with a strong sense of ownership
. Comfortable acting as a senior technical escalation point
. Able to communicate complex technical concepts clearly to engineering and non-engineering stakeholders
. A dependable self-starter who can operate with minimal supervision
. Calm and effective under pressure during incidents
. Detail-oriented with a strong focus on platform stability and quality
. Collaborative mindset, able to work across multiple teams and regions

Education:

• Degree in Computer Science, Engineering, or a related discipline, or equivalent practical experience.

Adecco is a disability-confident employer. It is important to us that we run an inclusive and accessible recruitment process to support candidates of all backgrounds and all abilities to apply. Adecco is committed to building a supportive environment for you to explore the next steps in your career. If you require reasonable adjustments at any stage, please let us know and we will be happy to support you.

We use generative AI tools to support our candidate screening process. This helps us ensure a fair, consistent, and efficient experience for all applicants. Rest assured, all final decisions are made by our hiring team, and your application will be reviewed with care and attention.

Azure DevOps Engineer 6-month contract SC Cleared London/Remote Outside of IR35

My SC Cleared customer is seeking a highly skilled Azure DevOps / Platform Engineer with deep, hands-on experience in Azure-native engineering and advanced Infrastructure as Code (IaC) practices. This role is ideal for someone who operates at the intersection of DevOps and Software Engineering bringing a strong development mindset to infrastructure design, automation, and testing.

Key Skills & Experience from the Azure DevOps Engineer:

• Active SC Clearance ideal/lapsed considered
• Advanced Azure Engineering
  • Strong experience designing for high availability
  • Deep understanding of Azure-native services and architecture patterns
• Infrastructure as Code (IaC)
  • Expert-level proficiency with Terraform and/or Bicep
  • Strong focus on modularity, reusability, and maintainability
  • Experience integrating automated testing frameworks (e.g. Terratest, Checkov)
• Azure Networking & Security
  • Hands-on experience with:
    • Managed Identities
    • Private Endpoints
    • Role-Based Access Control (RBAC)
• CI/CD & Automation
  • Proven experience building advanced pipelines using GitHub Actions
  • Strong understanding of pipeline orchestration, automation, and deployment strategies

Key Responsibilities of the Azure DevOps Engineer:

• Design and implement high availability Azure architectures, including regional failover and load balancing strategies embedded within IaC templates
• Build and maintain scalable, reusable Terraform and/or Bicep modules following best practices in modular design
• Champion Test Driven Development (TDD) principles within infrastructure pipelines
• Implement automated security and compliance checks using tools such as Checkov or Terratest
• Develop and manage complex CI/CD workflows using GitHub Actions
• Engineer secure Azure environments using Managed Identities, Private Endpoints, and RBAC

Apply now to speak with VIQU IT in confidence. Or reach out to Connor Smal via the VIQU IT website.

Do you know someone great? We ll thank you with up to £1,000 if your referral is successful (terms apply).

For more exciting roles and opportunities like this, please follow us on IT Recruitment.

Croydon
6 Month Contract
£500/day (Outside IR35)

DevOps Engineer needed with both SC and NPPV3 Security Clearance, plus strong AWS Cloud platforms experience.

6 Month Rolling Contract based in Croydon. Start ASAP in April/May 2026.

Hybrid Working - 3-4 days/week remote (WFH) + 1-2 days/week working from the office in Croydon.

A chance to work with a leading global IT transformation business specialising in large-scale Government projects:

• DevOps Engineer needed to build, automate + delivering highly available, secure + scalable AWS Cloud environments.
• In-depth AWS Services expertise including: EC2, RDS, Aurora PG, VPC, S3, IAM, CloudWatch, KMS, and Amazon Linux 2023.
• DevOps Tools: Terraform, Jenkins, Docker + Groovy pipelines experience.
• Scripting: Shell, Python, PowerShell, Perl, Java.
• PostgreSQL admin, performance tuning, HA, replication, backup/DR, Git, Jira, Confluence, ServiceNow.
• Monitoring tools: Grafana, Prometheus + Alert Manager.
• Key Tasks: troubleshooting, root cause analysis, 24/7 production, managing technical escalations, leading workshops, supporting Agile teams + removing delivery blockers.
• Advantageous Skills: Linux Sys Admin, AD, networking, Firewalls, switch config/patching, AWS/Azure Certifications.

+6 months + +Fully remote working +SC cleared - must hold current active clearance +Sole British nationals only - due to nature of the project Skills: +AWS +Kubernetes +Public Sector experience +Testing experience - can set the Testing process up from beginning to end and to be able to own it We're looking for an experienced DevOps Tester, this is a pivotal role in maintaining critical national infrastructure where scalability and resilience are essential. We're looking for a highly skilled DevOps engineer with a strong background in testing (including APIs). The ideal candidate should be self-motivated and results-driven, capable of thriving in an Agile team. You'll need to be comfortable with Confluence for documentation and Jira for project tracking and story management. Your main responsibility will be to develop and structure a comprehensive test framework. This includes creating approaches and plans, gaining approval for those approaches, and ultimately delivering a complex set of functional and performance tests for software components running within an AWS multi-account model. You will be working alongside client teams and supporting, as required, in a 3rd line capacity. Key technologies you'll be working with include Vault, Consul, Kubernetes, various AWS services (Compute, Identity), Prometheus for monitoring, ELK, Jenkins for CI/CD, and scripting languages such as Python, Ansible, and/or Bash. Knowledge of proxies and firewalls, including Fortinet and Palo Alto, would be an advantage. If you'd like to discuss this DevOps Tester in more detail, please send your updated CV to (url removed) and I will get in touch.

Job title: Lead Infrastructure Automation Engineer (on perm and Cloud)
Contract: 6 Months -possibility for extension
Location: London HEX - 3 days a week
Rate: Competitive day rate (Inside IR35)
Working pattern: Full time

Are you ready to take the lead in revolutionising infrastructure automation? Our client, a dynamic and innovative organisation, is on the lookout for a passionate Infrastructure Automation Engineer Lead - VP to spearhead their ambitious automation initiative across all infrastructure functions. This is your chance to drive significant change and enhance the efficiency of global operations!

About the Role:

As the Infrastructure Automation Engineer Lead, you will play a pivotal role in accelerating the adoption of infrastructure-as-code and automation solutions. Your expertise will help shape modern tooling strategies, ensuring scalable and repeatable automation solutions across various infrastructure domains.

What We’re Looking For:

• Expertise in Automation: Proven experience with Infrastructure Automation, Infrastructure-as-Code, and automation solutions.
• Technical Proficiency: Strong skills in Ansible, Terraform, Python, and cloud technologies.
• Transformation / Deployment : on perm and Cloud
• DevSecOps Knowledge: Familiarity with compliance and security practises in automation.
• Collaborative Spirit: Ability to manage relationships across teams and regions, facilitating effective communication and cooperation.
• Adaptability: Preparedness to work during unsociable hours and be available for escalations when needed.

Key Responsibilities:

• Lead Automation Initiatives: Drive automation supporting 3000 servers and services globally.
• Collaborative Design: Work closely with infrastructure SMEs, SREs, DevOps teams, and security to create reusable automation frameworks.
• Innovative Solutions: Design, build, and maintain automation workflows and IaC modules using tools like Ansible, Terraform, and Python.
• standardisation Advocate: Promote standardisation of automation practises across platform teams for consistency and reuse.
• Transformative Collaboration: Partner with Development, Security, and Global Infrastructure teams to replace manual processes with scalable automated solutions.
• Roadmap Delivery: Contribute to the Infrastructure Automation Programme, achieving defined roadmaps and KPIs.
• Security Compliance: Ensure all automation solutions meet stringent security and compliance requirements.

Why Join Us?

• Transformational Impact: Be at the forefront of an essential initiative that enhances operational efficiency and resilience.
• Team Environment: Work within a dedicated team that values collaboration and innovation.
• Career Growth: Opportunities for ongoing development of technical skills and career advancement within a forward-thinking organisation.

If you’re excited about leading the charge in infrastructure automation and are ready to make a tangible impact, we would love to hear from you! Join our client on this exhilarating journey towards technological excellence.

Apply Now! Your future begins here, where innovation meets opportunity!

Pontoon is an employment consultancy. We put expertise, energy, and enthusiasm into improving everyone’s chance of being part of the workplace. We respect and appreciate people of all ethnicities, generations, religious beliefs, sexual orientations, gender identities, and more. We do this by showcasing their talents, skills, and unique experience in an inclusive environment that helps them thrive. If you require reasonable adjustments at any stage, please let us know and we will be happy to support you.

Azure DevOps Engineer – 6-month contract – SC Cleared – London/Remote – Outside of IR35 My SC Cleared customer is seeking a highly skilled Azure DevOps / Platform Engineer with deep, hands-on experience in Azure-native engineering and advanced Infrastructure as Code (IaC) practices. This role is ideal for someone who operates at the intersection of DevOps and Software Engineering—bringing a strong development mindset to infrastructure design, automation, and testing. Key Skills & Experience from the Azure DevOps Engineer: Active SC Clearance ideal/lapsed considered Advanced Azure Engineering Strong experience designing for high availability Deep understanding of Azure-native services and architecture patterns Infrastructure as Code (IaC) Expert-level proficiency with Terraform and/or Bicep Strong focus on modularity, reusability, and maintainability Experience integrating automated testing frameworks (e.g. Terratest, Checkov) Azure Networking & Security Hands-on experience with: Managed Identities Private Endpoints Role-Based Access Control (RBAC) CI/CD & Automation Proven experience building advanced pipelines using GitHub Actions Strong understanding of pipeline orchestration, automation, and deployment strategies Key Responsibilities of the Azure DevOps Engineer: Design and implement high availability Azure architectures, including regional failover and load balancing strategies embedded within IaC templates Build and maintain scalable, reusable Terraform and/or Bicep modules following best practices in modular design Champion Test Driven Development (TDD) principles within infrastructure pipelines Implement automated security and compliance checks using tools such as Checkov or Terratest Develop and manage complex CI/CD workflows using GitHub Actions Engineer secure Azure environments using Managed Identities, Private Endpoints, and RBAC Apply now to speak with VIQU IT in confidence. Or reach out to Connor Smal via the VIQU IT website. Do you know someone great? We'll thank you with up to £1,000 if your referral is successful (terms apply). For more exciting roles and opportunities like this, please follow us on LinkedIn @VIQU IT Recruitment. TPBN1\_UKTJ

Mechanical Shift Engineer Continental Days & Nights - Building Services Canary Wharf, East London £50,000 + Package

An exciting opportunity to join an established building services company based in the heart of Canary Wharf has arisen!

Joselyn Search are currently recruiting for a Mechanical Shift Engineer to work as part of an engineering team and be based at a large multi-tenanted commercial office building in Canary Wharf. The ideal candidate will have experience carrying out planned and reactive building maintenance within a large commercial building environment, have a strong understanding of Facilities Maintenance with a proven track record in commercial building services.

This position would be ideal for a Mechanical Shift Engineer currently in a similar position, in return the company are offering a competitive salary up £50,000 with a potential route into further career progression.

Key duties & Responsibilities

• Carry out all aspects of mechanical maintenance activities across mechanical plant and systems
• Hands-on PPM and reactive maintenance
• Commercial heating systems
• AHUs, FCUs, and associated HVAC equipment.
• Carry out system fault-finding and diagnostics
• Liaise directly with the client’s estates teams to ensure maintenance activities are aligned
• Monitor mechanical plant
• Pumps, Motors, Seals, Bearings
• Air Conditioning - Air Handling Units / Fan Coil Unit (Filter changes, cleaning)
• Water Treatment (Temperature checks / Not dosing)
• Plumbing - Unblocking toilets, replacing taps, washers etc
• Monitor the BMS systems
• Supervise contractors and assist with minor project works or installations
• Maintain clear documentation, logbooks, and records

Hours of Work & Package Info

Shift Engineer Continental Shift Pattern Days & Nights

Basic Salary of up to £50,000

25 days holiday + Bank Holidays

Requirements

• Mechanical qualifications - NVQ or City & Guilds Level 2 & 3

Summary:

Fantastic opportunity to join an industry-leading global market maker, using innovative and cutting-edge technology. This is an elite team of the smartest, most creative engineers, who partner with different teams across the business to solve their most pressing issues. Forget the stuffy world of finance you thought you knew; developers here are tech-driven and truly world-class.

Looking to expand their current SRE/Support Engineer team, this role offers the opportunity to:

• Provide crucial first- and second- level support for applications and processes
• Take ownership of incident and problem management frameworks
• Collaborate with development and SRE teams to improve tooling & monitoring
• Identify & resolve issues as soon as they arise, providing frequent updates to key stakeholders
• Provide global coverage for system support and start-of-day/intraday health checks

You’ll be expected to be a self-starter who demonstrates a strong sense of ownership, execution and the ability to work and deliver results with minimal supervision.

Requirements:

• Previous commercial experience providing L1/ L2 support
• Experience with Linux/Unix OS and K8s
• Knowledge of databases, e.g. Sybase, SQL or KDB/Q
• Skilled working with Java (JVM, Heap management)
• Familiarity with Python and/or Q/KDB a plus
• Minimum bachelor’s degree in Engineering, Computer Science (or related field)
• Excellent communicator with both technical and non-technical colleagues

Benefits:

• Significant salary + bonus + benefits
• Build complex software solutions to solve challenging problems in agile environment
• Work with some of the smartest minds in the industry from a range of backgrounds

Whilst we carefully review all applications, to all jobs, due to the high volume of applications we receive it is not possible to respond to those who have not been successful.

Contact
If you would like to know more about this position, please do not hesitate to get in touch!

Mike McLoughlin
mike.mcloughlin@oxfordknight.co.uk
https://www.linkedin.com/in/michaelmcloughlin00/

Application Support Specialist - Front Office, Fixed Income

A Major investment bank requires an Application Support Specialist to join their Fixed Income E-Trading IT area. The successful candidate will play a pivotal role towards ongoing maintenance, project based ECN on-boarding, and support of electronically traded credit and rates Fixed Income products.

Responsibilities for the Application Support Specialist - Front Office, Fixed Income will include analysis, configuration, 2nd line support of the Fixed Income Electronic Trading platform in addition to new releases of the product. Candidates will have detailed Application Support experience, ITRS Geneos support and configuration experience, a solid understanding of Unix, SQL Fixed Income Rates products or FX and the ability to communicate at all levels within highly demanding Front Office environments.

Essential skills for the Application Support Specialist - Front Office, Fixed Income/FX:

• Production Support Analyst
• Front Office
• Experienced Across L2 Application Support
• Fixed Income (Rates/Credit) or EFX
• Unix/Linux
• SQL

Application Support Specialist - Front Office, Fixed Income

London

ROLE PROFILE:

The London Stock Exchange Group seeks an experienced, dedicated and driven Senior Attack Monitoring Analyst to join the Global Security Operations team!

ROLE SUMMARY:

LSEGSecurity Operationsis a central function employingpeople, process and technology to continuously monitor and respond to cyber security incidents.

This role is for a Senior Attack Monitoring Analyst for the Global Security Operations Centre (GSOC). The role is responsible for identifying and responding to cyber security incidents and improving the defensive capabilities of the GSOC.

The ideal candidate will have a solid technical background, with a firm understanding of modern attack techniques coupled with knowledge of the typical lifecycle of an attack.

WORKING HOURS:

This role is available in two locations: London and Singapore.

Working hours will follow standard UK business hours (9:00 AM - 6:00 PM GMT) or Singapore hours (preferably 2:00 PM - 10:00 PM SGT). Singapore working hours are flexible and can be adjusted based on candidate availability.

RESPONSIBILITIES:

• Triage security events and employ a methodical and coherent response to security incidents adopting playbooks where necessary.

• Competently operate a chosen SIEM (e.g., Splunk/QRadar/LogRhythm) for incident investigations, or for the development of monitoring dashboards.

• Utilise playbooks, existing knowledge and accurate online resources for guidance when responding to incidents.

• Utilise online resources for researching and collecting threat intelligence to improve the SOC’s abilities to detect cyber-attacks.

• Develop new, or improve existing run books and use cases based on investigations and knowledge of modern attacks.

• Stay up to date with current vulnerabilities, attacks, and countermeasures.

• Identify, respond and remediate cyber events generated through monitoring technologies.

EXPERIENCE:

• Preferred experience with operating or administrating a SIEM (e.g., Splunk/QRadar/LogRhythm).

• Solid understanding of networks including the TCP/IP stack, typical organisation architectures, and common protocols abused by malware.

• Experience in security event analysis & triage, incident handling and root-cause identification.

• Understanding of tools, techniques and procedures that attackers use to compromise organisations, ideally from direct experience.

• Knowledge of cyber security either academically or within corporate environments.

• Ability to work in a fast-paced and demanding environment while remaining calm.

• Strong verbal and written communication and collaboration skills.

• Security industry specific and core technical accreditations such as OSCP, GIAC, CCNA.

• Certification demonstrating SIEM operational competences.

• Proficient with one or more programming languages (e.g., Python, PowerShell, Java, C#).

Career Stage:
Senior Associate

London Stock Exchange Group (LSEG) Information:

Join us and be part of a team that values innovation, quality, and continuous improvement. If you’re ready to take your career to the next level and make a significant impact, we’d love to hear from you.

LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.

Our purpose is the foundation on which our culture is built. Our values of Integrity, Partnership, Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions.

Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce.

We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone’s race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants’ and employees’ religious practices and beliefs, as well as mental health or physical disability needs.

You will be part of a collaborative and creative culture where we encourage new ideas. We are committed to sustainability across our global business and we are proud to partner with our customers to help them meet their sustainability objectives. Our charity, the LSEG Foundation provides charitable grants to community groups that help people access economic opportunities and build a secure future with financial independence. Colleagues can get involved through fundraising and volunteering.

LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.

Please take a moment to read this privacy notice carefully, as it describes what personal information London Stock Exchange Group (LSEG) (we) may hold about you, what it’s used for, and how it’s obtained, your rights and how to contact us as a data subject .

If you are submitting as a Recruitment Agency Partner, it is essential and your responsibility to ensure that candidates applying to LSEG are aware of this privacy notice.

AWS Cloud Security Engineer - Global Quant Trading Environment - Hong Kong - Relocation Package

A leading global trading and investment firm is hiring an AWS Cloud Security Engineer to strengthen its security posture across high-performance research and trading platforms.

You’ll be at the centre of securing and optimising AWS infrastructure - from IAM and SCP/RCP policy management through to encryption, automation, and real-time monitoring.

This role offers exposure to cutting-edge environments where technology, data, and security are mission-critical.

What you’ll do

• Implement and enhance AWS cloud security controls.
• Manage IAM frameworks and enforce least-privilege access.
• Deploy GuardDuty, Security Hub, Config, and CloudTrail for proactive monitoring.
• Support encryption strategies (KMS) to safeguard sensitive data.
• Define and maintain AWS security baselines and compliance checks.
• Build automation frameworks using Terraform/CloudFormation.
• Strengthen cloud security operations via CSPM, CWNP, and ASPM methodologies.
• Partner with IT, risk, and leadership teams to align security with business goals.

What we’re looking for

• 3+ years in cloud security, platform security, or DevSecOps.
• Strong AWS expertise, especially IAM, SCP, RCP, and security baselining.
• Hands-on with Terraform/CloudFormation and Python scripting.
• Familiarity with cloud security operations tooling (CSPM/CWNP/ASPM).
• Strong analytical, problem-solving, and stakeholder engagement skills.
• A growth mindset with eagerness to expand in cloud security.

If you’re seeking a high-impact role where AWS security is front and centre, this is a standout opportunity.

Leading industry & relocation packages available

Linux Administrator | Systematic Hedge Fund

A high-performance systematic hedge fund are seeking an Infrastructure Operations Engineer (Linux Admin) to help maintain and evolve the global Linux estate that underpins all trading and research activity. This team is responsible for ensuring the firm’s large-scale compute environment remains stable, well-maintained, and ready to support continuous growth across quant, trading, and data engineering functions.

You’ll work across server deployments, Linux administration, hardware lifecycle, automation, and platform improvements - collaborating closely with engineering, EUC, and application teams. This is a hands-on role suited to someone who enjoys Linux admin and automation work within a highly technical environment.

Role Overview

• Ensure the health, stability, and performance of the firm’s global Linux platform across trading and research workloads.
• Deploy new Linux servers and manage full end-to-end build processes from hardware provisioning through OS installation.
• Carry out system upgrades, patching, and platform maintenance across Red Hat-based environments.
• Contribute to automation, monitoring, and deployment initiatives using modern tooling.
• Work closely with EUC, application, and engineering teams on both project delivery and operational support.
• Produce and maintain clear documentation to support consistency and repeatability across the estate.
• Participate in an on-call rotation as part of a global operational team.

Requirements

• Strong hands-on Linux administration experience (Red Hat, CentOS, or similar).
• Full server build capability - from hardware provisioning to OS installation and configuration.
• Understanding of AMD/Intel server hardware and common failure types.
• Solid networking fundamentals (TCP/UDP, LAN/WAN concepts).
• Experience with automation tooling, ideally Ansible.
• Scripting familiarity (Bash or Python) for automation and troubleshooting.
• Bonus: Experience with storage technologies such as NFS or SAN environments.

Company Highlights

• Technology-led culture – drives both trading and internal engineering investment
• c.1,000 employees – large enough for scale, small enough for meaningful individual impact
• Brand-new London HQ – core engineering and trading hub with free on-site gym
• Flat structure – direct access to senior engineers and C-level leadership
• Excellent Glassdoor ratings consistently quoting a strong work-life balance
• Benefits: Free breakfast & lunch, 13% pension, year-one guaranteed bonus, and more

Discover your future at Citi
Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you’ll have the opportunity to grow your career, give back to your community and make a real impact.

Job Overview
Citi, the world leading global bank, has approximately 200 million customer accounts and a presence in more than 160 countries and jurisdictions worldwide. Citi provides consumers, corporations, governments, and institutions with a broad range of financial products and services, including consumer banking and credit, corporate and investment banking, securities brokerage, transaction services, and wealth management. Citi enables clients to achieve their strategic financial objectives by providing them with cutting-edge ideas, best-in-class products and solutions, and unparalleled access to capital and liquidity.

The Team:
Cloud Technology Services (CTS) is responsible for looking after Citi’s Cloud programme across Public and Private Cloud. It has several new and exciting programmes utilising cutting edge cloud and container technologies, with a view to ensuring that our offerings are best in class and enable our wider business lines and clients alike.

The job:
This role sits within the newly formed GenAI Security team, which is responsible for ensuring, maintaining, and improving the security of our GenAi Prompt security capabilities within the firm. You will be responsible for engineering solutions that strengthen and broaden our security capabilities in an environment that is changing daily whilst also working with vendor products to achieve the same aims. You will have the opportunity to partner with key Engineering teams, alongside Operations and Site Reliability Engineering.
Effective capabilities that combine security and engineering excellence are key to success.

What the role covers:

• Designing, developing, optimizing, and enhancing a GenAI prompt security platform to protect firm AI/LLM-based applications from adversarial attacks and prompt injections.
• Building and automating a security testing framework to validate protection mechanisms for various LLM use cases.
• Owning solutions that are expected to operate and perform at scale across the organisation.
• Collaboration with multiple stakeholders and partners across Engineering and Operations as well as partner teams within the wider Citi organisation, across different time zones.

Job Skills/ Qualifications:

• Highly motivated self-starter with excellent interpersonal and problem-solving skills
• Bachelor’s degree or equivalent work experience
• Good oral and written communication skills
• Significant relevant industry work experience
• Experience of the full lifecycle of design, implementation and running of enterprise software solutions involving cross functional team collaboration
• Expertise in a major programming language such as Python and/or Go, and associated tooling (Git, Maven, IDEs, Jenkins, Bitbucket etc)
• Expertise in designing and implementing secure APIs and libraries.
• Experience in Generative AI, LLM frameworks, LLM prompt engineering and/or adversarial testing is a bonus.
• Experience with Cyber engineering and Operations, which could include DevSecOps or MLSecOps.
• Experience contributing to the architecture and design (architecture, design patterns, reliability, scaling) of new and current systems
• Experience in containerized deployment (Kubernetes, OpenShift etc).
• Expertise with DevOps, CI/CD and agile methodology

What we can offer you:

By joining Citi, you will not only be part of a business casual workplace with a hybrid working model (up to 2 days working at home per week), but also receive a competitive base salary (which is annually reviewed), and enjoy a whole host of additional benefits such as:

• 27 days annual leave (plus bank holidays)
• A discretional annual performance related bonus
• Private Medical Care & Life Insurance
• Employee Assistance Program
• Pension Plan
• Paid Parental Leave
• Special discounts for employees, family, and friends
• Access to an array of learning and development resources

Visit ourGlobal Benefitspage to learn more.
Alongside these benefits Citi is committed to ensuring our workplace is where everyone feels comfortable coming to work as their whole self, every day. We want the best talent around the world to be energized to join us, motivated to stay and empowered to thrive.

Job Family Group:
Technology ------------------------------------------------------
Job Family:
Systems & Engineering ------------------------------------------------------
Time Type:

Most Relevant Skills
Please see the requirements listed above.------------------------------------------------------
Other Relevant Skills
For complementary skills, please see above and/or contact the recruiter.------------------------------------------------------
Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi .

View Citi’s EEO Policy Statement and the Know Your Rights poster.

Discover your future at Citi
Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you’ll have the opportunity to grow your career, give back to your community and make a real impact.

Job Overview
About the Opportunity
Are you a seasoned technologist with a passion for building cutting-edge enterprise products and a hands-on approach to engineering? Join Citi’s Cloud Technology Services (CTS) team and be part of our commitment to transform Citi’s technology by leveraging game-changing cloud capabilities to drive agility, efficiency, and innovation.
We’re providing our businesses with a competitive edge by leveraging the scale of the public cloud and enabling new infrastructure economics. As the Forward Deployed Engineer, you will play a pivotal role in shaping and executing our public cloud strategy.
You will be part of a team that continues to deliver big! From building a cloud-based High-Performance Compute (HPC) platform to run huge risk calculations, enabling Citi to leverage GenAI at scale, all the way to enabling payments solutions, this team is at the forefront of innovation.

What You’ll Do:

• Technical Expertise: Provide hands-on technical contribution within a product team that focuses on public cloud container fleet management services, supporting Citi’s secure and enterprise-scale adoption of the public cloud.
• Collaborative Development: Contribute to a team of cloud engineers and full-stack software developers, building and deploying solutions that advance the public cloud strategy.
• Automation: Identify and develop automation initiatives to improve processes related to public cloud service consumption, enhancing client satisfaction and delivering business value.
• Cross-Functional Partnership: Collaborate with teams across Citi’s technology landscape to ensure alignment between public cloud initiatives and broader business goals.
• Engineering Excellence: Contribute to defining and measuring success criteria for service availability and reliability within the specific product domain.

Who You Are:

You are a talented developer with a proven track record of hands-on enterprise grade application development, expertise in public cloud, and a passion for engineering best practices. You have:

• Development Expertise: Experienced in full-stack software development with a focus on AWS and GCP. Demonstrates hands-on software development and engineering expertise. Key areas of proficiency include:

  • Programming Languages: Python, Java and Go.
  • AI/ML: prompt engineering, LLMs, RAG, Semantic Search, Vector Databases, etc
  • Behaviour-Driven Development (BDD) Testing: Cucumber, JBehave, Pytest-BDD, etc.
  • CI/CD pipelines: Harness, Tekton, Jenkins, etc.
  • Knowledge on middleware & distributed messaging (Kafka)
  • Databases (MongoDB and SQL)
  • Familiarity with Domain Driven Design and Event Driven Architecture

• Agile and DevOps Mindset: Familiarity with Agile Development, DevOps, and SRE practices.

• Adaptability: A demonstrated ability to quickly learn new technologies and adapt to changing project requirements.

• Strategic Thinking: Experience evaluating complex requirements and rationalizing them into a consistent service offering.

• Excellent Communication: The ability to effectively communicate technical concepts to both technical and non-technical audiences.

• Exceptional Teamwork and Collaboration: A proven ability to contribute effectively within a cross-functional team environment.

What we can offer you:
By joining Citi, you will not only be part of a business casual workplace with a hybrid working model (up to 2 days working at home per week), but also receive a competitive base salary (which is annually reviewed), and enjoy a whole host of additional benefits such as:

• 27 days annual leave (plus bank holidays)
• A discretional annual performance related bonus
• Private Medical Care & Life Insurance
• Employee Assistance Program
• Pension Plan
• Paid Parental Leave
• Special discounts for employees, family, and friends
• Access to an array of learning and development resources

Visit ourGlobal Benefitspage to learn more.
Alongside these benefits Citi is committed to ensuring our workplace is where everyone feels comfortable coming to work as their whole self, every day. We want the best talent around the world to be energized to join us, motivated to stay and empowered to thrive.

Job Family Group:
Technology ------------------------------------------------------
Job Family:
Systems & Engineering ------------------------------------------------------
Time Type:
Full time ------------------------------------------------------
Most Relevant Skills
Please see the requirements listed above.------------------------------------------------------
Other Relevant Skills
For complementary skills, please see above and/or contact the recruiter.------------------------------------------------------
Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi .

View Citi’s EEO Policy Statement and the Know Your Rights poster.

Python linux Development/Support (C++ SQL) - Trading ETF Marker Making Investment Bank The role consists of supporting, maintaining and developing the trading environment used by the desk. In close relationship with traders, the IT strategist will have to use a broad range of technical skills to support day to day production, maintain and enhance the current python core architecture (in house libraries, scheduler and caching system) but also to develop and implement efficient monitoring and analysis tools. Role Details Support (~30%) - Assist traders with L1/L2 support - Ensure trading systems are up and running at all times - Develop tools that help ensure systems are reliable and efficient - Rationalize and enhance the platform reliability - Support the new pricing setup + the low latency platform Development (~70%) - Maintain and enhance existing support, monitoring and analysis tools - Work with traders/research on the requirements of new features/applications - Work on new projects to enhance the business (cover algo, ETF pricer setup) Requirements - Strong knowledge of Linux (including development/debugging, scripting, and networking) - Strong knowledge and experience of core Python development - Knowledge of C++ code (at least as a reader) - Knowledge of SQL (Oracle) Desired Skills - Experience in working under pressure of a production environment - Troubleshooting / Analytical skills - Problem solving skills Rate £500 - £700 per day Inside IR35 ; Partly Remote Adlam Consulting operates as an Employment Agency & an Employment Business Applicants must be eligible to work in the specified location

ABOUT US:

LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a dedication to excellence in delivering the services our customers expect from us. With extensive experience, deep knowledge and worldwide presence across financial markets, we enable businesses and economies around the world to fund innovation, manage risk and create jobs. It’s how we’ve contributed to supporting the financial stability and growth of communities and economies globally for more than 300 years. Through a comprehensive suite of trusted financial market infrastructure services - and our open-access model - we provide the flexibility, stability and trust that enable our customers to pursue their ambitions with confidence and clarity.

LSEG is headquartered in the United Kingdom, with significant operations in 70 countries across EMEA, North America, Latin America and Asia Pacific. We employ 25,000 people globally, more than half located in Asia Pacific. LSEG’s ticker symbol is LSEG.

OUR PEOPLE:

People are at the heart of what we do and drive the success of our business. Our culture of connecting, creating opportunity and delivering excellence shape how we think, how we do things and how we help our people fulfil their potential. We embrace diversity and actively seek to attract individuals with unique backgrounds and perspectives. We break down barriers and encourage teamwork, enabling innovation and rapid development of solutions that make a difference. Our workplace generates an enriching and rewarding experience for our people and customers alike. Our vision is to build an inclusive culture in which everyone feels encouraged to fulfil their potential.

We know that real personal growth cannot be achieved by simply climbing a career ladder - which is why we encourage and enable a wealth of avenues and interesting opportunities for everyone to broaden and deepen their skills and expertise. As a global organisation spanning 70 countries and one rooted in a culture of growth, opportunity, diversity and innovation, LSEG is a place where everyone can grow, develop and fulfil your potential with meaningful careers.

ROLE PROFILE:

We’re looking for an experienced DevOps Engineer to support TRADEcho, our MiFID II reporting services, hosted on AWS and operated by the London Stock Exchange Group.

The team provides cover (onsite in Sri Lanka) from 2AM through to 6PM (UK Time) Monday to Friday with the late shift being performed by on call. There is occasional weekend work required as Saturdays are used to test and roll forward software releases.

WHAT YOU’LL BE DOING:

• Act as operational SME for the product while also gaining a solid understanding of the underlying infrastructure and operations toolset
• Act as the operational SME for the product, developing strong understanding of its infrastructure and tooling while partnering closely with business and technology teams.
• Ensure full compliance with departmental processes, reducing incidents and risks through proactive analysis, accurate impact assessment, and support for development changes.
• Identify and manage operational risks, mitigate short-term while driving long-term, sustainable resolutions.
• Lead DevOps engineering within a cross-functional development pod, ensuring the platform is resilient, scalable, secure, and fully automated.
• Own CI/CD pipelines and deployment automation, applying modern DevOps and GitOps practices to improve reliability and delivery speed.
• Build and automate infrastructure provisioning using Terraform and configuration management tools, driving an automation-first culture and run the platform.
• Mentor and provide technical guidance to DevOps engineers.

WHAT YOU’LL BRING:

• Demonstrated AWS and Kubernetes expertise.
• Hands-on experience with Terraform, CI/CD tools (Git, Jenkins, Ansible), and scripting (Bash/Python).
• Ability to compose solutions for complex systems and guide teams on deployment best practices.
• Excellent communication and problem-solving skills.

Preferred Skills & Experience:

• Experience with modern tooling (DataDog, GitLab, ServiceNow), networking diagnostics, and Agile practices.
• AWS certifications and financial services background.

Join us and be part of a team that values innovation, quality, and continuous improvement. If you’re ready to take your career to the next level and make a significant impact, we’d love to hear from you!

Career Stage:
Senior Associate

London Stock Exchange Group (LSEG) Information:

Join us and be part of a team that values innovation, quality, and continuous improvement. If you’re ready to take your career to the next level and make a significant impact, we’d love to hear from you.

LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.

Our purpose is the foundation on which our culture is built. Our values of Integrity, Partnership, Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions.

Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce.

We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone’s race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants’ and employees’ religious practices and beliefs, as well as mental health or physical disability needs.

You will be part of a collaborative and creative culture where we encourage new ideas. We are committed to sustainability across our global business and we are proud to partner with our customers to help them meet their sustainability objectives. Our charity, the LSEG Foundation provides charitable grants to community groups that help people access economic opportunities and build a secure future with financial independence. Colleagues can get involved through fundraising and volunteering.

LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.

Please take a moment to read this privacy notice carefully, as it describes what personal information London Stock Exchange Group (LSEG) (we) may hold about you, what it’s used for, and how it’s obtained, your rights and how to contact us as a data subject .

If you are submitting as a Recruitment Agency Partner, it is essential and your responsibility to ensure that candidates applying to LSEG are aware of this privacy notice.

About Us

Wellington Management offers comprehensive investment management capabilities that span nearly all segments of the global capital markets. Our investment solutions, tailored to the unique return and risk objectives of institutional clients in more than 60 countries, draw on a robust body of proprietary research and a collaborative culture that encourages independent thought and healthy debate. As a private partnership, we believe our ownership structure fosters a long-term view that aligns our perspectives with those of our clients.

About the Role

THE POSITION

Wellington Management is seeking a Senior Directory, M365 & Server Administrator to support and operate the firm’s core identity, collaboration, and Windows infrastructure platforms, including Active Directory, Microsoft 365, Windows Server, and VMware.

This is a domain admin level role designed to provide deep technical support and operational continuity for these critical services outside of US business hours, while remaining fully embedded with US based engineering and operations teams.

The role will be based in London to ensure meaningful daily overlap with US teams and to enable close collaboration, shared ownership, and consistent engineering standards-rather than operating as a detached regional support function.

THE OPPORTUNITY

This role exists to strengthen the resilience, stability, and responsiveness of Wellington’s core identity and infrastructure platforms.

You will work closely with senior engineers and architects across two closely aligned domains:

• Active Directory, Windows Server, and VMware

• Microsoft 365 operations, engineering, and architecture

Rather than being siloed, this role is intended to be deeply embedded in these teams-sharing responsibility for operational health, incident response, and continuous improvement of platforms that are critical to the firm.

This is an excellent opportunity for a senior engineer who enjoys hands on technical ownership, complex troubleshooting, and working across identity, server, virtualization, and cloud collaboration technologies.

RESPONSIBILITIES

Core Platform Operations & Engineering

• Provide senior level operational support for:

• Active Directory (on prem and hybrid)

• Windows Server platforms

• VMware virtualization environments

• Microsoft 365 (identity, collaboration, and core services)

• Operate with domain administrator level access and responsibility, following established security and change controls.

• Ensure the stability, availability, and performance of core directory and server services during non US hours.

Active Directory & Identity

• Support and maintain Active Directory forests, domains, trusts, and replication.

• Troubleshoot complex AD issues including authentication failures, GPO processing, DNS dependencies, and hybrid identity scenarios.

• Support identity integrations with Microsoft Entra ID and downstream systems.

Microsoft 365

• Provide operational support for Microsoft 365 services, including identity related components and tenant configuration.

• Partner with M365 engineering and architecture teams to support changes, deployments, and incident response.

• Assist with troubleshooting cross platform issues spanning on prem AD, Entra ID, and M365 services.

Windows Server & VMware

• Support Windows Server operating systems and associated services.

• Assist with VMware platform operations, troubleshooting VM level and host level issues as required.

• Work closely with platform owners to maintain consistent standards and operational hygiene.

Incident Response & Problem Management

• Act as a senior escalation point during non US hours for incidents affecting directory, server, virtualization, or M365 platforms.

• Perform deep technical troubleshooting and root cause analysis.

• Contribute to post incident reviews and drive corrective and preventative actions.

Collaboration & Embedded Team Model

• Work closely with US based engineers to ensure seamless handover, shared context, and consistent decision making.

• Participate in team rituals, operational reviews, and engineering discussions to remain aligned and embedded.

• Contribute to shared documentation, runbooks, and operational standards.

Continuous Improvement

• Identify recurring issues, operational gaps, or manual processes and propose improvements.

• Support automation, standardization, and modernization efforts across AD, server, and M365 platforms.

• Maintain accurate documentation for configurations, procedures, and operational knowledge.

QUALIFICATIONS

• Strong hands on experience administering Active Directory in a complex enterprise environment.

• Solid experience with Windows Server platforms.

• Working experience supporting VMware environments.

• Experience operating and supporting Microsoft 365 in an enterprise context.

• Proven ability to troubleshoot complex, cross platform issues involving identity, servers, virtualization, and cloud services.

• Comfortable operating with elevated privileges (domain admin level) in a controlled, audited environment.

• Strong communication skills and ability to work closely with geographically distributed teams.

Preferred

• Experience supporting hybrid identity environments (AD + Entra ID).

• Exposure to enterprise scale M365 engineering or operations.

• Experience working in regulated or security sensitive environments.

• Scripting or automation experience (PowerShell preferred).

Not sure you meet 100% of our qualifications? That’s ok. If you believe that you could excel in this role, we encourage you to apply and welcome a chance to review your background. We are dedicated to building and maintaining a diversified workforce and considering a broad array of candidates with a variety of skill, workplace experiences, and backgrounds.

As an equal opportunity employer, Wellington Management ensures that all qualified applicants will receive equal consideration for employment without regard to race, color, sex, sexual orientation, gender identity, gender expression, religion, creed, national origin, age, ancestry, disability (physical or mental), medical condition, citizenship, marital status, pregnancy, veteran or military status, genetic information or any other characteristic protected by applicable law . If you are a candidate with a disability, or are assisting a candidate with a disability, and require an accommodation to apply for one of our jobs, please email us at GMWTalentOperations@wellington.com .

We believe that in person interactions inspire and energize our community and are essential to our culture. In support of this commitment, our employees work from our offices 4 days a week with flexibility to work remotely 1 day a week. We believe that this approach ultimately supports our mission to deliver investment excellence to our clients and their beneficiaries over the long term.

£Up To £75,000 GBP

Performance Bonus

Hybrid WORKING

Location: UK Wide , Central London, Greater London - United Kingdom Type: Permanent

Senior Cyber Operations Analyst (Associate Manager)

Locations: London | Manchester | Bristol

Salary: Up to 75,000 + excellent package

Clearance: BPSS + SC clearance (or Eligible)

Are you an experienced Cyber Security Operations specialist looking to step into a senior role within a high-growth, high-impact cyber practice?

We’re supporting a top-tier consulting organisation (name anonymised) that is expanding its Blue Team and looking for a technical, curious and detail-driven Senior Cyber Operations Analyst to join their team.

This is a fantastic opportunity to work with cutting-edge tooling, contribute to threat-driven defensive security, and shape advanced SecOps capabilities across enterprise environments.

About the Role

As a Senior Cyber Operations Analyst at Associate Manager level, you’ll sit at the heart of a thriving Cyber Practice covering Assurance, Compliance, SecOps, Offensive Security and Research.

You’ll play a pivotal part in threat detection, incident response, detection engineering, and security monitoring - helping defend major UK organisations.

This role is perfect for someone who thrives in technical depth, enjoys problem-solving, and wants to contribute to a mission-driven cyber defence team.

Key Responsibilities

You will:

• Develop, maintain and enhance detection content (primarily for Splunk SIEM) across cloud, endpoint and network platforms
• Identify detection gaps, log ingestion issues and alert improvements
• Review and uplift existing SecOps standards, logging maturity, BAU monitoring and threat-led optimisation
• Perform day-to-day security monitoring, alert triage and incident response (9am-5:30pm rota)
• Investigate cyber security incidents and provide technical leadership during escalations
• Mentor junior analysts through shadowing and hands-on guidance
• Act as a technical SME during client engagements, including presenting to senior stakeholders
• Participate in alert testing, IR tabletop exercises, and readiness assessments
• Stay up to date with emerging intelligence, attacker behaviours and evolving threat landscapes

Additional (client-dependent) responsibilities may include:

• Proactive threat hunting
• Incident response playbook development
• Threat intelligence research
• Vulnerability scanning & reporting
• Internal (consultancy) and external (client-side) leadership opportunity

On-call requirement: approx. 1 week per month for high-priority incidents (additional compensation provided).

What We’re Looking For

Not every box needs to be ticked - but strong candidates will bring experience across areas such as:

• Threat intelligence models (Pyramid of Pain, IPCE, TI lifecycle)
• Detection engineering & alert development
• Scripting skills (Python, Bash, C/C++, Java)
• Core cybersecurity fundamentals: network, cloud, cryptography, forensics
• Understanding of attacker techniques, APT behaviours and network protocol abuse
• Familiarity with Windows/Linux investigation techniques

What’s in It for You

You’ll join an organisation that invests heavily in its people and offers:

• Competitive salary
• Private medical insurance
• 25 days annual leave
• 3 days paid charity leave
• Continuous learning & development opportunities
• Access to a cutting-edge cyber practice and diverse project portfolio
• Flexible working & mobility across multiple UK hubs

Security Clearance Requirement

This role requires eligibility for BPSS + SC clearance, which normally includes:

• 5 years continuous UK residency
• No periods of 30+ consecutive days outside the UK in that time
• British-only nationality (no dual citizenship) due to client conditions

Interested?

If you’re passionate about defensive security, thrive in technical SecOps work and want to make a measurable impact across major UK clients, we’d love to hear from you.

Apply directly or message me for a confidential chat.

Director - Performance Engineering

As a Director, Performance Engineering, you will lead the charge in protecting and elevating the world’s most established low-latency, high-throughput market data and news distribution system for LSEG. Each day, our platform ingests 120 billion messages and distributes them globally at rates exceeding 2 trillion messages, serving the most demanding participants in the global financial ecosystem. This role is pivotal in ensuring the platform remains ultra-reliable, predictable at scale, and continuously optimized-across both on-prem and private cloud (EKS) environments.

You will build and lead a world-class Performance Engineering function responsible for the performance, capacity, scalability, efficiency, and resiliency of real-time services. Your team will partner closely with SRE, RT Platform Tools & Automation, Architecture, Product Engineering squads, and Ops Excellence to ensure our RT workloads consistently meet stringent latency, throughput, jitter, and concurrency expectations under all conditions.

WHAT YOU WILL OWN

Performance Engineering Leadership

• Build and lead the Performance Engineering team for one of the world’s highest-scale, lowest-latency market data systems.
• Own performance engineering strategy, roadmaps, and capability development across global engineering teams.
• Define and evolve performance engineering methodologies, tooling, standards, and golden paths across RT Engineering.

Performance Testing & Advanced Diagnostics

• Lead the creation and continuous improvement of performance, load, stress, soak, and chaos testing frameworks embedded into CI/CD.
• Oversee deep-dive analysis of system performance across the entire stack: application code, middleware, OS, networking, storage, hardware, and cloud infrastructure.
• Develop and enforce methodologies for identifying bottlenecks, inefficiencies, and performance regressions before they reach production.

Performance Baselines & NFR Validation

• Establish and maintain baseline performance signatures for all RT workloads, ensuring consistent detection of early performance degradation.
• Validate services and platforms against NFRs (latency, throughput, concurrency, resource usage, jitter) in collaboration with Architecture and SRE.
• Ensure reliability, performance, and release readiness through robust performance evidence and go/no-go criteria.

Capacity & Scalability Engineering

• Work with SRE to drive capacity forecasting, headroom analysis, and saturation modelling for both on-prem and cloud workloads.
• Ensure RT systems scale predictably using best-in-class autoscaling patterns, resource tuning, and workload-aware optimization.
• Collaborate with RT Platform Tools & Automation to embed performance guardrails, IaC patterns, and autoscaling strategies at the platform level.

Incident & Risk Management

• Partner with SRE on performance-related incident reviews, ensuring deep root cause analysis and long-term remediation.
• Collaborate with Ops Excellence team to ensure performance-related risks are identified, governed, and visibly reported.
• Drive continual improvement initiatives that reduce recurrence of performance and capacity degradation.

Cross-Functional Partnering

• Partner with Architecture to embed performance considerations into service design, reference architectures, and platform evolution.
• Work closely with Tech Biz Mgmt to align performance engineering insights with cost efficiency, supplier performance, and investment decisions.
• Collaborate with Product Engineering squads to ensure code-level performance optimization and NFR compliance.

WHAT YOU’LL BRING

Leadership & Influence

• Proven leadership in building global engineering functions or performance engineering organizations.
• Ability to operate at executive level, articulate complex technical concepts clearly, and influence senior stakeholders.
• High emotional intelligence, with the ability to navigate organizational complexity and influence outcomes across multiple groups.

Technical Depth & Domain Expertise

• 15+ years of experience in high-scale, real-time engineering environments (preferably financial services, exchanges, trading, or market data).
• Expertise in C++, modern distributed systems, multithreading, concurrency, real-time messaging, caching, and lock-free programming.
• Solid base in operating system internals, kernel tuning, networking stacks, and low-latency optimization.
• Deep experience in performance tuning, profiling, instrumentation, and debugging across heterogeneous environments.
• Experience with non-functional testing, performance automation, and quality engineering practices.
• Strong understanding of queueing theory, back-pressure, GC performance, and high-throughput system behavior.
• Experience with performance engineering for containers, Kubernetes/EKS, and hybrid cloud environments.
• Solid background in database optimization, high-performance storage, and event-driven architectures.

Execution & Delivery

• Proven track record leading large-scale technology transformation programs in financial markets.
• Experience working in agile engineering organizations, scaling performance engineering capabilities across distributed teams.
• Ability to quickly analyze sophisticated performance issues and drive structured, data-driven resolution.

Career Stage:
Director

London Stock Exchange Group (LSEG) Information:

Join us and be part of a team that values innovation, quality, and continuous improvement. If you’re ready to take your career to the next level and make a significant impact, we’d love to hear from you.

LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.

Our purpose is the foundation on which our culture is built. Our values of Integrity, Partnership, Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions.

Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce.

We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone’s race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants’ and employees’ religious practices and beliefs, as well as mental health or physical disability needs.

You will be part of a collaborative and creative culture where we encourage new ideas. We are committed to sustainability across our global business and we are proud to partner with our customers to help them meet their sustainability objectives. Our charity, the LSEG Foundation provides charitable grants to community groups that help people access economic opportunities and build a secure future with financial independence. Colleagues can get involved through fundraising and volunteering.

LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.

Please take a moment to read this privacy notice carefully, as it describes what personal information London Stock Exchange Group (LSEG) (we) may hold about you, what it’s used for, and how it’s obtained, your rights and how to contact us as a data subject .

If you are submitting as a Recruitment Agency Partner, it is essential and your responsibility to ensure that candidates applying to LSEG are aware of this privacy notice.

Senior Backend Engineer The Senior Software Engineer will join a high-performing backend engineering team responsible for building and scaling modern, cloud-native platforms that power customer-centric financial products. You’ll play a key role in designing and delivering resilient, secure, and high-performance systems, working within collaborative squads focused on solving real-world problems at scale. This role sits within an innovative, fast-growing environment that blends the agility of a startup with the backing and stability of a global financial institution. You’ll be instrumental in shaping architecture, influencing engineering standards, and mentoring engineers while delivering impactful solutions. Company Highlights: 1. Backed by a globally established financial institution with significant investment in digital innovation 2. Startup-like environment with a strong engineering-first culture sitting on top of an established user base (circa 70M+ Users) 3. Customer-centric mission focused on building modern financial products from the ground up 4. Highly collaborative structure with cross-functional squads and real ownership 5. Strong emphasis on diversity, inclusion, and continuous learning 6. Cutting Edge Technology - Java 25 and Kotlin, cloud-native infrastructure as well as unlimited Claude 4.6 usage Role Overview: Opportunity to be a founding engineer as part of a Greenfield build out of a Fintech, backed by a major Investment Bank. You will have autonomy and ownership of the platform with the scope of influencing architectural decisions and seeing it through to production. Key Responsibilities: 1. Design and build scalable, high-quality backend systems using modern engineering practices 2. Apply domain-driven design principles to create robust and adaptable services 3. Ensure systems are resilient, fault-tolerant, and free from single points of failure 4. Develop secure, production-ready code with a focus on performance and reliability 5. Own the full lifecycle: from design and development to deployment and optimisation 6. Troubleshoot production issues and implement long-term fixes to prevent recurrence 7. Enable seamless, zero-downtime deployments for critical services 8. Optimize data access patterns and storage solutions for performance and scalability 9. Continuously improve system observability, monitoring, and operational excellence 10. Mentor engineers and contribute to a strong engineering culture Tech Stack: 1. Strong experience with JVM-based languages (Java and/or Kotlin) 2. Experience building microservices and distributed systems at scale 3. Cloud-native development (AWS, GCP, or Azure) 4. Containerization and orchestration (Docker, Kubernetes) 5. CI/CD pipelines and modern DevOps practices 6. Experience with event-driven architecture and messaging systems (e.g. Kafka) 7. Strong understanding of APIs, RESTful services, and system design 8. Database experience (SQL and/or NoSQL) 9. Familiarity with observability tools and monitoring frameworks Ideal Candidate Profile: 1. Strong problem-solving mindset with the ability to take ownership of complex challenges 2. Passion for clean code, maintainability, and long-term system design 3. Collaborative approach with a focus on knowledge sharing and team success 4. Adaptable and comfortable working in fast-paced, evolving environments 5. High standards for engineering quality and ethical decision-making 6. Commercial awareness and interest in fintech or digital banking