123 lead engineer jobs found in London

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...

End Date Sunday 06 September 2026 Salary Range £84,624 - £126,936 We support flexible working – click here for more information on flexible working options Flexible Working Options Hybrid Working, Job Share Job Description Summary . Job Description JOB TITLE:   Lead   Engineer – Advanced AI Engineering LOCATION:   Bristol, Edinburgh,   Leeds ,   London   or   Manchester  WORKING PATTERN:   Our work style is hybrid, which involves spending at least two days per week, or 40% of our time, at our office location.     About this Opportunity     We are looking for   Lead   Engineers to join our new Advanced AI Engineering team. You will combine applied research and solution development to create effective solutions to critical AI business challenges, building operational MVPs that our engineering teams can scale out across the Group’s business areas.    You will be working within the Data...

Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to join a team where your work helps influence economies, your ideas can drive innovation and outcomes, and your growth is backed by mentorship, continuous learning and flexibility with potential hybrid work opportunities. Help solve real-world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech. We are a collaborative and well-established team united by high engineering standards and renowned for continuous shipment of clean rigorously tested code to production multiple times a week - a pace we only anticipate accelerating with AI adoption. We are seeking a Senior Full-Stack Engineer to...

End Date Monday 07 September 2026 Salary Range £69,624 - £104,436 We support flexible working – click here for more information on flexible working options Flexible Working Options Hybrid Working, Job Share Job Description Summary We are looking for Lead Engineers to join our new AI Productivity Lab. The purpose of the Lab is to accelerate internal AI-driven employee productivity and process automation using the latest agentic co-working technologies.  Job Description JOB TITLE: Lead Engineer – AI Productivity LOCATION: Bristol, Edinburgh, Leeds or Manchester SALARY: £69,624 - £87,030 HOURS: Full-time – 35 hours WORKING PATTERN: Our work style is hybrid, which involves spending at least two days per week, or 40% of our time, at one of our office sites. Colleagues with disabilities can be supported with workplace adjustments including hybrid working expectations in line with our Flexibility Works policy.  What you’ll be doing…...

Join Citi's XVA Technology team in London as a Lead Software Engineer at Vice President level, and take on a role at the intersection of advanced software engineering and AI-driven innovation — at a firm where your code, your decisions, and your ideas operate at global scale. This role is built for a hands-on engineer with deep AI and software development expertise who can independently set and drive a technical agenda — building production systems, embedding intelligent tooling, and owning project outcomes across a complex, high-impact domain. You will work alongside high-calibre engineers and engaged business partners to architect, build, and deliver solutions that redefine how XVA risk is calculated and managed globally. Responsibilities Design, build, and maintain scalable, high-performance software solutions for XVA risk systems, writing and reviewing production-quality code while ensuring alignment with enterprise architecture standards. Build and integrate AI and...

ROLE PROFILE: CDSClear is responsible for clearing Credit Default Swap (CDS) indices, single names and options across European, US and Asian markets. Risk is a core capability of the service, supporting intraday and overnight batch margin calculations, member‑facing what‑if simulations, and pricing analytics. This contract role sits within CDSClear Risk Technology, focused on the Java‑based risk platform and risk engine that delivers quantitative margin models at scale in a highly regulated environment. ROLE SUMMARY: The role is suited to experienced engineers who have worked on risk, pricing or analytics platforms in an investment bank, CCP or similar financial services environment. You will work on systems that sit at the core of the clearing service, where correctness, performance, resilience and operational control are essential You will help build and implement the platform components and execution patterns that allow quantitative risk models to run reliably...

Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to join a team where your work helps influence economies, your ideas can drive innovation and outcomes, and your growth is backed by mentorship, continuous learning and flexibility with potential hybrid work opportunities. Help solve real-world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech. About the Team The Enterprise AI Products team is a small, high-impact global team within the Citi COO/CTO organisation, dedicated to building innovative AI solutions for the wider bank. We are at the forefront of Generative AI, delivering capabilities that enable safe and efficient use of Generative...

Job Title: Lead AI Engineer   Division: Data, Technology and Innovation   Department: AI Product Delivery   Salary:  National (Edinburgh and Leeds) ranging from £72,100 to £108,000 and London from £79,300 to £120,000 per annum (salary offered will be based on skills and experience)  This role is graded as:  Technical Specialist – Regulatory   Your external recruitment contact is  Benjamin via [email protected].   Your internal recruitment contact  is Lauren via [email protected]  Applications must be submitted through our online portal. Applications sent via social media or email will not be accepted.     About the FCA and team       We regulate financial services firms in the UK, to keep financial markets fair, thriving and effective. By joining us, you’ll play a key part in protecting consumers, driving economic growth, and shaping the future of UK finance services.   The Data, Technology and Innovation (DTI) division enables the...

Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to join a team where your work helps influence economies, your ideas can drive innovation and outcomes, and your growth is backed by mentorship, continuous learning and flexibility with potential hybrid work opportunities. Help solve real-world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech. We’re looking for a hands-on engineering lead with a passion for building AI-powered products and shaping engineering culture. You’ll provide technical leadership while remaining close to the code, partnering with teams across the organisation to build scalable developer platforms, influence engineering...

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...

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 65 countries across EMEA, North America, Latin America and Asia Pacific. We employ...

Role Profile The Senior lead Scala Engineer will play a key role in the engineering and delivery of a critical market‑infrastructure service within the Equities platform, with a strong focus on AWS cloud‑native development. Reporting directly to the Senior Technical Delivery Engineer, Post Trade, the successful candidate will be responsible for designing, implementing, and maintaining performant, resilient, and scalable backend services built predominantly in Scala. As a senior member of the engineering team, this individual will help shape technical direction, contribute to best-in-class engineering standards, and actively support the continued growth and evolution of the business. This exciting opportunity requires a candidate to take Pride in their work and Ownership of their work. Have excellent engineering skills, communication skills, can-do behaviour and highly collaborative. Always positively encouraging the team. Key Responsibilities A strong focus on...

Lead AI Engineer (Principal Consultant) Location: London (Hybrid) | Practice Area : Technology & Engineering | Type: Permanent Empower the next frontier of AI with Capco. Shape, build, and deliver future-ready generative systems. The Role We’re looking for a Lead AI Engineer (Principal Consultant) to join our Technology Delivery Team. You’ll combine your expertise in AI/ML engineering and software development to build and deploy cutting-edge generative AI and agentic systems across the financial services sector. As a hands-on leader, you’ll architect AI solutions, embed them within enterprise environments, and drive impactful outcomes through advanced engineering, scalable pipelines, and deep cross-functional collaboration. What You’ll Do Architect and develop autonomous AI systems integrating multi-modal LLMs (text, image, audio, video) Design agentic workflows enabling AI agents to interact with data sources and APIs using prompt engineering and RAG...

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...

End Date Thursday 03 September 2026 Salary Range £72,702 - £80,780 We support flexible working – click here for more information on flexible working options Flexible Working Options Hybrid Working, Job Share Job Description Summary . Job Description JOB TITLE:   OpenShift Senior Engineer (Kubernetes/OpenShift) SALARY:  £72,702 - £80,780 LOCATION(S):  Manchester, Leeds, or Edinburgh HOURS: Full-time – 35 hours per week (There is an on-call requirement) WORKING PATTERN: Our work style is hybrid, which involves spending at least two days per week, or 40% of our time, at our Manchester, Leeds, or Edinburgh office sites. Colleagues with disabilities can be supported with workplace adjustments including hybrid working expectations in line with our Flexibility Works policy.  About this opportunity This is a technical leadership role shaping the future of the OpenShift and Private Cloud platform at Lloyds Banking Group. You’ll lead...

End Date Wednesday 02 September 2026 Salary Range £92,701 - £109,060 We support flexible working – click here for more information on flexible working options Flexible Working Options Hybrid Working, Job Share Job Description Summary . Job Description JOB TITLE: Senior Lead Data & AI Scientist SALARY: £92,701 - £108,000 LOCATION(S): Manchester HOURS: Full Time WORKING PATTERN:  Our work style is hybrid, which involves spending at least two days per week, or 40% of your time, at one of our office sites.  About this opportunity Do you want to shape how AI, machine learning and agentic technologies improve the financial wellbeing of millions of customers? As a Senior Lead Data Scientist and AI & Machine Learning Engineer within our Financial Wellbeing Platform, you'll play a leading role in defining and delivering innovative AI solutions that help colleagues and customers make better financial decisions. You'll work across...

About this role: We are seeking an AI Engineer to help design, build, and deliver next-generation AI-enabled applications and agentic systems. This role combines hands-on engineering across frontend applications, Python backend services, MCP infrastructure, agent workflows, and secure enterprise integrations. As an AI Engineer, you will build user-facing applications and backend services that integrate withModel Context Protocol (MCP) servers, LLM-based applications, RAG-based retrieval systems, and agent orchestration platforms . You will work closely with AI developers, platform engineers, product teams, and other stakeholders to deliver scalable, secure, observable, and production-ready AI solutions. This engineering role is suited for candidates who can contribute across the full stack while also helping shape reusable patterns for MCP-enabled tools, skills, and agent-driven workflows. In this role you will Design, build, and maintainAI-enabled applicationsusing...

Solution Designer, RTGS Technology Location: Leeds Job Description RTGS is the Bank of England's Real Time Gross Settlement service - critical national infrastructure that underpins the UK financial system, settling hundreds of billions of pounds each day. We are looking for a Solution Designer to play a key role in shaping how RTGS evolves. Working closely with engineering teams, you will ensure that changes - particularly across payment flows, integrations, and platform services - are clearly understood, buildable, and resilient before and during delivery. This role sits at the intersection of strategy, architecture, and delivery, turning roadmap intent into clear, practical designs grounded in real engineering experience - ensuring solutions work in practice, not just in theory, including failure scenarios, recovery, and operational constraints. Flexible Working Options This role is open to flexible working patterns, these may include: Flexible...