Lead Java Engineer

ABOUT LSEG

LSEG (London Stock Exchange Group) is a diversified global financial markets infrastructure and data business. We enable businesses and economies around the world to fund innovation, manage risk and create jobs. With over 300 years of experience, LSEG has contributed to financial stability and growth worldwide, providing trusted infrastructure services and a flexible open‑access model that fosters confidence and clarity.

ROLE SUMMARY

This role sits within our Risk Intelligence division, delivering critical services that support anti‑money laundering and financial crime prevention across global markets. It is a hands‑on role for a Java expert who builds high‑quality backend systems, shapes technical direction and works with message and event‑driven architectures.

WHAT YOU'LL BE DOING

• Hands‑On Engineering: Designing, developing and maintaining high‑performance Java services that are scalable, secure and resilient.
• Modern Backend Design: Applying Domain‑Driven Design and message‑/event‑driven design principles to build loosely coupled, well‑structured systems.
• Code Quality & Craftsmanship: Writing clean, maintainable code and contributing to peer reviews, championing best practices and continuous improvement.
• System Evolution: Helping modernise and evolve existing platforms, balancing pragmatic delivery with long‑term architectural health.
• Collaboration: Working closely with product managers, architects and fellow engineers to turn complex business requirements into robust technical solutions.
• Developer Experience: Contributing to improvements in build tooling, CI/CD pipelines, testing approaches and overall engineering productivity.
• Operational Excellence: Supporting systems in production, improving observability, performance and resilience.

WHAT YOU'LL BRING

• Strong Java Expertise: Proven experience building backend systems using Java and frameworks such as Spring / Spring Boot, with deep understanding of the JVM ecosystem.
• Event & Message‑Driven Design: Experience designing systems using messaging and event‑driven approaches (e.g. Kafka or similar technologies), with a solid grounding in Domain‑Driven Design.
• Engineering Fundamentals: Strong grasp of SOLID principles, design patterns, dependency injection and persistence technologies (JPA/Hibernate).
• Problem‑Solving Mindset: Solid knowledge of algorithms and data structures, with the ability to reason about performance, complexity and scalability.
• Data Awareness: Experience working with both SQL and NoSQL data stores, understanding query patterns, indexing strategies and trade‑offs.
• Cloud‑Ready Development: Experience building software for cloud environments, including containerisation (Docker, Kubernetes) and modern deployment practices.
• Quality & Resilience Focus: Understanding of secure coding practices, fault tolerance and building reliable systems in distributed environments.
• Collaboration & Influence: Comfortable working with other engineers, sharing ideas clearly and contributing positively to team discussions.

Preferred Skills / Experience

• Experience with reactive or asynchronous programming models.
• Exposure to API technologies such as GraphQL, gRPC or API gateway patterns.
• Interest or experience in AI‑assistant development or agent‑based frameworks (e.g. LangChain4j or similar).
• Contributions to open‑source projects, technical blogs, or a strong interest in staying current with the Java ecosystem.

WHAT YOU'LL GET IN RETURN

Nottingham is one of LSEG’s established UK technology hubs, offering a compelling alternative to London with a lower cost of living, shorter commutes and a strong quality of life. The city has a growing technology ecosystem, excellent rail links to London, Birmingham and Manchester, and is well suited to engineers looking to stay close to hands‑on development while influencing complex systems used across global financial markets.

This role follows a hybrid working model, with three days per week in our Nottingham office. Office days are intentionally collaborative — focused on design sessions, problem‑solving and peer learning — while still providing flexibility for remote working and deep focus.

Career Stage

Manager

LSEG Information

Join us and be part of a team that values innovation, quality, and continuous improvement. LSEG is a leading global financial markets infrastructure and data provider. Our purpose is to drive financial stability, empower economies and enable 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 guide our decisions and everyday actions.

Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. We value your individuality and enable you to bring your true self to work to 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.

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

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