Security Engineer Jobs

Network and Infrastructure Engineer Up to £50,000 per annum Bromley, Kent Full-Time Permanent About the Role We’re looking for a driven and collaborative Network & Infrastructure Security Engineer to join our agile infrastructure team. In this hands-on position, you’ll take the lead on network engineering while also contributing to broader infrastructure operations—so a strong foundation in both areas is essential. You’ll be instrumental in maintaining and enhancing a secure, resilient, and high-performing IT environment. This role is ideal for someone who enjoys working across disciplines, thrives in a team-oriented setting, and is passionate about delivering robust and secure technology solutions. Key Responsibilities \* Manage and optimise network infrastructure, including virtual networks, cloud platforms, and WAN technologies. \* Configure and maintain firewalls, routers, switches, and load balancers. \* Deploy security and operational updates in line with business guidelines. \* Monitor network performance and resolve bottlenecks. \* Support backup and disaster recovery solutions. \* Familiarity with Microsoft Azure cloud services and architecture \* Dell Servers, including iDrac \* Knowledge of SAN’s operations Essential Skills & Experience \* Strong knowledge of networking protocols (TCP/IP), subnetting, VLANs, VPNs, and load balancing. \* Experience with FortiNet firewalls and Cisco switches (including CLI configuration and firmware updates). \* Proficiency in Windows operating systems and active directory. \* Demonstrated ability to design / troubleshoot complex network. \* Experience working with hybrid infrastructure and virtual networks. \* Ability to work collaboratively across infrastructure and security teams. \* Willingness to work outside of core hours when required. What We’re Looking For We value team players who bring fresh ideas, enthusiasm, and a collaborative spirit. If you’re passionate about network security and infrastructure, and want to make a meaningful impact in a close-knit team, we’d love to hear from you. About us Foresters Financial is not your typical financial services provider. Those who join our purpose-driven organisation enjoy a culture of collaboration, creativity, and mutual respect and are challenged to do their best to make a difference every day. We help everyday families achieve their financial goals and make a lasting difference in their lives and communities. What we do We help everyday families achieve their financial goals and make a lasting difference in their lives and communities. We will continue to do this by employing enthusiastic and talented Financial Advisers working across the country and equally talented people to be based at our Head Office in Bromley

Senior DevOps Engineer - London Stock Exchange Group

London Stock Exchange Group

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 SUMMARY:

As the sole DevOps Engineer you will support teams of software and QA engineers in deploying, testing and developing applications, and ensure global availability of our applications and services.

They develop and apply a set of standards-based DevOps patterns, continually improving LSEG’s DevOps capabilities.

WHAT YOU’LL BE DOING:

Developing and maintaining software applications infrastructures, focusing on scalability, reliability, automation, and performance.
Developing, implementing, and maintaining DevOps practices, including continuous integration, deployment, and automated testing.
Collaborating with multi-functional teams to define software system requirements.
Managing software configuration, deployment, and release processes.
Monitoring and optimising cloud costs.
Monitoring and maintain applications security profile.

WHAT YOU’LL BRING:

Professional experience in DevOps practices and Cloud, especially Azure or AWS Cloud Technologies.
Proficiency with Version Control Tools and CI/CD Tools (Git, GitLab) and related concepts such as branching/versioning strategies etc.
Good knowledge of IaC and related technologies such as Terraform.
Hands-on experience in developing CI/CD workflows/pipelines and implementing security standards inside the CI/CD pipelines (SonarQube, Semgrep etc.).
Experience in Docker, containerisation and related orchestration frameworks such as Kubernetes.

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.

Network Engineer

Queen Square Recruitment Ltd

Network Engineer (Data Network Services) – Contract
Location: Leeds (Hybrid)
Rate: £375 – £450 per day inside IR35
Contract Length: 6 months
Start Date: ASAP
Working Pattern: Hybrid (some travel and occasional weekend support may be required)
Overview
Our client is seeking experienced Network Engineers to join their Network Service Data Team, providing day‑to‑day support for incidents and change requests across a large, enterprise‑scale environment.
This role is ideal for engineers who enjoy working across the full lifecycle of network services—from design and implementation through to live transition and operational support—while applying modern engineering principles to deliver secure, resilient and scalable infrastructure.
Key Responsibilities * Installation, configuration, and support of Production, Non‑Production, and Disaster Recovery network infrastructures * Support and resolution of incidents and delivery of network change requests * Design, documentation, and implementation of network infrastructure across development, testing, and live environments * Apply modern engineering practices including: * Software Defined Networking (SDN) * Automation and orchestration * Infrastructure as Code (IaC) * Advanced observability and monitoring * Ensure secure, reliable, and highly available network services in an enterprise environment
Key Skills & Experience * Strong experience designing, implementing, and supporting LAN and WAN networks * Solid understanding of IP networking * Knowledge of core routing and switching protocols (OSPF, BGP, Spanning Tree) to CCNA level or equivalent * Proven experience securing internet‑facing services * DNS and DHCP experience across Windows, Unix, and internet environments * Understanding of vulnerability assessment and penetration testing * Excellent troubleshooting, fault diagnosis, and resolution skills
Desirable Technical Experience * Security and firewall technologies, including Cisco FTD and Check Point * F5 Application Delivery Controllers * Cisco Wireless and Cisco Secure Access * Cisco ACI and Cisco Hybrid ZTNA * Scripting, automation, and Infrastructure as Code
If you have the required skills & experience, please apply promptly to be considered

OT Cyber Security Engineer

Cyber Security OT Engineer Suffolk (1-2 days per week on-site) Overview We’re looking for an experienced Cyber Security OT Engineer to support and secure critical operational technology environments. You’ll work across infrastructure, networks, and security tooling to ensure resilience, compliance, and protection against cyber threats in a regulated environment. Key Responsibilities Support and maintain OT security infrastructure (firewalls, SIEM, PAM, IDS, endpoint security)
Monitor, troubleshoot, and resolve security incidents and problems
Implement changes in line with strict change control processes
Support OT security projects and continuous improvement initiatives
Assist with cyber incident response and recovery activities
Work with internal teams, vendors, and stakeholders to enhance security posture
Contribute to security testing, risk mitigation, and compliance (e.g. NIS regulations)
Provide input into network security design across WAN/LAN and OT environmentsExperience Required ~5+ years in Cyber Security or Networking (ideally within OT / industrial environments)
Strong knowledge of network security, firewalls, VPNs, and routing
Experience with SIEM, monitoring, and incident response
Understanding of OT/SCADA environments and industrial protocols is beneficial
Familiarity with security frameworks (e.g. NCSC, ISO27001, IEC 62443)
Experience with tools such as Fortinet, Cisco ISE, or similar
Knowledge of Windows/Linux security and virtualised environments
Scripting (PowerShell/Python) desirableAdditional Info Must be eligible for UK security clearance (SC)
Strong stakeholder communication skills requiredIf interested, please APPLY and a consultant will be in touch asap. GCS is acting as an Employment Agency in relation to this vacancy

Synapri are working with a London-based technology driven organisation looking to hire a Security Engineer to support security operations, governance, and compliance across a modern cloud environment.

Responsibilities:

Monitor and respond to security alerts, incidents, and threats
Manage Microsoft 365 security tools (Defender, Purview, Sentinel, Entra ID)
Support ISO 27001 compliance and broader security frameworks
Assist with third-party risk assessments and penetration testing
Contribute to security policies, controls, and incident response
Promote security awareness across the business

Experience:

5+ years in cybersecurity or security operations
Strong experience with Microsoft security stack (Defender, Sentinel, Entra ID, Intune)
Good knowledge of cloud security and frameworks (ISO 27001, NIST)
Strong communication and problem-solving skills

This role is a hybrid position in Central London. Please apply with your latest CV for consideration.

Embedded Software Engineer - Security Clearance - Cambridge

Embedded Software Engineer - Security Clearance - Cambridge A growing spinout security technology company, based in Cambridge, is currently seeking an experienced Embedded Software Engineer to assist with the development, modification, and enhancement of various security technologies. Your focus will span across radio, satellite, communications, radar, sensors, and other complex technologies used in the defence, aerospace, telecommunications, and other cutting-edge sectors, where you will contribute to the development of new technologies. You will collaborate with a team of experts, including electronics design engineers, software engineers, mechanical engineers, physicists, and other specialists. You won't necessarily need prior experience in the specific sector, as this is trainable, but you should have substantial experience in developing embedded systems using C/C++ programming languages. This company provides bespoke products and services for clients, ensuring that your projects will always be unique, presenting their own set of problems and challenges to keep you engaged. In addition to client projects, you will be involved in developing new versions of existing technology and improving current versions, offering a diverse and engaging role that will keep you interested for the long term. While experience in telecommunications, aerospace, scientific, radar, radio, or other complex technologies that involve communication between devices would be ideal, it is not essential. Your experience as an Embedded Software Engineer is more crucial than the specific sector. Certain roles may require security clearance, typically necessitating a British passport with no criminal record or a history of residing in the UK and paying taxes for several years (also with no criminal record). This role has arisen due to the company's growth. They take pride in investing in their staff by providing continuous training to support your career development. They have received awards for their commitment to staff development. In addition to award-winning training, career growth, and varied and unique work, you will receive a competitive starting salary, bonuses, pension contributions, medical insurance, life assurance, free parking, and other excellent benefits. There are currently several openings for Embedded Software Engineers within the company, so they will consider candidates with different levels of experience, from those early in their careers to senior candidates with years of experience. Salary will be determined based on experience, and there may be new roles approved in the future. If you are interested, we recommend submitting your application now to avoid missing out. For further information, please do not hesitate to call Andrew Welsh, Director of Medical Devices Recruitment and Scientific Recruitment Specialist at Newton Colmore, on (phone number removed), or submit an application, and a member of our Newton Colmore team will contact you. Newton Colmore Consulting is a specialist recruitment company within the Medical Devices, Scientific Engineering, Scientific Software, Robotics, Science, Electronics Design, New Product Design, Human Factors, Regulatory Affairs, Quality Assurance, and Field Service Engineering sectors

Senior IT Support / Security

Senior IT Support Engineer (Cybersecurity focus) required to support, manage, and enhance my clients IT infrastructure while maintaining a strong cybersecurity posture. The role combines hands-on systems engineering with leadership in security, compliance, and technical projects, working closely with stakeholders across the company.

Key Responsibilities

Lead the support, optimisation, and integration of enterprise IT systems.
Develop and deliver cybersecurity initiatives, including Cyber Essentials certification.
Manage security platforms such as identity management and endpoint protection tools.
Conduct vulnerability management, penetration testing, and incident response planning.
Drive technical projects from planning through to delivery and review.
Contribute to IT strategy, standards, documentation, and change control processes.
Support continuous improvement and adoption of best-practice frameworks (ITIL, Prince2).

Essential Skills & Experience

Proven experience in cybersecurity engineering.
Strong knowledge of enterprise and cloud platforms, particularly Microsoft 365 (Defender, Intune, IAM, Compliance).
Demonstrable project management experience ideally (eg Prince2).
Experience with compliance frameworks such as Cyber Essentials and audit processes.
ITIL qualification or experience working within the ITIL framework.
Excellent communication skills and ability to work collaboratively.

Application Architect

CBSbutler Holdings Limited trading as CBSbutler

Onsite in Bracknell
Eligible for DV clearance
65-70K per annum + benefits package

We are recruiting an Application Architect to support the ongoing evolution of a Gateway solution for a strategic UK defence customer. Working alongside senior solution leaders, you’ll contribute to secure design, controlled change, and operational resilience within a mission-critical environment. This is a development opportunity for an aspiring architect looking to build design authority and architectural experience in a high-assurance setting.

The Role

You will:

Contribute to infrastructure and Gateway design changes to maintain availability and performance
Produce structured design documentation alongside the customer and Programme Manager
Support architectural governance and ensure alignment to solution intent
Provide technical oversight during incident troubleshooting with SOC and 3rd Line teams
Assist in maintaining secure, resilient and scalable infrastructure components across Windows and Linux environments

Your technical experience;

Core Infrastructure

VMware / vSphere
RHEL & Windows Server
Microsoft Services
Active Directory, including Group Policy (GPO), DNS integration

Linux & Platform Engineering

Experience working within Red Hat Enterprise Linux environments
Ability to write scripts to automate operational or security processes
Familiarity with pattern matching techniques and regular expressions (Regex), particularly within security or antivirus tooling
Configuration and management of the standard RHEL firewall
Exposure to Linux-based security tooling and antivirus technologies

Networking & Gateway Technologies

Citrix NetScaler
Wireshark
Understanding of Gateway appliances and associated software
Knowledge of secure communications protocols, including messaging platforms such as XMPP

Storage & Data

NetApp SAN
NAS
Backup solutions

Security & Web

PKI management applications
Web applications and protocols
Experience supporting file validation, inspection, and content verification within secure transfer environments

If you are interested in discussing this Application Architect role further, please reply back with a copy of your updated CV.

Application Security Design Engineer

CBSbutler Holdings Limited trading as CBSbutler

Security Application Design Engineer

Onsite in Bracknell
Eligible for DV clearance
50-55K per annum + benefits package

Join a high-impact engineering team delivering a secure Gateway solution for a major UK defence customer. This is a hands-on Security Application Architect role where you’ll design, implement and troubleshoot mission-critical infrastructure in a live, security-sensitive environment. Working alongside senior architects and engineering leads, you’ll play a key role in maintaining availability, supporting operational teams, and driving technical change across complex systems.

What You’ll Be Doing

Identify and implement infrastructure and application changes to support Gateway functionality and availability
Produce detailed technical designs for change alongside the customer and Programme Manager
Work daily with the Solution Owner and Engineering Lead to deliver engineering outcomes
Provide technical support to SOC and 3rd Line teams, troubleshooting complex incidents
Configure and support Gateway appliances and associated software
Maintain high availability, resilience and security posture

Your Technical Background

You’ll bring strong hands-on experience across:

Infrastructure

VMware / vSphere
RHEL & Windows Server
Trellix
SIEM platforms

Linux & Scripting

Shell scripting
REGEX
Firewall configuration

Microsoft Stack

Active Directory
DNS
RDS

Applications & Protocols

LDAP
Email, Chat & File standards
Web & Chat protocols
XML & JSON schema
LDIF
TLS server/client certificates
File type digital formats

Gateways

Deployment, configuration and support of Gateway appliances and their software

What We’re Looking For

A self-starter comfortable working independently and collaboratively
Strong troubleshooting mindset
Clear written and verbal communication skills
Comfortable interacting with stakeholders at all levels
Willing and able to travel weekly within the South / Southwest at short notice

If you are interested in discussing this Application Security Design Engineer role further, please reply back with a copy of your updated CV.

Cyber Security Consultant

Cyber Security Consultant - Prisma Access

Location: UK (Remote / Hybrid)
Contract Length: 12 months
IR35 Status: Outside IR35

83zero are partnered with a global organisation delivering a large-scale secure network and cloud security transformation programme. As part of this, we are looking for an experienced Cyber Security Consultant with strong Prisma Access deployment experience to support the design, implementation, and optimisation of modern SASE solutions.

This is a senior, hands-on consulting role suited to someone who has delivered enterprise-scale Prisma Access deployments and is comfortable operating in complex environments.

The Role

You will take ownership of the technical delivery of Prisma Access and Palo Alto SASE solutions, working closely with architects, engineers, and key stakeholders.

Key Responsibilities

Lead the design and deployment of Prisma Access solutions
Deliver SASE and Zero Trust architectures aligned to best practice
Integrate Prisma Access with existing Palo Alto technologies (NGFW, Panorama)
Support migrations from legacy networks to cloud-delivered security models
Provide technical leadership, documentation, and knowledge transfer
Troubleshoot complex issues and optimise performance and security posture
Work closely with stakeholders to ensure successful project delivery

Required Experience & Skills

Proven hands-on Prisma Access deployment experience (this is essential)
Strong background across Palo Alto Networks technologies
Experience delivering within enterprise environments

Strong understanding of:

SASE architectures
Cloud security and network transformation
End-to-end delivery within a consulting environment
Comfortable engaging with stakeholders and owning delivery

Desirable

Palo Alto certifications (PCNSE, PCNSA or similar)
Experience across large-scale transformation programmes
Exposure to broader SASE and cloud security vendors

Network Engineer - SASE

United Kingdom (Remote / Hybrid)
12-Month Fixed-Term Contract
75,000 per annum
Full-time

The Opportunity

We’re hiring a Network Engineer (SASE) to join a global cybersecurity leader on a 12-month FTC in the UK.

This is a hands-on, customer-facing engineering role where you’ll support enterprise clients in deploying, optimising and scaling SASE and cloud security solutions.

This role requires prior experience working with SASE technologies. It’s not a step-up or learning-on-the-job position.

What You’ll Be Doing

Acting as the primary technical contact for enterprise customers
Supporting implementation and integration of SASE solutions
Driving adoption and optimisation of cloud security platforms
Troubleshooting complex networking and security issues
Managing escalations and coordinating with engineering teams
Advising on SASE best practices and security governance
Identifying risks and supporting mitigation strategies
Building deep expertise across the SASE stack

What We’re Looking For

Experience

5+ years in a technical role such as:
Security Engineering
Network Engineering
Technical Consulting
Post-sales / Customer Engineering
Strong customer-facing experience in enterprise environments
Proven hands-on experience with SASE solutions (essential)

Technical Skills

Strong understanding of SASE architecture and components
Solid networking fundamentals
Experience with firewalls, routers, switches and VPNs
Knowledge of CASB, SWG, ZTNA and DLP technologies
Routing protocols (BGP, OSPF, EIGRP)
Experience with IPSEC, SSL, PKI
Authentication protocols (SAML, SSO, LDAP, RADIUS)
Linux knowledge (Bash or Python beneficial)

Why Apply?

Work with cutting-edge SASE and cloud security technology
Exposure to large-scale enterprise environments
High-impact role supporting critical security infrastructure
Fast-paced, international environment

Principal Engineer (Microsoft)

Role Mission

To support customer outcomes by making deep, hands-on Microsoft centric expertise available to customers and internal teams across hybrid identity, security and endpoint management. This includes Windows Active Directory and integration with Microsoft Entra ID, unified security operations with Microsoft Defender XDR and Microsoft Sentinel, and modern endpoint and device management with Microsoft Intune and Microsoft Configuration Manager (SCCM/ConfigMgr), providing practical guidance, design assurance and implementation support where needed.

Objectives & Key Results

Deliver consulting-grade architecture assurance and outcomes for customers

Provide high-quality architecture reviews and design assurance for complex customer opportunities and deliveries, highlighting risks, trade-offs and pragmatic options
Produce clear customer-facing technical outputs (e.g., current-state assessments, target-state architectures, and phased roadmaps) that accelerate decision-making
Improve consistency and reduce avoidable rework for customers by using repeatable patterns, checklists and standards aligned to Claranet ways of working.

Essential Roles & Responsibilities

Technical Leadership & Delivery

Serve as a senior technical expert within the Office of the CTO, providing hands-on technical depth and assurance in support of the UK CTO
Provide hands-on technical contribution and specialist support across Microsoft identity, security, endpoint and cloud platforms—drawing on broader networking and architecture skills where customer engagements require it

Behavioural Competencies – Organisational & Behavioural Fit

Technological Curiosity: Naturally curious, proactively explores how new and existing technologies work, experiments safely, and shares what they learn
Hands-On Mindset: Enjoys being “on the keyboard” solving technical challenges
Customer Engagement: Exceptional presence and clarity when engaging with customers
Influence Without Authority: Guides teams through expertise and collaboration, not hierarchy
Clear Communicator: Able to articulate complex problems simply and confidently
Calm & Composed: Operates effectively in high-pressure or ambiguous situations
Ownership & Accountability: Takes responsibility for delivering high-quality outcomes
Continuous Improvement: Always seeking ways to enhance technical and engineering quality, security and efficiency
Travel: Ability to travel to different sites and locations on a weekly basis

Critical Competencies – Technical Competencies (Essential)

Strong architectural capability across Microsoft Azure and core Microsoft cloud services
Proficiency in security technologies, frameworks, and secure architecture patterns (including Microsoft Defender XDR and Microsoft Sentinel)
Strong expertise in Windows Active Directory and hybrid identity integration with Microsoft Entra ID
Experience with modern endpoint and device management and configuration management, including Microsoft Intune and Microsoft Configuration Manager (SCCM/ConfigMgr)
Hands-on capability in automation, IaC, CI/CD, scripting and platform engineering
Comfortable using AI tools to achieve outcomes (e.g., accelerating analysis, troubleshooting, automation and documentation) with appropriate security and data-handling practices

Critical Competencies – Technical Competencies (Desirable)

Experience with distributed systems or modern application architectures
Exposure to data engineering, observability platforms or edge networking

Please note: You will be required to have been resident in the UK for five years prior to application and to hold or be prepared to undergo UK Non-Police Personnel Vetting (NPPV) and/or a Security Check (SC) clearance as part of this role.

Information Security Architect

DS SMITH PACKAGING LIMITED

About DS Smith

DS Smith are a leading provider of sustainable packaging solutions, paper products and recycling services in more than 30 different countries. It’s a very exciting time to join, as we have committed to investing in our future across our strategic growth enablers within Innovation (R&D), Sustainability and Digital & Data.

Be a game changer as we invent, reimagine and redefine packaging!

About the role

We are looking to add an experienced Digital Information Security Architect to our growing Information Security Team. Reporting to the Head of Security Architecture & Assurance and working very closely with the IT Strategy & Architecture function. You will develop and implement information security architecture and technology solutions, ensuring IS and compliance requirements are adhered too as we deliver our digital transformation programme and beyond.

As the successful candidate you will support the definition of our security architecture for Digital & Data capabilities and create security architecture artefacts (models, templates, standards and procedures) that can be used to leverage security capabilities in projects and operations. You will serve as the information security expert, ensuring alignment between the security architecture frameworks and overall digital strategy. You will work closely with enterprise and functional area architects as well as security specialists, ensuring relevant and adequate security solutions are used throughout all systems and digital platforms.

As part of your role, you will conduct research into new technologies, architectures and security products which can help support our digital enterprise. You will use such research to input into the IT Strategy, reference architectures (for example B2B, Mobile Apps, IOT, Application hosting, cloud integration), as well as contributing to multi-year road maps and investment planning. You will also be experienced in managing 3rd party partners and providers through the various parts of the security programme lifecycle (horizon, RFP/RFI, design, build and operate).

The role demands business insight, technical acuity, and the ability to think, communicate and write at various levels of abstraction.

This role can be based anywhere in the UK but you might be willing to travel when needed.

About you

Bachelor’s degree in Computer Science, Information Technology, Computer Engineering or related field (desirable)
Extensive experience working in information security architecture or design roles
Certifications such as CISSP, CCSP, TOGAF, SABSA would be an advantage
Security design experience in at least one major cloud platform (Azure, GCP, AWS)
Ability to communicate and build relationships outside the IT function and fosters a collaborative working relationship with various stakeholders
Experience working in an Agile or Scrum environment (desirable)

Benefits

Competitive salary
Company bonus
Pension scheme
Life assurance
Income protection
25 days holiday plus bank holidays
Annual Cycle to Work Scheme

Cyber Security Engineer

When registering to this job board you will be redirected to the online application form. Please ensure that this is completed in full in order that your application can be reviewed.

Come and join the Littlefish team!

Work location: Nottingham or Sheffield (Hybrid)

Salary: Up to: £30,000

Must be eligible for SC Clearance (UK resident for the last 5 years) and NPPV2 clearance

As we continue to grow and evolve, we know that our strength lies in the talent, creativity, and drive of our existing workforce. You are the giant slayers who have shaped Littlefish into the business it is todayand now, were looking for the next wave of internal trailblazers to help us take things even further.

Were seeking individuals who embrace change with optimism, who think beyond the obvious, and who bring energy, curiosity, and collaboration to everything they do. Whether you’re looking to stretch your skills, take on a new challenge, or explore a fresh direction, this is your opportunity to make an impact from within.

So, if this opportunity sparks your interest and youre excited by the idea of working alongside passionate, creative, and friendly colleagues apply today.

The role and what youll be getting up to on a day to day basis:

Were hiring for a Cyber Security Engineer to join our Cyber Services Division. If you enjoy taking ownership, solving complex challenges, and making a measurable impact on customer security, this could be the role for you.

As our Cyber Security Engineer, youll play a key part in supporting and evolving our security tooling, especially our SIEM platform. Youll work directly with both internal teams and customers to ensure strong security outcomes across the board.

You will:

Take ownership of SOC tooling, with a primary focus on our SIEM platform.
Implement SIEM solutions into customer environments and tune data feeds effectively.
Work closely with the SOC to maintain and continuously improve SIEM rulesets and use cases.
Provide expert cyber guidance and technical leadership to customers.
Support major security incidents and play a hands on role in investigation and response.
Deliver cyber led project work, independently or as part of wider Professional Services engagements.
Stay ahead of emerging technologies and contribute to future security tooling roadmaps.

Who you are:

Youre confident, curious, collaborative, and passionate about improving security for customers and colleagues alike. You thrive in a role where you can influence decisions and deliver real value.

You will bring:

Strong understanding of SIEM tools and attacker behaviours.
Handson experience with O365, M365 and Azure security administration.
PowerShell scripting capability.
Experience working with firewalls, IDS, WAF, network segmentation and wider security controls.
Broad technical knowledge spanning Windows, networking, IAM, monitoring, antivirus and modern architectures.
The ability to explain complex concepts clearly to both technical and nontechnical audiences.
The ability to turn policy or regulatory requirements into meaningful technical solutions.
Experience writing technical design documents.

And it would be great (but not essential) if you also have experience with:

Azure Sentinel, AlienVault, AWS or GCP security controls.
Linux, data storage, or scripting in Python or Bash.

What can we offer you?

Through our one of a kind training programme, the Littlefish Academy, you can increase your earnings by £4,500
Referral bonus scheme of £1000 when you successfully refer a friend.
Access to our LinkedIn Learning platform, with over 16000 expert-led online tutorials to enhance and achieve your personal and professional goals.
Healthcare cash plan. This will give you access to online GP appointments, 24/7 access to qualified counsellors and cash back against a range of general healthcare
Casual dress policy
Company Pension Scheme
Company social events
25 days annual leave plus public / bank holidays
Purchase of annual leave scheme

Life at Littlefish:

Our company values shape who we are as a business, what we stand for and how we work. Hiring people with our values at heart, is very important as we see Littlefish grow.

I am High Performing-I like to raise the bar, we look at creating opportunities to increase quality and improve efficiency, we strive for service excellence.

I am Passionate-We build team success and celebrate them together, I am enthusiastic and energetic, I care about the people I work with and we support one another.

I Have a Can-Do Attitude- I am not afraid to step outside my comfort zone, we are not afraid to challenge status quo, we get stuff done!

So, if you feel like you can make a tangible difference, apply today, and join us on this journey.

Here at Littlefish we aim to be somewhere everyone can be themselves. We are committed to encouraging a diverse and inclusive community where everyone irrespective of who they are, or their background, can feel equal and supported.

We encourage applications from people of all backgrounds. Please get in touch if you are concerned about any difficulties you may face during your recruitment process, so we adjust accordingly.

Part of our application process includes a set of ED&I (Equality, diversity and inclusion) questions. Please note, each question has a prefer not to say option).

Application Security Architect

CBSbutler Holdings Limited trading as CBSbutler

Onsite in Bracknell
Eligible for DV clearance
65-70k per annum + benefits package

We are seeking an experienced Security Application Architect to support the delivery and ongoing evolution of a secure Gateway capability for a strategic UK defence customer. This role combines architectural ownership, secure design governance, and operational assurance within a high-security, mission-critical environment. You’ll shape technical direction, drive change, and ensure resilient, compliant solution delivery across engineering and support teams.

What you’ll be doing;

Own and design technical changes required to maintain and enhance Gateway capability
Produce high-quality design documentation in collaboration with the customer and Programme Manager
Support solution governance and architectural integrity
Assist in maintaining secure, resilient and scalable infrastructure components across Windows and Linux environments
Support monitoring and investigation of communications platforms such as email and XMPP-based chat, including the ability to review underlying conversation data where required for security analysis
Contribute to file validation and inspection processes, ensuring transferred files conform to expected formats and security controls

Your technical background;

Core Infrastructure

VMware / vSphere
RHEL & Windows Server
Microsoft Services
Active Directory, including Group Policy (GPO), DNS integration, LDAP directory structures, and directory management/maintenance
Resource management of server platforms and optimisation of system performance
Trellix / McAfee security platforms
SIEM integration, including syslog creation, forwarding and reporting pipelines
Email security standards and protocols

Linux & Platform Engineering

Experience working within Red Hat Enterprise Linux environments
Ability to write scripts to automate operational or security processes
Familiarity with pattern matching techniques and regular expressions (Regex), particularly within security or antivirus tooling
Configuration and management of the standard RHEL firewall
Exposure to Linux-based security tooling and antivirus technologies

Gateway Technologies

Understanding of Gateway appliances and associated software
Knowledge of secure communications protocols, including messaging platforms such as XMPP

Security & Web

Experience supporting file validation, inspection, and content verification within secure transfer environments

If you are interested in discussing this Application Security Architect role further, please reply back with a copy of your updated CV.

Head of IT - Ascot Lloyd

Reports To:

Chief Technology & Operations Officer

Location:

Birmingham [hybrid] with flexibility to travel nationwide as needed.

SM&CR Function:

Certified Role

Purpose of Role

The Head of IT is a strategic and operational leader responsible for delivering a secure, scalable, and cloud-first technology environment that enables exceptional colleague and client experiences.

This role oversees IT infrastructure, service delivery, and cybersecurity, and plays an active role in operational resilience. The successful candidate will bring energetic leadership, a passion for continuous improvement, and a commitment to best practice - fostering a culture of innovation, collaboration, and user-centricity across a nationally distributed organisation.

Key Responsibilities

Lead the delivery of IT services across Ascot Lloyd, ensuring a modern, cloud-first infrastructure that supports business agility and resilience.
Champion a user-focused approach to technology, ensuring colleagues have the tools and support they need to thrive.
Oversee IT service delivery, infrastructure, and cybersecurity, ensuring systems are secure, scalable, and aligned with business needs.
Actively contribute to operational resilience planning and execution, including business continuity and disaster recovery.
Collaborate closely with peers across all business areas to align IT strategy with organisational goals and user needs.
Manage third-party IT service providers, ensuring performance, compliance, and value through effective contract governance.
Drive a FinOps culture, embedding cost control and value optimisation across all IT operations and investments.
Use data and analytics to inform decision-making, performance reporting, and continuous improvement.
Lead IT planning and execution for office moves, acquisitions, and integration projects.
Deliver clear, actionable reporting on IT performance, risks, and opportunities to senior leadership.
Promote a culture of energetic leadership, accountability, and innovation within the IT team.
Ensure Health & Safety compliance for IT staff across office and remote working environments.
Foster a risk-aware culture that supports transparent decision-making and strategic risk-taking.

SM&CR Responsibilities

As a Certified Function under the FCA’s Senior Managers and Certification Regime (SM&CR), this role requires personal accountability and adherence to the following Conduct Rules:

Act with integrity
Act with due care, skill, and diligence
Be open and cooperative with regulators
Treat customers fairly and with respect
Observe proper standards of market conduct
Act to deliver good outcomes for clients

Experience & Skills Required

Proven leadership experience in IT within a financial services environment.
Strong understanding of cloud infrastructure, cybersecurity, and service delivery.
Experience in operational resilience and business continuity planning.
Excellent interpersonal and communication skills across all levels.
Demonstrated success in managing third-party vendors and complex IT projects.
Experience with IT governance, risk management, and regulatory compliance.
Passion for user experience and colleague enablement through technology.
Ability to lead and inspire teams in a fast-paced, multi-site organisation.
Relevant project management qualifications and technical certifications.
Data-driven mindset with experience in performance reporting and analytics.
Flexible and adaptable approach to working across locations and time zones.

Key Behaviour Indicators

Visionary leadership with a focus on execution and outcomes.
Clear, inclusive, and timely communication.
Collaborative and user-focused mindset.
Commitment to continuous improvement and innovation.
Technically proficient and able to develop others.
Energetic, accountable, and results-driven.

Group Director, Security Architecture - London Stock Exchange Group

London Stock Exchange Group

Role Purpose

As Group Director, Head of Security Architecture, you’ll be a core member of the LSEG Cyber Security team. You’ll lead and set the direction for the Cyber Security Architecture team which delivers across a number of areas:

Principal Security architecture - a team of engineers who ensure security is build in to all projects across the group. Each architect is aligned to our business units and builds a deep relationship with the teams in that unit. Security Architecture Design - a central function that delivers design patterns to ensure a consistent implementation of our controls across the group. This team researches new technologies, and provides guidance on how to secure them. They also run a project to provide a risk posture review across the application portfolio against our standards. This team also runs design forums, assists in policy and standard creation, and provides consulting on hard security problems as needed. Security Architecture review - a central function that delivers a range of security reviews - architecture governance reviews for new build and change projects; network perimeter / firewall reviews to ensure changes are in line with agreed architectures; and third party reviews ensuring our vendor / supply chain portfolio meets our security standards.

You and your teams will be involved in all major projects in the group - ranging from technology new build, cloud migration projects, transformation programs, as well as mergers, acquisition and divestments. As a critical national infrastructure provider across many global regulated markets, you will ensure our technology systems are architected to meet the security rules expected by regulators and our customers and partners.

You will need to have technical skills and experience in securing complex financial applications. The role requires a broad Security Architecture knowledge, but specifically deep application security skills. We have a separate Security Engineering team who look after infrastructure, platform security.

Role Responsibilities

Leads the development and execution of strategy for Security Architecture team, setting and driving the achievement of KPIs and objectives through effective leadership and ensuring alignment with the broader Cyber Security and Architecture Functions’ strategy
Manages performance, development and wellbeing of a team of architects across various technology domains to providing end to end architecture services
Owns the relationships with key stakeholders - including Cyber Security peers, group CTO, Heads of Architecture, First and Second line Engineering Risk, Business Information Security Officers. Defines, Manages and Operates the key functions of the Security Architecture team - Secure Design; Principal Security Architecture; Security Architecture review.
Defines architecture principles, policies and standards to produce function specific reference architectures and patterns
Contributes to the development of global enterprise standards for the central Architecture & Technology Strategy function
Builds relationships with vendors, regulators and industry bodies to seek and adopt industry best practices in enterprise architecture and technology strategy
Seeks latest technology and business innovations relevant for the function (e.g., Automation, Artificial Intelligence, Quantum Computing etc.)
Acts as trusted advisor and leader across the wider LSEG Engineering group.
Ensure Engineering projects meet critical security regulations [DORA, LPM etc]
Leads security engagement on major transformation protects.

Minimum Requirements

Knowledge of financial market infrastructure technology, and experience in deploying pragmatic security controls (e.g. trading systems, market data systems, low latency technology)
Strong deep expertise in Application Security Architecture and controls. The Security Architecture team is application security focused. A separate Security Engineering team manages the infrastructure and platform controls. As a result, the successful candidate will demonstrate technical experience in securing financial applications.
Enterprise Architecture, Technology Strategy, Cloud, Security, Applications and Infrastructure
Performing detailed security reviews of complex systems
Experience of working with architectural development methodology, standards development, technology architecture
Qualifications in security leadership, such as but not limited to CISSP, CISMP or CISM and TOGAF in architecture
Modern engineering practices, agile practices, automation and deployment pipelines.
Extensive experience in Enterprise Architecture and Technology Strategy across multiple Financial Services organisations, or similarly regulated organisations, that provide Technology Services to revenue generating divisions within large multi-country organisations
Experience of developing and influencing strategic working relationships with key technology suppliers
Experience in a leadership role within Security in a global financial Services, FinTech, or Technology organisation
Experience in managing high performing teams and empowering them to deliver against the agreed strategy & roadmap
Experience of establishing and monitoring governance, including accountability, engagement, KPI metrics, etc., and planning and controlling budgets
Strong verbal and written communication skills, with particular ability to communicate technical information to non-technical senior stakeholders and to listen to identified concerns and adapt accordingly
Experience of successfully planning and delivering large scale complex technology integrations and technology transformation programmes
Proven ability to work well under pressure - particularly during an incident.

ABOUT US:

LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. LSEG is a systemically important part of the global financial system. It is the UK’s second largest financial services business by market capitalisation, and in the top 10 of the FTSE 100.

A major financial information provider, with extensive experience, deep knowledge, and worldwide presence across financial markets, LSEG enables businesses and economies around the world to fund innovation, manage risk and create jobs. LSEG has 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 its open-access model - LSEG provides the flexibility, stability and trust that enable its customers to pursue their ambitions with confidence and clarity.

LSEG is headquartered in London, with significant operations in 70 countries across EMEA, North America, Latin America, and Asia Pacific. The Group employs 26,000 people globally, more than half located in Asia Pacific. LSEG’s ticker symbol is LSEG.

The core values of the business are integrity, partnership, excellence, and change.

LSEG has demonstrated its successful strategy as shown in its strong financial performance. Post the Refinitiv acquisition, LSEG has shifted from a period of integration to transformation. The Group is a proven innovator with its market leading strategic partnership with Microsoft enabling next-gen data, analytics and cloud infrastructure solutions.

LSEG operates across the following divisions:

Data & Analytics: delivering data-driven insights, workflow and products to customers simply and flexibly so they can make better-informed decisions.

FTSE Russell: delivering category-defining indices across asset classes and investment objectives to create new possibilities for the global investment community.

Risk Intelligence: providing a comprehensive suite of screening, due diligence, verification and onboarding solutions, helping customers protect their businesses from a wide range of threats.

Markets: supporting customers across the end-to-end capital markets workflow, providing them with access to liquidity across multiple asset classes and regions; supporting their clearing and reporting obligations; and providing risk and balance sheet solutions.

Career Stage:
Group Director

London Stock Exchange Group (LSEG) Information:

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.

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

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.

Director LCH Ltd Technology Risk & Controls - London Stock Exchange Group

London Stock Exchange Group

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 commitment 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:

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 Purpose

Responsible for reporting and managing the LCH LTD Technology Risk Profile in the context of its Risk Appetite on behalf of the LCH LTD CIO.
Oversee Critical intra-group outsourcing arrangements.
Lead and mature LCH Ltd’s first-line Technology Risk & Controls function across application, infrastructure, cloud and cyber domains.
Ensure control design and operating effectiveness meet the CCP’s obligations and LSEG group standards.
Drive delivery against key enhancement and assurance, provide authoritative risk insight to LCH executives and the Board.
Drive refinement of assurance management practices so that assurance activities are consistently risk-based and aligned with risk appetite.

Key Responsibilities

Technology Control Design & Assurance

Own the first-line technology controls library (apps, infra, cloud, cyber) for LCH Ltd; define control objectives, procedures and metrics
Partner with BSL (Group Infrastructure & Cyber) to track LCH-owned controls and deliver the uplift programmes for identified core controls.
Co-chair technology risk reviews in CAB/technical change forums in conjunction with LCH Production Management and Architecture; enforce entry criteria, quality gates, and business approvals.
Embed Group Delivery Disciplines (architecture-led, data-led, engineering-led, STP design, etc.) into technology risk checkpoints for programmes and releases.

Regulatory & External Stakeholder Engagement

Coordinate technology risk contributions to Operational Risk Committee and executive risk governance
Prepare updates on emerging risks (e.g., quantum/AI).

Third - Party Risk

Oversee TPRM for external and internal/intra-group technology suppliers-financial stability, Controls/KRI, SII, audit actions, end-of-life/patching-working with procurement, TPRM and second line risk.
Oversee the management of intragroup critical outsourcing arrangements with BSL (Infrastructure and Cyber)
Integrate cloud risk controls and assurance with LSEG Markets & Risk governance rhythms.

People & Operating Model

Build and lead a diverse team (engineering, risk assurance, data) with clear roles and development paths.
Clarify control ownership and RACI across first/second line; mentor control owners and ensure succession coverage.
Interact closely with Divisional Risk teams (2LoD), Group Technology Risk & Control team (1LoD), and with LCH LTD and 1st line technology teams.
Emphasis on influencing teams to enhance their risk management culture

Key Outcomes (12-18 months)

Control Library Alignment & Uplift: deliver prioritized uplift of control design and operating effectiveness to agreed target states. Resilient Change Delivery: Close gaps in change governance/CAB (entry criteria, quality gates, business accountability) to reduce risk of production incidents linked to change. Transparent Risk Reporting: Embed residual-risk and thematic reporting (beyond KPI/RAG) in resilience governance, with consistent sampling/testing guidance. Third-Party & Cloud Risk: Strengthen TPRM and cloud risk controls in step with LSEG Markets & RI cadence. People & Operating Model: Build a high-performing risk & controls team aligned to the BCO target operating model; clarify control ownership and RACI across first and second lines.

Required Experience

Senior leadership in Technology Risk/Controls within regulated Financial Market Infrastructure or Tier-1 financial services.
Ownership of control libraries and assurance programmes; familiarity with CEP, NIST CSF/CRI, ITIL/COBIT, ISO 27001.
Hands-on change governance/CAB leadership in complex platforms; remediation of systemic gaps.
Operational resilience and incident management expertise; experience presenting to executive and regulatory bodies.
Cloud risk oversight and third-party risk management across critical vendors.

Qualifications & Certifications (preferred)

CRISC, CISM, CISSP, ISO 27001 Lead Auditor/Implementer, ITIL Expert.
Degree in Computer Science/Engineering or equivalent experience.

Skills & Attributes

Risk intellect with engineering credibility; able to translate risk into design-level control changes.
Influence & communication: concise executive storytelling and pack preparation for boards/committees.
Delivery discipline: embeds Group Delivery Disciplines and measurable KPIs.
Stakeholder management: collaborates across first/second line, BSL, programme delivery and product technology.

Career Stage:
Director

London Stock Exchange Group (LSEG) Information:

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.

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

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.

Head of Azure Platform Security - Huxley

We have a current opportunity for a Head of Azure Platform Security on a permanent basis. The position will be based in London. For further information about this position please apply. ETrading client operates infrastructure that is genuinely critical - trading systems processing billions in daily notional value, client-facing platforms serving institutional counterparties, and cloud environments holding sensitive market and counterparty data. This role is for a cloud security architect who has never stopped being an engineer: someone who can model a threat, design the control, write the detection rule, and deploy the fix - all in the same day. You will not write policies and hand them to other people to implement. You will build and operate our security controls directly, hands on, end to end. Requirements - Hands-on Azure cloud security architecture and implementation - Defender for Cloud, Policy-as-Code, RBAC, PIM, private endpoints, and secure landing zone design; AWS security experience also considered - Network security engineering: firewall policy design and lifecycle management, micro-segmentation, NSG/UDR/NVA architecture, hub-spoke topology, and perimeter defence for hybrid environments - WAF design, deployment, and operational tuning - Cloudflare, Azure Application Gateway, or equivalent; custom rule authoring and false-positive management at production scale - Network flow log analysis and intrusion detection engineering - building detection logic for lateral movement, beaconing, anomalous egress, and C2 patterns - SIEM engineering: detection rule authoring (KQL, SPL, or equivalent), log pipeline design, alert correlation, triage workflow - you write the rules, not just read the dashboard - Endpoint and desktop security: EDR deployment and tuning (Defender for Endpoint, CrowdStrike), Intune/Jamf device management, privileged access workstations, JIT/JEA models - API and application security: threat modelling (STRIDE/PASTA), OAuth 2.0/OIDC implementation review, secrets management (Key Vault, HashiCorp Vault), and secure SDLC integration - PKI, certificate lifecycle automation, identity federation, and SSO across hybrid cloud and on-premises environments - Security automation and IaC: Python, PowerShell, Terraform, Bicep, or Sentinel analytics rules - you codify controls, you do not document them - MITRE ATT&CK coverage mapping; threat hunting, adversary emulation, and proactive gap analysis against realistic TTPs - Cloud infrastructure - Azure preferred, AWS considered; IAM, managed services, automated and auditable deployment pipelines, secrets management Nice to Have o Financial services, trading, or capital markets - operational security in a regulated, high-availability, zero-downtime-tolerance environment o Zero-trust architecture: BeyondCorp, Zscaler, or equivalent; conditional access policy design and implementation o DDoS mitigation, BGP security, and network resilience engineering for latency-sensitive financial infrastructure o ISO 27001, SOC 2, DORA, or equivalent - hands-on implementation, not just audit participation o Red team, adversarial simulation, or penetration testing programme design - experience on both sides of the exercise What We're Looking For You are a builder first and a security engineer second - meaning you solve security problems by engineering better systems, not by writing longer policies. You find the gap before an attacker does because you have thought about how you would exploit the environment yourself To find out more about Huxley, please visit www.huxley.com Huxley, a trading division of SThree Partnership LLP is acting as an Employment Business in relation to this vacancy | Registered office | 8 Bishopsgate, London, EC2N 4BQ, United Kingdom | Partnership Number | OC387148 England and Wales

Microsoft 365 Architect - SEI Investments (Europe) Ltd.

At SEI we value our employees and believe in driving growth through change. Part of building brave futures is making a concerted effort to develop and challenge our employees to achieve their goals through internal job mobility.

Microsoft 365 Architect

Location: Dublin or London (Hybrid)

Department: SEI Sphere

About SEI Sphere

SEI Sphere is a strategic and bespoke provider of IT services, both managed and professional, delivering end-to-end cybersecurity and cloud solutions. We help organizations secure their digital environments, optimize cloud operations, and maintain compliance through advanced technologies and 24/7 managed services. Our mission is to provide resilience, agility, and growth for clients in an evolving threat landscape.

Role Overview

This is a newly created position, established because of the rapid growth and ongoing expansion of our Microsoft 365 program at SEI Sphere. As our M365 practice has grown, we are seeking a Microsoft 365 Architect to lead and own our M365 practice within SEI Sphere. This role offers the opportunity to design, implement, and manage enterprise-grade Microsoft 365 solutions while collaborating closely with our 24/7 operations team. The ideal candidate will combine deep technical expertise with strong client-facing communication skills and thrive in a hybrid work environment.

Key Responsibilities

Architect solutions across the Microsoft 365 suite of products including OneDrive, SharePoint, Teams (including Teams Calling), Intune, Power Automate, and Windows 365 Cloud PCs.
Drive adoption and configuration of Microsoft Purview for data governance, DLP, and compliance reporting.
Develop governance blueprints, information architecture, and lifecycle management.
Lead tenant-level design decisions (domains, identity, conditional access, security baselines) in partnership with Security Engineering.
Optimize Microsoft 365 licensing models and cost structures for clients; provide licensing guidance during presales.
Serve as a trusted advisor for clients, providing clear communication, roadmaps, and executive-ready documentation.
Collaborate with the 24/7 operations team to ensure service continuity, incident response, and root-cause analysis.
Own the M365 backlog, standards, and best practices; maintain reference architectures and runbooks.
Support presales activities: scoping, solution design, estimates, and proposals for M365 engagements.

Qualifications

Deep hands-on expertise across Microsoft 365.
Strong understanding of Microsoft 365 licensing, security, governance, and compliance frameworks.
Proven experience architecting and implementing enterprise M365 solutions; previous MSP experience highly recommended.
Excellent client-facing communication, consulting, and presentation skills.
Ability to operate in a hybrid environment and manage multiple concurrent projects.

Certifications

Candidates should possess one or more of the following certifications (or be able to obtain them within a reasonable timeframe):

Microsoft 365 Certified: Administrator Expert (MS-102)
Microsoft Certified: Information Protection Administrator Associate (SC-400) or equivalent (Purview/DLP)
Microsoft Certified: Identity and Access Administrator Associate (SC-300)
Power Platform Solution Architect (PL-600)
Azure Virtual Desktop (AZ-140)
Microsoft 365 Certified: Endpoint Administrator Associate (MD-102)

Success Metrics

Time-to-value for new tenant deployments and major feature rollouts.
Adoption KPIs across Microsoft 365 services; automation ROI from Power Automate workflows.
Incident MTTR and change success rate in partnership with the 24/7 operations team.
Client satisfaction (CSAT) and renewal/expansion outcomes.

Why Join SEI Sphere

Work with cutting-edge cloud and security technologies, influence enterprise architecture decisions, and lead a growing Microsoft 365 practice within a global MSSP.

At SEI Sphere, we believe our people are our greatest asset. We foster a supportive, collaborative environment and are committed to maintaining a healthy work-life balance-ensuring our team members are empowered to do their best work. We invest in your growth, well-being, and long-term success.

SEI is an Equal Opportunity Employer and so much more…

After over 50 years in business, SEI remains a leading global provider of investment processing, investment management and investment operations solutions. Reflecting our experience within financial services and financial technology our UK office is based between the City of London and the growing technology hub of Shoreditch. The open plan nature of our office space, flowing lines and numerous art installations are designed to encourage innovation and creativity in our workforce. We recognise that our people are our most valuable asset and are (literally) invested in your success; we know that a healthy, happy and motivated workforce is key to our continued growth. We are focused on ensuring a healthy work-life balance and offer our employees benefits which include private medical care for you and your family, access to GPs online for appointments, enhanced family leave, volunteer days, access to thriving employee networks and not forgetting free fruit twice a week.

SEI Investments (Europe) Limited (‘SIEL’) is authorised and regulated by the Financial Conduct Authority (FRN 191713).

AI Acceptable Use in the application and interview process:

SEI acknowledges the growing integration of artificial intelligence (AI) tools into individuals’ personal and professional lives. If you intend to incorporate the use of any AI tools at any stage of the application and/or interview process, please ensure you have reviewed and adhere to our AI use guidelines .

Senior Software Engineer

Senior Software Engineer | Start-up | Cyber | London | Hybrid About the Company Hyre AI is partnering with a fast-growing, well-funded cybersecurity company building for a new reality: the AI threat era. This is a business focused on one of the most important problems on the modern internet: helping digital platforms distinguish genuine users from bots, bad actors, synthetic identities and coordinated malicious behaviour, without adding unnecessary friction for trusted customers. Their technology combines advanced intelligence, adaptive detection and real-world adversarial learning to help security teams see what traditional tools miss. They’ve already built strong traction with major customers and are now scaling both product and engineering. As part of that growth, they’re hiring a Senior Software Engineer to join a high-calibre team working at the intersection of cybersecurity, infrastructure, identity and AI. About the Role As a Senior Software Engineer, you’ll play a central role in building and scaling the core systems behind the platform. This is not a narrow feature factory role. You’ll work on the services, APIs and infrastructure that turn complex detection signals into fast, reliable, production-grade decisions. The work spans backend systems, platform engineering and security-focused product development; ideal for someone who enjoys combining technical depth with product and systems thinking. You’ll be working on \* Designing and scaling high-throughput backend services and APIs \* Building systems that ingest and operationalise behavioural, device and threat intelligence signals \* Improving performance, resilience and observability in latency-sensitive environments \* Helping create infrastructure that is secure, reliable and easy to integrate into customer environments \* Partnering closely with founders and cross-functional teammates to translate emerging threats into robust technical solutions \* Contributing to a culture of high ownership, thoughtful experimentation and engineering excellence This is the kind of role where you can have real influence over architecture, product direction and engineering standards. Required Skills \* 5 Years of professional experience in software engineering. \* Experience with TypeScript and/or Go is beneficial (but not mandatory) \* Strong foundation in Kubernetes and CI/CD pipelines. \* A resourceful, first-principles mindset; someone who thrives in ambiguity \* Ownership, curiosity, and a commitment to building things that last \* High-energy, thoughtful problem-solving, and a low-ego approach to collaboration \* Experience in an early-stage start-up or scaling environment would be a huge bonus Compensation package \* Competitive Seed-stage salary \* Stock options: share in the company’s growth \* Employer-matched pension \* The opportunity to help shape a category-defining product at an early stage Why Join This is a chance to work on a genuinely important problem with serious technical depth. You’ll be joining a company tackling the future of online trust head-on: building adaptive security systems for a world of increasingly sophisticated bots, impersonation, automation and AI-enabled attacks. If you want to do meaningful engineering work, operate close to the founders, and help build the technical foundations of a product with real-world impact, this is a standout opportunity

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Frequently asked questions

Most Security Engineer roles require a bachelor's degree in computer science, information technology, or a related field. Certifications such as CISSP, CEH, or CISM are highly valued, along with experience in network security, vulnerability assessment, and incident response.

Key skills include knowledge of security frameworks (e.g., NIST, ISO 27001), proficiency in firewalls and intrusion detection systems, expertise in encryption technologies, familiarity with cloud security, and strong problem-solving abilities.

Yes, Haystack features both on-site and remote Security Engineer job opportunities. You can filter your job search to find remote roles that match your preferences.

You can subscribe to job alerts on Haystack to receive email notifications tailored to your criteria, such as job title, location, and experience level.

Salaries for Security Engineers vary by location, experience, and company size, typically ranging from $80,000 to $140,000 annually. Some senior roles or specialized positions might offer higher compensation.