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    Founding Engineer, Payments Platform, Mobility Startup

    Founding Engineer - vehicle auto-pay startupReady to apply Before you do, make sure to read all the details pertaining to this job in the description below.Location : London, Office-based/HybridSalary : to £160k + 20% bonus + meaningful equityThis is a true greenfield build. The Founding Engineer ...

    Platform Engineer III Core Platform

    Overview Fanatics Betting & Gaming (FBG) is seeking a Level 3 Platform Engineer to join our Platform Engineering team. This role sits within our Platform & Architecture group, focusing on infrastructure and deployment capabilities that support our product and engineering teams. As a Level ...

    Senior C# Developer .Net Core AWS

    Overview Senior C# Developer / Software Engineer (C# .Net Core AWS) Sunderland / WFH to £75k Do you have strong C# .Net Core backend development skills? You could be progressing your career in a senior, hands-on C# Developer role at a growing games / gambling site, whilst enjoying a range o ...

    Solution Architect (SFIA 5)

    Requirements You will have extensive commercial experience in the many of the following: ,Technical & Solution Design ,Open Source software ,Cloud computing (ideally AWS) ,Security best practices ,IAM, OAuth, Cognito, OIDC - all advantageous , ...

    Senior Software Engineer, Identity & FinCrime | FinTech

    Starling is seeking passionate engineers for its Customer Identity & Fincrime team in Cardiff. The ideal candidate will work in a hybrid model and gain hands-on experience with Java, AWS, and Kubernetes. This role emphasizes clean coding and developing solutions to protect customers from financial crimes in a ra ...

    Senior Software Engineer, Identity & FinCrime | FinTech

    Starling Bank is looking for passionate engineers to join their Customer Identity & Fincrime team in Manchester. You'll work in a hybrid model and gain hands-on experience with Java, AWS, and microservices in a rapidly evolving FinTech environment. This role emphasizes collaboration, clean coding practices, and ...

    Applied AI Engineer in London Ameba Systems Ltd

    Qualifications Desirable Undergraduate or Master's degree in Computer Science (or related fields). Skills Experience with Kotlin or Java, Python, TypeScript , AWS, and Docker. Ability to design scalable and efficient systems. Experience working closely ...

    Java Microservices Developer Spring Boot, Cloud & CI/CD

    Opus Recruitment Solutions is seeking a skilled Java Developer in Newcastle upon Tyne to build modular and maintainable services using JDK 11+ and Spring Boot. You will collaborate with cloud teams to deploy secure solutions in AWS environments. The ideal candidate will advocate for good development pr ...

    Applied AI Engineer — Build Scalable, User Focused AI

    Qualifications Desirable Undergraduate or Master's degree in Computer Science (or related fields). Skills Experience with Kotlin or Java, Python, TypeScript , AWS, and Docker. Ability to design scalable and efficient systems. Experience working closely ...

    DotNet Developer – C#, .NET Core, SQL | AWS exposure

    Java Script Works is looking for a passionate .NET Developer to join their team in Horncastle, United Kingdom. This full-time position involves problem-solving using the latest technology and requires strong skills in C#, .NET Core, and SQL, with exposure to JavaScript, TypeScript, and AWS being desirable. The r ...

    Frontend Engineer

    Frontend Engineer - React / WebGL / TypeScript Are you a frontend engineer looking to work on cutting-edge cloud security solutions? My client is revolutionising cloud infrastructure protection with next‑gen technologies, and they want you to help shape the future of cloud security. What ...

    Senior Java Engineer — AI Driven Fintech, Hybrid Cardiff

    IntaPeople: STEM Recruitment is seeking a Senior Java Developer in Cardiff, focusing on agentic coding and AI development. This hybrid role requires strong Java experience and offers opportunities within a high-performing team. The ideal candidate will have at least 5 years in Java development, particu ...

    Java Full Stack Engineer Capital Markets Growth (London)

    Mandarin Recruitment is excited to offer a Java Developer (Full-Stack) role in a London-based Capital Markets company. The ideal candidate will support UK operations, contributing to the company’s global expansion while leveraging expertise in Java, concurrency, and distributed systems. The position re ...

    Low Latency Java Engineer for High Performance Trading

    A financial services company in Greater London is seeking an experienced Low Latency Java Engineer to join their team for critical Front Office projects. The role involves designing and developing high-performance applications while collaborating across teams. Strong Core Java and multithreading skills are essen ...

    Low Latency Java Engineer for Front Office Trading

    Thomson Keene is seeking a Java Developer in Greater London to join a front office technology team. The role involves gathering business requirements, designing and building low-latency trading systems, and developing high-performance applications. The ideal candidate will have 3-8 years of experience ...

    Senior Java & AI Engineer Fintech Payment Product Remote

    Gravitas Recruitment Group (Global) Ltd is seeking a Senior Java Developer / AI Engineer to design and build payment products for a Fintech Challenger Bank in Central London. The role is focused on hands-on Java and Spring Boot development within the fintech payment domain. The ideal candidate will pos ...

    Senior Java Engineer: AI Driven, High Throughput Systems

    mthree is seeking an Expert Systems Developer to lead the architectural evolution and scaling of a high-throughput platform for a tier-one global financial institution. This role involves driving automation, influencing system design, and ensuring engineering excellence through rigorous standards and mentorin ...

    Contract Java Engineer Belfast Hybrid (Inside IR35, £550PD)

    Company & Employer Company: JR UKClient / Employer: Adepta Partners Limited Overview Java Engineer‑Consultant role in Belfast, Hybrid – £550 per day (Inside IR35). We are hiring 2 contractors to support a high‑performing engineering team developing large‑sca ...

    Senior Java Engineer: Low Latency SOR for Equities

    Citi is looking for a Senior Java Developer specializing in Smart Order Routers to join their Equities Electronic Trading team in Belfast. As a VP-level position, you will be responsible for driving technical implementation of a core low-latency execution platform using high-performance Java and microservices ...

    Backend Engineer (Java/Spring) for Global Ecommerce Platform

    JD.com is seeking experienced professionals to build and maintain backend systems for its Joybuy platform located in Greater London, England. You will guarantee high performance, availability, and security in a fast-paced e-commerce environment. The ideal candidate should have a Bachelor’s degree in a ...

    Senior Java Full Stack Engineer Onsite Contract (IR35)

    Buzzworks Business Services Pvt. Ltd. is offering a Java Full Stack replacement role in Bournemouth. The successful candidate will have at least 5 years of relevant experience and will be expected to work onsite for 5 days a week. This contract role falls inside IR35 and caters to the consulting sector ...

    High Performance Java Engineer for Low Latency Trading

    A leading investment bank is seeking a experienced Low Latency Java Developer to design and develop high-performance applications for their Front Office Algo and eTrading projects. The ideal candidate will have strong Core Java skills and knowledge of multithreading, with an eagerness to learn and collaborate ac ...

    Senior Principal Backend Engineer (Java/Kotlin) API & Edge

    Anaplan Inc is seeking a Sr. Principal Engineer to join our team in Manchester, UK. The successful candidate will lead the design and delivery of platform capabilities, including the architecture of API gateways and backend engines. The ideal candidate will have extensive experience in Java/Kotlin and ...

    Mid Level Core Java Engineer: Build Scalable Systems

    Fusion Health is looking for an experienced Java Engineer to expand their core engineering team based in London. The ideal candidate has over 3 years of experience in Java programming, strong knowledge of algorithms, data structures, and web architectures. You will contribute to all phases of the devel ...

    Principal Java Engineer – Payments & Cloud Lead (Hybrid, 6m)

    Mindera is seeking a Principal Java Engineer in Greater London, England, for a 6-month contract outside IR35. You will be working in a friendly and welcoming team focused on developing secure, high-volume payment services. The role includes leading technical discussions, developing integrations with pa ...

    Senior Java Engineer — HealthTech Scale up, NHS Impact

    Halian | Managed Services, Recruitment Agency & Contract Staffing is seeking two Senior Java Developers to join a fast-growing HealthTech scale-up. You will design and develop scalable Java-based microservices and work with a high-performing team to shape the platform's future. The role involves collab ...

    Senior Java Trader Tech Engineer – Front Office (Hybrid)

    Harrington Starr is hiring a Java Electronic Trading Engineer to join their London team. You will develop low-latency crypto trading systems and collaborate with front office traders and product teams. The role requires over 10 years of experience in Java development, particularly in a front office environment. ...

    Senior Java Engineer — Remote, Spring Boot, Client Facing

    Your Remote Tech Recruiter is engaged with an established Tech Consultancy who are looking to recruit Senior Developers with experience building applications in Java. They're a global organisation (operate across the US, UK, Europe and Asia), with a focus on delivering end-to-end digital transformation ...

    Lead QA Engineer (Java) – Automation, CI/CD & Security

    A leading genomic medicine organization in the UK is seeking a skilled Lead QA Engineer to enhance quality assurance across multiple squads. The role requires deep expertise in Java and Playwright, focusing on designing automation test frameworks and mentoring teams. The position involves planning QA strategies ...

    L2 Support Engineer: Java/DB, Weekend TOIL – London

    N Consulting Ltd is seeking an L2 Support Engineer based in London, United Kingdom. This contract position requires strong Java and database skills, along with good communication abilities. Candidates will be responsible for providing L2 support and will participate in weekend shifts, compensated with time off i ...

    Lead Java Backend Engineer for High Performance Trading

    CoinDesk is seeking a Lead Engineer to drive backend development for Bullish Exchange. This technical role involves designing high-performance trading engine components and mentoring a distributed team mainly based in Hong Kong and Singapore. The ideal candidate should have over 12 years of Java backen ...

    Lead Backend Engineer – Trading Platform, Low Latency Java

    About Bullish Bullish is an institutionally focused global digital asset platform that provides market infrastructure and information services. These include: Bullish Exchange – a regulated and institutionally focused digital assets spot and derivatives exchange, integrating a high‑ ...

    Backend Java Engineer — Public Sector Impact, Flexible Work

    IBM is looking for a Java Developer in the East Midlands to design and maintain backend applications using Java/JEE. Ideal candidates will have skills in Java frameworks like Spring, understand DevOps practices, and possess strong communication abilities. This role includes responsibilities such as troubleshooti ...

    Senior Java Backend Engineer — Spring Boot, REST & Kafka

    Rockstar Games in Leeds is seeking an experienced Java backend developer to design and implement solutions for fast-paced game development. The ideal candidate will have over 5 years of professional experience in Java and strong expertise in Spring Boot and JPA/Hibernate. Responsibilities include collaborating w ...

    Senior Backend Java Engineer Finance Tech, Hybrid Role

    Citigroup Inc. in Belfast is seeking Experienced Backend Java Developers for positions ranging from Assistant Vice President to Senior Vice President. The role focuses on contributing to application systems development and programming activities. Join a business casual workplace with a hybrid model, co ...

    Senior Java/Kotlin Engineer — AI Driven, Hybrid Role

    An innovative AI consulting partner in the UK seeks a skilled developer to join their agile team. The role involves developing RESTful Java APIs, collaborating with interdisciplinary teams, and advocating for best practices in software engineering. Ideal candidates will possess strong API development skills in J ...

    Backend Engineer – Java/Spring Boot & Python (Hybrid London)

    Methods Business and Digital Technology Ltd is seeking a Back-end Developer specializing in Java Spring Boot and Python to join their private sector team in London. This hybrid role requires 3 days on-site each week. The successful candidate will lead the rebuild of core architecture, optimize technical connecto ...

    Senior C++/Java Engineer — Own Core Platform Components

    LSEG in Greater London is seeking a Senior Associate responsible for delivering high-quality software solutions using C++ and Java. Candidates should possess over 8 years of experience, strong software engineering skills, and a solid understanding of system integration. The role offers tailored benefit ...

    Full Stack Engineer (Python and/or Java) – VP

    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 ...

    Low Latency Java & Kafka Engineer — Real Time Payments

    J.P. MORGAN is seeking motivated Java engineers to join its Global Liquidity and Cash Management Technology team in Bournemouth. Successful candidates will develop innovative technology for the Corporate & Investment Bank's Payments business, managing client liquidity in real-time. Responsibilities include desig ...

    Senior Java/Kotlin Engineer — AI Driven, Hybrid Role

    An innovative AI consulting partner in the UK seeks a skilled developer to join their agile team. The role involves developing RESTful Java APIs, collaborating with interdisciplinary teams, and advocating for best practices in software engineering. Ideal candidates will possess strong API development skills in J ...

    Full Stack Engineer (Python and/or Java) – VP

    Department Overview Equities Technology at Citi is undertaking a bold, multi‑year transformation to build a best‑in‑class global platform across execution, prime, clearing and cross‑product margining. We are re‑engineering our technology estate to achieve world‑leading performance and resiliency, ...

    Senior Java Engineer (Equinox) – Equity Derivatives Tech – VP

    For additional information, please review .**Senior Java Engineer (Equinox) – Equity Derivatives Tech – VP**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+ countr ...

    Senior Java Engineer (Equinox) – Equity Derivatives Tech – VP

    Senior Java Engineer (Equinox) – Equity Derivatives Tech – VP 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 c ...

    Lead/ Staff Backend Java Engineer in London Mindera

    Lead / Staff Backend Java Engineer London, United Kingdom Posted 11 months ago Tech stack Backend Java We’re looking for a Staff Java Engineer to join our growing company. You’ll play a key technical leadership role, working closely with architects, ...

    Java Lead eSoftware Engineer Equities Algo Trading VP

    Java Lead eSoftware Engineer - Equities Algo Trading - VP LONDON, LONDON, United Kingdom Job Information Job Identification Job Category Software Engineering Business Unit Corporate Sector Posting Date 05/12/2026, 10:42 AM Location ...

    Hybrid London: Senior Java Engineer, Low Latency Trading

    A leading financial technology firm in London is seeking Senior and Principal Java Developers to work on high-performance trading systems. Ideal candidates will possess strong Java skills and experience in low-latency applications. This hybrid role allows for both remote work and on-site collaboration in Canary ...

    Low Latency Java Engineer FIX Connectivity (Hybrid, Bonus)

    A global technology-driven financial services organisation is seeking an experienced Java Engineer in Belfast. This hands-on role focuses on designing and enhancing low-latency connectivity services for clients and internal systems. Candidates should have strong Java experience, exposure to electronic trading en ...

    Full Stack Engineer (Python and/or Java) – VP

    Full Stack Engineer (Python and/or Java) – VP page is loaded## Full Stack Engineer (Python and/or Java) – VPApplyremote type: Hybridlocations: London United Kingdomtime type: Full timeposted on: Posted Todayjob requisition id: Engineer the future of global finance. At Citi, our Tech team doesn’t just ...

    Senior Backend Engineer – Java, Spring Boot, Docker, Kubernetes

    Zaizi is seeking a Senior Software Developer in Greater London. The ideal candidate will have extensive experience in Java and Agile methodologies, leading teams, and developing digital solutions. A focus on continuous improvement and user experience is vital. Join a supportive work culture where innov ...

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      Fullstack Software Engineer Java React Aws Jobs in United Kingdom Job Search Guide, Trends and Insights