Engineer: Developer Experience & Platform Are you obsessed with automation and building better workflows? We’re looking for a Platform/Infrastructure Engineer to join our team and empower our developers by building world-class tooling and CI/CD systems. What You’ll Do Build & Automate: Develop CI/CD pipelines and infrastructure using Python, Bash, and the command line.
Innovate with AI: Integrate AI tools into our dev-cycle to boost team productivity.
Problem Solve: Proactively identify bottlenecks in our build systems and fix them.
Collaborate: Work closely with mobile, web, and backend teams to improve their daily experience. What We’re Looking For Solid experience in Platform Engineering or Developer Tooling.
Proficiency in scripting/automation and CI/CD systems.
A proactive, curious mindset with excellent communication skills.
Ability to work effectively with AI-assisted development tools. Nice to Have Experience with Bazel, Monorepos, or Infrastructure-as-Code.
Background in Mobile (iOS/Android) or Backend development.Ready to build the engine that powers our software? Apply now! Randstad Technologies is acting as an Employment Business in relation to this vacancy

Full Stack Developer (Python / React) - SC Cleared Location: Remote (UK) Rate: Up to £525 per day (Umbrella only) Clearance: Active SC Clearance required Sector: Public Sector
IR35 Status: Inside IR35 (PAYE via Umbrella) The Role We are seeking an experienced Full Stack Developer to support proof-of-concept development within a secure public sector environment. This is a fully remote opportunity working on modern application server technologies, contributing to rapid development and validation of technical solutions. Key Responsibilities Develop proof-of-concept applications
Deliver full stack development across front-end and back-end components
Build responsive user interfaces using React
Develop back-end functionality using Python
Manage code repositories using Git
Work with SQL databases
Collaborate within an agile technical team Required Skills & Experience Strong Python development experience
Front-end development experience with React
Experience using Git for version control
Solid knowledge of SQL
Experience developing proof-of-concept solutions
Ability to work effectively in a remote environment Security Requirements (Essential) Active SC Clearance required
Sole UK Nationals only
Must hold a UK Passport

Role: Data Scientist Type: Contracts (6 Months) Location: London, UK (REMOTE) Working Model: Fully Remote Payrate: (Apply online only) GBP/day on PAYE (Apply online only) GBP/day on RUPAYE (Apply online only) GBP/day on Inside IR35 on Umbrella The Role: Join our team to drive data quality and empower cross-functional decision-making by building robust pipelines and self-serve data products. You will be essential in defining metrics for platform health, developer productivity, and ML/AI adoption. What You Will Do: Own end-to-end analytical data modeling in BigQuery using dbt. Build reliable data pipelines utilizing SQL, Python, and distributed processing frameworks (Apache Spark, Scio, Beam, or Flink). Develop clear, story-driven dashboards using tools like Looker or Tableau. Champion data quality, implement CI/CD for dbt models, and mentor junior team members.What You Bring: 5+ years of experience in analytics or data engineering, with deep expertise in SQL. Extensive experience with dbt, a cloud data warehouse, and workflow orchestrators (Airflow, Dagster, Prefect, or Flyte). Proficiency in Python for data analysis and automation. Bonus: Experience with experimentation, ML/AI metrics, or platform productivity.This is an urgent vacancy with a deadline where the hiring manager is shortlisting for an interview immediately. Please apply with a copy of your CV or send it praveen. sukkala2 @ randstaddigital. Com Randstad Technologies is acting as an Employment Business in relation to this vacancy

• Location: United Kingdom (Fully remote - must live and be able to work in the UK)
• Job Type: Full-time
• Eligibility: Must have full right to work in the UK (no sponsorship available)

I am very excited to offer an opportunity for a skilled Data Engineer with expertise in Celonis to join a well-established, international professional services organisation.

This company is renowned for delivering data, analytics, and automation solutions to large, complex businesses, particularly in finance, operations, supply chain, and customer functions. As part of their UK delivery team, you will play a crucial role in supporting major transformation programmes through practical, hands-on data engineering.

Day-to-day of the role:

• Design, develop, and maintain scalable data pipelines to feed Celonis from various source systems.
• Build, integrate, and optimise SQL Server-based data warehouse pipelines.
• Support migration initiatives towards a modern Microsoft Fabric architecture.
• Develop and maintain Celonis data models using Celonis Data Integration.
• Translate business and reporting requirements into technical data specifications.
• Write and optimise SQL and Celonis PQL queries to support dashboards and analysis.
• Develop Python scripts for data cleansing, transformation, and automation.
• Implement data quality checks and reconciliation processes across systems.
• Provide technical support to analysts and business users working with Celonis.
• Ensure adherence to data governance, security, and access control standards.

Required Skills & Qualifications:

• Proven commercial hands-on experience with Celonis in a delivery environment.
• Strong experience with Celonis Data Integration and analysis development.
• Solid SQL skills (data transformation, optimisation, and performance tuning).
• Proficiency in Python for data engineering and automation tasks.
• Good understanding of ETL / ELT processes and data modelling.
• Experience working within Agile delivery teams.
• Strong analytical skills and meticulous attention to detail.
• Ability to engage effectively with both technical and non-technical stakeholders.

Desirable Skills:

• Celonis Data Engineer certification.
• Experience with SQL Server and Microsoft Fabric.
• Experience integrating data from enterprise platforms (ERP, CRM, finance systems, etc.).
• Experience in a consulting or client-facing delivery role.
• Familiarity with cloud data platforms (Azure, AWS, or GCP).

Benefits:

• Opportunity to work in a dynamic, international environment.
• Competitive salary+ bonus and benefits package.
• Professional development and career advancement opportunities.
• Flexible working arrangements (remote / hybrid).

To apply for this Celonis Data Engineer position, please apply with an updated CV

Are you a Business Management Software specialist?

Do you have any of the following ERP systems experience?

ODOO, SAP, Salesforce, or NetSuite?

Our clients are now actively looking for a highly motivated person who is looking to get stuck in. These roles would be suitable to an individual wanting to take their next steps in an ERP systems career.

Your work location would be remote based.

Salary between 35000 to 65000 depending on your experience.

We are in search of a dynamic developers to join and contribute to the growth of the business. The chosen developers will be tasked with designing, creating, and maintaining solutions for their clients. Collaborating with a team of project managers and technical leads, the developer will play a key role in delivering high-quality solutions that align with client specifications, meeting deadlines, and staying within budget.

This presents an excellent chance for individuals seeking to immerse themselves in a new environment and industry.

The ideal candidate should possess a proactive mindset and exhibit entrepreneurial thinking. They should excel in adhering to strict timelines and objectives, providing insightful analysis on new initiatives. Ultimately, the candidate will contribute to ensuring our company’s success in achieving both immediate and long-term business goals.

Their team of subject matter experts customises each implementation to optimise results for their clients based on their unique business requirements.

Join them in this opportunity to be an integral part of our impactful journey.

In alignment with their daily activities and functions, this individual will be assigned specific responsibilities tailored to their skill set and expertise within their role, as well as the essential requirements and needs of the department.

Key Responsibilities:

• Formulate, create, and uphold solutions
• Contribute to the development of modules, extensions, and integrations
• Play a role in the entire software development cycle
• Collaborate with managers, technical leads, and fellow developers
• Identify and resolve issues through troubleshooting and debugging
• Stay informed about the latest feature releases
• Participate in code reviews to ensure adherence to best practices
• Assist the implementation team
• Support the exploration and development of ideas proposed by the Head of Services
• Provide ongoing support and maintenance

Qualifications:

In addition to the roles and responsibilities integral to the position, candidates must meet the following requirements, showcasing skills and qualifications to confirm suitability for the role.

• Minimum of two years’ experience in development
• Profound knowledge of ERP platforms and their functionalities
• Comprehensive understanding of ERP framework and its modules
• Proficiency in Python and PostgreSQL
• Solid grasp of data modeling and data management
• Robust problem-solving and troubleshooting capabilities
• Effective written and verbal communication skills
• Bachelor’s degree in computer science or a related field
• Experience with Agile development methodologies is advantageous

Core Skills

The candidate must have the following soft-core skills to be a great fit for the role.

• Excellent communication and presentation skills (written & oral)
• Critical thinking
• Innovative, proactive and enthusiastic
• Amazing organisation skills and detail-oriented
• The ability to meet strict deadlines under pressure
• Passionate about Odoo, and want to always deliver
• Having the agility to multi-task across a given time period
• An interest in technology
• Can work both in a team or as an individual
• Fluent in another language (not essential but desirable)

+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.

Full Stack Developer (Python / React) - SC Cleared

Location: Remote (UK)
Rate: Up to 525 per day (Umbrella only)

The Role

We are seeking an experienced Full Stack Developer to support proof-of-concept development within a secure public sector environment.

This is a fully remote opportunity working on modern application server technologies, contributing to rapid development and validation of technical solutions.

Key Responsibilities

• Develop proof-of-concept applications
• Deliver full stack development across front-end and back-end components
• Build responsive user interfaces using React
• Develop back-end functionality using Python
• Manage code repositories using Git
• Work with SQL databases
• Collaborate within an agile technical team

Required Skills & Experience

• Strong Python development experience
• Front-end development experience with React
• Experience using Git for version control
• Solid knowledge of SQL
• Experience developing proof-of-concept solutions
• Ability to work effectively in a remote environment

Security Requirements (Essential)

• Active SC Clearance required
• Sole UK Nationals only
• Must hold a UK Passport

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

Salary: £200k base + bonus

Summary:

Exciting opportunity to work at a tech-centric prop trading fund which trades a wide range of financial products, with offices across the globe. Work is organized into small, project-oriented teams, each with the independence and responsibility to make decisions that impact the business.

Python is their go-to language for data analysis, visualization and machine learning; you’ll join the team responsible for the tools that support the Python work, such as CI for test running and static analysis and automation around the deployment of Python environments & apps.

Seeking skilled engineers with experience building Python tooling at large scale who are looking for a wide-ranging role that involves both technical and product design challenges.

The successful candidate will be a smart, curious software engineer who enjoys finding solutions for complex problems. If you also have a great appetite for learning new things, this role is for you!

Requirements:

• Substantial Python tooling development experience, plus a desire to learn other languages
• Experience building a system responsible for multiple languages is important
• Thorough understanding of Python tools and libraries, keen to offer advice on best practices
• Outstanding communication skills, able to understand user requirements and design appropriate solutions

NB: Please don’t apply if you’re a fresh graduate.

Benefits and Incentives:

• Substantial and varied range of project work
• Market-leading compensation
• Great company culture, including relaxed dress code, huge emphasis on work-life balance, learning outside of the workplace
• Collaborative and innovative environment where each person has the opportunity to make a significant impact

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 this sounds like you or you’d like to know more, please get in touch:

Andy Stirling-Martin
andy@oxfordknight.co.uk
020 3137 9579
linkedin.com/in/andrew-stirling-martin-7664a946

Salary: £200k + bonus

Summary

Join a sophisticated technology team in the London office of a prop trading house that places software development at the centre of business strategy. This team have the responsibility of a trading group and a core infra team.

This role is for a senior engineer who is able to take on problems at all levels of the software stack, including low-level code to drive network hardware, super reliable high-performance trading infrastructure and time-saving internal tools. You will be taking ownerships of projects and writing production code from day one.

Working collaboratively alongside the traders, this is very much a hands-on role with a real impact on improving people’s daily work. The development team enjoys great flexibility when planning roadmaps and deciding which features to implement.

Requirements

• BS in Computer Science or Computer Engineering (or equivalent experience)
• Expert-level experience programming in C / C++11/17/20/23 and Python
• Previous finance experience, or other significant hands-on development
• Linux guru
• Ability to juggle a lot of priorities and continuously deliver
• Interest in finance / machine learning / big data and/or robotics are pluses

NB: Please do not apply if you are a fresh graduate.

Benefits

• Vibrant, flexible and inspiring work environment with excellent rewards
• They’re willing to be flexible with WFH
• Free food / gym onsite

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 this sounds like you or you would like to know more, please get in touch:

Andy Stirling-Martin
andy@oxfordknight.co.uk
020 3137 9579
linkedin.com/in/andrew-stirling-martin-7664a946

Salary: up to £200k + bonus

Summary

High-frequency prop trading firm with offices worldwide are looking to expand their in-house trading team with a talented software developer well-versed in modern C++.

Enjoying high levels of autonomy, the successful candidate will design, develop and implement a low-latency, high-frequency trading platform. You will also contribute to the development and optimization of large-scale parallel computation problems involving large amounts of shared data, and improve performance by optimizing the efficiency of machine learning-based algorithms.

The ideal candidate will be comfortable managing multiple tasks in a fast-paced environment and possess exceptional communication skills in English, both verbal and written.

Requirements

• 5+ years of practical experience in C++ and 3 years with Python
• Professional experience of C++ 14/17/20
• Strong proficiency with data structures, algorithms, and OOP
• Sound experience using other programming languages, such as Java
• Solid working knowledge of Linux and SQL
• Self-starter, with a passion for innovation and building systems from scratch

NB: Please do not apply if you are a fresh graduate.

Benefits

• Competitive salary + bonuses
• They’re willing to be flexible with WFH
• Benefits including medical insurance and gym membership
• Collaborative and friendly environment with smart, highly engaged colleagues
• Relaxed, dress-down office culture, with breakfast, lunch and snacks provided

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 this sounds like you or you would like to know more, please get in touch:

Andy Stirling-Martin
andy@oxfordknight.co.uk
020 3137 9579
linkedin.com/in/andrew-stirling-martin-7664a946

Salary: £200k + bonus

Summary

One of the largest global HFT funds looking for a highly proactive engineer to join their rapidly expanding crypto division as they help shape the future of the industry.

In this role, you will develop a deep understanding of the crypto landscape and underlying data that powers the firm’s crypto trading business. You’ll join the development group building a robust and resilient back office, responsible for inventory management & monitoring, reconciliations, calculations and reporting. You’ll also collaborate with traders and the ops team, assisting with data management, identifying data integrity issues and solving mission-critical problems.

Unique in their field, this firm combines the lively, positive spirit of a start-up with the stability of a longer-established player.

Requirements

• Minimum 3+ years’ hands-on development experience
• Strong Python skills required (some C++ would be a plus)
• Experience with SQL databases (MySQL and Clickhouse) and messaging solutions (e.g. Kafka) is required
• Degree in Computer Science or Engineering (or its equivalent) from a top-tier university
• Proponent of clean, robust design

Desirable

• Back office experience preferable: good understanding of trade positions, P&L, and how these values are computed from raw trade data
• Experience with large data volumes processing and distributed systems is a major plus.

NB: Please don’t apply if you’re a fresh graduate

Benefits

• Competitive base salary & bonus
• Enormous opportunity to grow, learn and have a significant business impact
• Contributions are rewarded; career progression supported
• Substantial benefits package, including private medical, paid parental leave, group life assurance & parking/cycle schemes

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 this sounds like you, or you’d like to know more, please get in touch.

Andy Stirling-Martin
andy@oxfordknight.co.uk
020 3137 9579
linkedin.com/in/andrew-stirling-martin-7664a946

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/

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.

Salary: £200k + bonus

Summary

Unique in their field, this HFT fund has the lively, positive spirit of a start-up with the stability of a longer-established player. They hire exceptional talent in Maths, Physics and Computer Science, from across the trading, tech and start-up industries, to apply cutting-edge research to global financial markets.

One of their fast-growing quant trading teams is looking to hire a dynamic FPGA Developer with HDL development experience.

You will collaborate extensively with traders and technologists to evolve, improve and maintain all elements of the team infrastructure. This role offers the opportunity to gain exposure to a wide range of interesting and challenging problems involving high performance computing, software design and big data, where most problems require high-availability, high-throughput and low-latency solutions.

The trading team sees technology as a key component of their continued success and candidates will be exposed to cool, cutting-edge technologies. The i deal candidate will have leadership experience and be able to step into a Team Lead role post-12 months as an individual contributor

This firm also has roles within its core tech group if you’re not keen working on trading desks.

Requirements

• At least 5+ years’ hands-on development experience in HDL (SystemVerilog/VHDL) with C++ knowledge
• Solid experience in solving numerical problems with existing commercial architectures (CPU/GPU/FPGA/etc.)
• Sound knowledge of bridging solution from both hardware & software
• Experience in Linux system programming & computer architecture
• Desirable: exposure to Python or a willingness to gain proficiency quickly

NB: Please do not apply if you are a fresh graduate.

Benefits

• Competitive base salary & bonus
• They’re willing to be flexible with WFH
• Enormous opportunity to grow, learn and have an impact
• Contributions are rewarded; career progression supported
• Unique culture where you can fulfil your potential through collaboration and mutual respect

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 this sounds like you, or you’d like to know more, please get in touch.

Andy Stirling-Martin
andy@oxfordknight.co.uk
020 3137 9579
linkedin.com/in/andrew-stirling-martin-7664a946

Head of Machine Learning Modeling

A global quantitative trading organization built around engineering excellence, scientific thinking, and fully automated trading.

Our teams create everything in-house—from the research infrastructure to the algorithms that run live in markets around the world.

We trade a wide mix of products, including equities, derivatives, options, commodities, rates, and crypto using both high-frequency and mid-frequency strategies.

Our dedicated team members are located across multiple continents, and while we maintain physical offices, our workflow is currently designed for a remote environment.

About the Role

We’re hiring an experienced ML leader to guide the next generation of predictive modeling that powers our research and trading systems. In this role, you’ll own the strategy, design, and execution of our modeling framework—from architecture choices to validation standards to production governance.

You’ll collaborate closely with quant researchers, data specialists, engineers, and traders to turn cutting-edge research into reliable, high-performance models used in live trading.

Responsibilities

You’ll be responsible for one of the most critical layers of our research platform—the modeling engine that feeds our trading systems. Your work will influence how we research, validate, and deploy ML-driven signals across the firm.

• Setting the long-term vision for our model portfolio, covering everything from boosted trees to time-series deep learning, graph-based models, and advanced architectures for order-book prediction.
• Designing training pipelines that enforce strict data hygiene—rolling and walk-forward validation, target construction, and leakage-free workflows.
• Building explainability and diagnostic tooling (SHAP, permutation tests, model dissection techniques) to understand model behavior.
• Developing ensemble strategies and regime-aware model routing.
• Leading and mentoring a team of ML researchers, shaping best practices for experimentation and documentation.
• Partnering with engineering and trading teams to ensure smooth deployment of models into live trading systems.

Requirements/Core Experience

• 5+ years working with machine learning, with at least 2 years applying ML in quantitative finance/investments/trading
• In depth knowledge of modern ML methods and architectures.
• Strong statistical foundation—comfortable with hypothesis testing, bootstrapping, time-series quirks, and related methods.
• Experience building ML systems that operate in real-time or near-real-time environments.
• Strong command of alpha evaluation (IC, rank correlations, stability, decay).
• Proficiency in Python and the scientific/ML ecosystem (NumPy, Pandas, PyTorch/TensorFlow).
• Understanding of market microstructure, order flow, order-book dynamics, and factor behavior is a major plus
• Experience guiding technical teams and shaping modeling direction.

Role Overview: 1. Drive research into short-horizon, high-frequency trading signals with typical holding periods of several hours to a few days 2. Take ownership of execution and market microstructure research, helping optimize trading strategy design and implementation 3. Collaborate with a cross-functional team of researchers, technologists, and portfolio managers in a highly iterative, data-driven workflow 4. Build and oversee a small, high-caliber team of junior researchers (2–3 people), contributing to both leadership and hands-on research 5. Leverage a modern research stack that includes distributed computing environments (e.g. AWS, Slurm), large-scale data tools (e.g. kdb+, Exasol), and advanced methods in statistics and machine learning Ideal Candidate Will Have: 1. 3+ years of experience in a quantitative trading or research role at a hedge fund, proprietary trading firm, or sell-side algo desk 2. Demonstrated contributions to alpha generation or strong potential to do so in a collaborative environment 3. Strong academic credentials (First Class, Honours, MSc or PhD) in a quantitative or technical field such as Mathematics, Statistics, Physics, Computer Science, Engineering, or Finance 4. Familiarity with high-frequency or tick-level data and an ability to derive actionable insights from complex datasets 5. Proficiency in Python or C++; experience with distributed computing and low-latency research environments is advantageous 6. Strong preference for candidates with kdb+/q experience and familiarity with execution protocols such as FIX 7. Confident communicator, able to clearly explain concepts, defend ideas, and work collaboratively with non-research stakeholders

Automation Engineer - Python, API integration, Power Automate Location: Remote based. Salary: Paying up to 80k, depending on experience A highly respected Managed Services Provider based in London, is seeking a talented Automation Engineer to drive integration and automation initiatives across their service tooling environment. This is an excellent opportunity for a senior engineer with strong scripting and API skills who wants to design intelligent solutions, streamline operations, and help create reusable automation packages that can later be rolled out to customers. Role Responsibilities Developing integrations across the client's key platforms, including Halo, RMM tools, and financial systems-leveraging direct APIs, without middleware. Designing and implementing automation workflows using Python, REST API integrations, Microsoft Graph API, Power Automate, JavaScript, and PowerShell. Contributing to a backlog of automation and efficiency projects, selecting the right tools and approaches to deliver scalable outcomes. Building solutions that can be refined and packaged for customer deployment as part of the MSP's expanding service offering. Working on API‑driven solutions and integrations with emerging technologies, including links into OpenAI and other modern automation capabilities. Collaborating with internal teams to understand process bottlenecks and opportunities for intelligent automation. Candidate Profile Experience in automation engineering or a similar role within an MSP, IT services, or fast‑paced technical environment. Strong practical understanding of API integrations and how to connect multiple systems in a secure, stable way. Proficiency with Python and experience interacting with RESTful services. Working knowledge of Microsoft Graph API, Power Automate, JavaScript and/or PowerShell. Comfortable owning small‑to‑medium automation projects from concept to delivery. Curious, solutions‑driven, and able to translate technical ideas into practical operational improvements. What's on Offer Opportunity to work on a diverse pipeline of real‑world automation projects. Exposure to next‑generation tooling and AI‑driven integrations. Clear progression within a forward‑thinking MSP with a strong engineering culture. A collaborative environment where ideas are encouraged and technical creativity is supported. Remote based. Paying between £(phone number removed), depending on experience. Must be eligible to work in the UK

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
The Applications Development Senior Programmer Analyst is an intermediate level position responsible for participation in the establishment and implementation of new or revised application systems and programs in coordination with the Technology team. The overall objective of this role is to contribute to applications systems analysis and programming activities.

Citi is seeking a highly motivated candidate for Senior Python developer in Wholesale Credit Risk Technology team that serves Institutional Credit Management (ICM). We are looking for a talented professional with a solid technical acumen to partner with onshore and offshore teams and design and deliver innovative technology solution for the front office, Credit Risk Business. The candidate will be a core member of the technology team responsible implementing projects based on Python, FastAPI , MCP, LLM, Java and using latest technologies. Excellent opportunity to immerse in and learn within the Wholesale Credit Risk Division and gain exposure to business and technology initiatives targeted to maintain lead position among its competitors.

Job Requirements

• Research and resolve complex issues, escalating as appropriate.
• 5+ years of hands on experience in building an enterprise scale highly componentized application using Python, FastAPI
• Hands on development experience in Python
• Experience working with CI/CD pipelines, Kubernetes and other containerized platforms.
• Ability to effectively interact, collaborate with development team
• Ability to effectively communicate development progress to the Project Lead
• Work with developers onshore, offshore and matrix teams to implement a business solution
• Investigate possible bug scenarios and production support issues
• Recent experience with modern Python Development using Large Language models, Model Context Protocol, & Retrieval Augmented Generation (RAG) architecture
• Experience developing application in Financial Services industry is preferred

Education:

• Bachelor’s degree/University degree or equivalent experience

This job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required.

Job Family Group:
Technology ------------------------------------------------------
Job Family:
Applications Development ------------------------------------------------------
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.

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
The Applications Development Intermediate Programmer Analyst is an intermediate level position responsible for participation in the establishment and implementation of new or revised application systems and programs in coordination with the Technology team. The overall objective of this role is to contribute to applications systems analysis and programming activities.

Citi is seeking a highly motivated candidate for Python developer in Wholesale Credit Risk Technology team that serves Institutional Credit Management (ICM). We are looking for a talented professional with a solid technical acumen to partner with onshore and offshore teams and design and deliver innovative technology solution for the front office, Credit Risk Business. The candidate will be a core member of the technology team responsible implementing projects based on Python, FastAPI , MCP, LLM, Java and using latest technologies. Excellent opportunity to immerse in and learn within the Wholesale Credit Risk Division and gain exposure to business and technology initiatives targeted to maintain lead position among its competitors.

Job requirements

• Research and resolve complex issues, escalating as appropriate.
• 3+ years of hands on experience in building an enterprise scale highly componentized application using Python, FastAPI
• Hands on development experience in Python
• Experience working with CI/CD pipelines, Kubernetes and other containerized platforms.
• Ability to effectively interact, collaborate with development team
• Ability to effectively communicate development progress to the Project Lead
• Work with developers onshore, offshore and matrix teams to implement a business solution
• Investigate possible bug scenarios and production support issues
• Recent experience with modern Python Development using Large Language models, Model Context Protocol, & Retrieval Augmented Generation (RAG) architecture
• Experience developing application in Financial Services industry is preferred

Education:

• Bachelor’s degree/University degree or equivalent experience

This job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required.

Job Family Group:
Technology ------------------------------------------------------
Job Family:
Applications Development ------------------------------------------------------
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.

Role profile:

We are seeking a knowledgeable Quantitative Developer to join the Sustainable Index Research and Design team at FTSE Russell, a wholly owned subsidiary of the London Stock Exchange Group. The role reports directly to the Head of Sustainable Index Research and Design. The Sustainable Index Research & Design team is responsible for the development, design, and research of sustainable indices and related materials. The team works closely with both internal front- and back-office departments, as well as FTSE Russell’s partners and key clients, including major asset owners, fund managers, and investment banks, in the creation of new index products.

ROLE SUMMARY:

• We are seeking a Python Developer to join our team in developing scalable and efficient software solutions to support investment analytics and index construction.
• This role involves full lifecycle development, from design and implementation to continuous deployment, and close collaboration with quantitative researchers and product teams.
• The successful candidate will contribute to automating analytics, integrating research models, and enhancing performance and maintainability of our codebase.

WHAT YOU’LL BE DOING:

• Implement Python applications using object-oriented programming principles.
• Participate in the full software development lifecycle, including conceptualization, development, testing, and deployment.
• Analyse and optimize existing code for performance and maintainability.
• Work closely with quantitative researchers to integrate models and algorithms.
• Develop scalable, automated investment analytics and reporting tools.
• Collaborate to design and develop new index products.
• Respond to internal and external research queries related to index construction and analytics.

WHAT YOU’LL BRING:

• Bachelor’s or Master’s degree (or equivalent experience) in Computer Science, Engineering, Mathematics, or a related technical field.
• Strong Python programming skills with an emphasis on object-oriented design
• Experience using data analysis libraries such as pandas and numpy, and visualisation tools like Matplotlib or Plotly.
• Familiarity with version control (Git) and collaborative development workflows, and software testing principles and frameworks
• Ability to clearly communicate technical concepts within a multi-functional team.
• A proactive outlook with a willingness to learn and adapt in a fast-paced environment.
• Strong time management and the ability to handle fast turnarounds and shifting priorities.
• Ideally, a background or interest in financial markets, financial instruments, sustainable investment and investment analytics.

WHAT YOU’LL GET IN RETURN:

• A comprehensive compensation package that includes a competitive salary, performance-based bonuses, and a robust benefits programme.
• Opportunities for ongoing training and professional development, including access to workshops, seminars, and conferences to improve your skills and advance your career.
• A flexible work environment that supports a healthy work-life balance, including remote work options and generous paid time off.
• The opportunity to contribute to meaningful projects that drive sustainable investing practices, making a positive impact on the environment and society.
• A dynamic and inclusive workplace where diverse perspectives are valued, encouraging collaboration and innovation among team members.
• The chance to participate in our thought leadership initiatives, influencing industry discussions on sustainable investing.

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.