1 to 25 of 59 Senior Java Engineer Jobs in London

Senior Java Engineer - FX eTrading** (Contract) Duration: 12 Months (Possibility for extension) Location: London/Hybrid (4 days per week on site) Rate: A highly competitive Umbrella Day Rate is available for suitable candidates Role Profile As a Senior Java Engineer, you will play … into robust technical designs. Write clear specifications and implementation plans. Skills & Experience: Professional Experience: Strong background in software engineering with deep expertise in Core Java, multithreading/concurrency, and performance tuning. Low Latency Expertise: Proven experience in low latency design and patterns that enhance trading performance. Distributed Systems: Experience ...

Senior Java Engineer (Kafka, Kubernetes, SpringBoot) - Banking - London/Hybrid Daily rate: €600 - €700 (inside IR35) Duration: 12 months Start: ASAP My client is looking for a Senior Java Engineer to join on a contract basis. They need someone with strong core Java … stages of systems development covering design, development, testing, live implementation and post‐implementation support. Strong hands‐on Object‐Oriented Design skills. Strong core Java programming skills. Experience developing services/micro‐services in Java. Experience developing containerised services using Docker and Kubernetes. Hands‐on SpringBoot skills. Experience developing ...

Senior Java Engineer (AWS, REST, SOAP) - Hybrid - Sussex Daily rate: £500 - £700 (inside IR35) Duration: 6 months Hybrid: 2 days per week (Tues + Wed) Start: ASAP My new client is looking for a highly skilled Senior Java Engineer to join their engineering team. … architectures, contribute to API and microservices development, and help drive best practices across the engineering organisation. Key Responsibilities Design, develop, and maintain high‐quality Java applications using Spring Boot. Build and optimise RESTful APIs and contribute to GraphQL service development. Develop cloud‐native solutions using AWS services such ...

Global technology & software product company operating in the observability and monitoring space, is looking for a Senior Java Engineer to join their Platform Team in London . You'll help build the distributed services that sit at the core of their product, ingesting and transforming data … Software Engineers, who value technical coding ability, ownership & delivery - no client work, no consultancy, no "Project management" of software - just pure, coding ability with Java, Data & complex, distributed global software systems required! Location: London (Old Street/Shoreditch). Salary: £120,000 to £125,000 basic, plus an extensive ...

Senior Backend Engineer (.NET/Java Microservices) Contract: Inside IR35 Duration: 6 Months+ Hybrid - 2 days per week on site in London We're seeking a Senior Backend Engineer to design, build and enhance scalable backend services and APIs within a complex enterprise environment. … delivering modern microservices while contributing to technical design and engineering best practice. Key Responsibilities Design and develop backend services using C#/.NET and Java (Spring Boot) . Build and support REST APIs and microservices. Contribute to architecture, technical design and system integration. Troubleshoot, optimise and support production systems. ...

Role Overview We are looking for a talented and passionate Senior Lead Java Engineer to join the SwapClear Interfaces development team, part of the SwapClear Technology function supporting the LCH Swap Clearing business. The team is responsible for designing, building, and supporting critical interfaces and systems that … facilitate the clearing operations. This Senior Lead Java Engineer role will focus on leading the team in designing, building and maintaining Java‐based applications and their related systems that are critical to the SwapClear Clearing operations. You will be worked in a scrum team and work ...

Salt Digital Recruitment is seeking a Senior Java Engineer to join a hybrid team in Greater London. The role demands expertise in Java and AWS, with a daily rate of £500 to £700 depending on experience. The ideal candidate will contribute to cloud-native architecture ...

GlobalLogic is seeking a Senior Java Engineer to design, develop and maintain high-performance, scalable applications within a distributed microservices ecosystem. You will work across Java/JEE, Spring, REST/gRPC APIs, and cloud platforms (AWS/Azure/GCP), mentor engineers, participate in code ...

Salt Digital Recruitment is seeking a Senior Java Engineer for a contract role based in London/Hybrid. You will work as part of an Agile team to migrate a legacy application to a new event-based architecture, handling server-side deployment effectively. The ideal candidate … strong core Java expertise and experience with SpringBoot, Docker, and Kubernetes. This position requires strong communication skills and the ability to motivate and mentor junior staff. The daily rate is €600 - €700, with a duration of 12 months. #J-18808-Ljbffr ...

Senior Full Stack Software Engineer (Java + React) Location: London, United Kingdom About the Role This role focuses on full stack development using Java and React. Tech Stack User Interface Full‐stack React Software Engineer Java Qualifications Information Systems, Engineering, or related technical degree … minimum of 5‐8 years of experience in application development Strong Java/.NET Core skills with experience in concurrent and distributed systems Basic knowledge of User Interface design Compensation & Benefits Competitive compensation Full time role Visa sponsorship not provided #J-18808-Ljbffr ...

/Senior Backend Engineer (Java) Remote About Revolut People deserve more from their money. More visibility, more control, and more freedom. Since 2015, Revolut has been on a mission to deliver just that. Our powerhouse of products including spending, saving, investing, exchanging, travelling, and more help … world, they bring sharp thinking, speed, and a focus on meaningful impact to everything they do. We re looking for a Mid/Senior Backend Engineer to join a team that keeps frameworks lean and focuses on what matters: clean, maintainable code, shipped fast with ...

Role: Senior Java/Python Engineer Client: Financial Systems Location: London (Hybrid) Compensation: Up To £130,000 P/A + Comps The role A high-performing global team is looking for an experienced Java/Python Engineer to help build and enhance critical backend … role focused on scalable engineering, distributed systems, large datasets and delivering robust solutions within a fast‐paced financial environment. Responsibilities Building and enhancing Java and Python-based backend services and risk data pipelines Working with complex risk and trading datasets to support analytics, reporting and downstream processing Developing APIs ...

Citi is seeking a Senior Java Developer to drive the design, development, and delivery of risk management software within a global technology team. The role emphasizes delivering scalable Java-based applications in a complex financial domain and collaborating across engineers, analysts, and support staff. The position requires … strong Java expertise, experience with Spring, cloud-native patterns, and a sharp focus on quality through Agile and TDD. #J-18808-Ljbffr ...

Bullish, Inc. is seeking a Senior Engineer for Trading Product Engineering in London. You will design and deliver low-latency Java code powering the Bullish Exchange, working across a hybrid architecture that blends a Central Limit Order Book with proprietary market making. You will optimize performance, expand ...

Zilch is seeking a Senior Java Software Engineer in London to help build from the ground up, focusing on scalable backend systems and high-quality code. You will work in a fast-paced, collaborative team to deliver secure, high-performance services and APIs that power our payments ...

United States Digital Space LLC is seeking a talented Senior Lead Java Engineer to join the SwapClear Interfaces team within the SwapClear Technology function. You will design, build, and maintain Java-based applications essential to SwapClear Clearing operations. In a Scrum/Agile environment, you will ...

Citi in London is seeking a Senior Java Developer for the Derivatives Credit Risk Technology Team. You will drive development across the full software lifecycle and collaborate with a global team to deliver risk management solutions used in counterparty exposure, margin, and analytics. Ideal candidates bring strong Core … Java, Spring, and experience in capital markets with a focus on test-driven development, scalable architectures, and leadership potential for future team roles. #J-18808-Ljbffr ...

Deloitte - Recruitment is looking for a highly skilled Senior Java/Python Engineer for a contract opportunity in London, United Kingdom. The role will involve designing and maintaining cloud-based applications while collaborating with cross-functional teams. The ideal candidate must have expertise in Java ...

Hunter Bond is seeking a Senior Java/Python Engineer in London to help build critical backend platforms for financial systems. You will be part of a high-performing team focused on scalable engineering, supporting complex data workflows. The ideal candidate should have strong experience with Java ...

Senior Software Engineer II - Contacts Team - Java Full-time Compensation: GBP 105,000 - GBP 130,000 - yearly Wise is a global technology company, building the best way to move and manage the world’s money. Min fees. Max ease. Full speed. Whether people and businesses are sending … want to hear from you! You get things done You have experience working with large scale distributed systems You have years of Java 8+ knowledge You have experience working with relational and non-relational databases, query optimisation and designing schemas You have a strong product mindset and passion ...

London Stock Exchange Group (LSEG) is seeking a Senior Java Developer to join our team working on FX trading systems. You will build and enhance backend services, focusing on performance, reliability, and scalability. You will collaborate with engineers, product partners, and operations to deliver robust software … fast-paced environment. Ideal candidates have extensive Java backend experience, strong understanding of performance and concurrency, and familiarity with Git and CI/CD. #J-18808-Ljbffr ...

London Stock Exchange Group (LSEG) is seeking a Senior Java Developer to join our FX trading support team in London. You will help develop and improve mission-critical backend systems, focusing on speed, reliability and scalability, in collaboration with engineers, product partners, and operations. The role emphasizes ownership ...

Perkbox, Sweatcoin, Coinbase, and Globetopper rely on Runa to facilitate instant, flexible global payouts to tens of millions of consumers. The Role As a Senior Software Engineer, you will be responsible for architecting, implementing and deploying software services from end to end. You'll produce clean, scalable … architecture running on containerised cloud infrastructure, whilst guiding and mentoring more junior engineers in the team. Our Tech This role will be building with Java and Kotlin, leaning heavily on event-driven architectures to move money reliably at scale. Services will run in containers on EKS, backed by both ...

London Metal Exchange (LME) is seeking a Senior Engineer in London to join the IT team. You will design, build, and operate scalable services across frontend, backend, data, and infra to support trading and enterprise platforms. You will collaborate with product teams, vendors and apply automated testing …/CD, and observability. Proficiency in Java/.NET and Python, plus Docker and Kubernetes, is required. This is a high-impact role offering leadership potential within financial services tech. #J-18808-Ljbffr ...

Position Overview Senior Software Engineer – Jamf Insights Web Application (Hybrid, London, United Kingdom) What you’ll do Lead technology transition and build skills in a recognized tech company. Work on the web application that powers Jamf Insights for admins and Managed Service Providers (MSPs). Help create ...