1 to 25 of 73 Java Engineer Jobs in the UK

Principal Java Engineer (AWS/Microservices) Salary: Up to £100,000 + Bonus + Benefits Location: Coventry or Central London - Hybrid (2 days per week onsite) Working Hours: 40 hours per week - Full time Job Type: Permanent A globally established organisation is seeking an experienced Principal Java Engineer to shape the future of large-scale digital platforms used by millions of customers. This role will focus on driving engineering excellence, defining technical standards and leading the design of scalable, high-availability systems across a modern cloud-native environment. Responsibilities for the Principal Java Engineer ...

Principal Java Engineer (AWS/Microservices) Salary: Up to £100,000 + Bonus + Benefits Location: Coventry or Central London - Hybrid (2 days per week onsite) Working Hours: 40 hours per week - Full time Job Type: Permanent A globally established organisation is seeking an experienced Principal Java Engineer to shape the future of large-scale digital platforms used by millions of customers. This role will focus on driving engineering excellence, defining technical standards and leading the design of scalable, high-availability systems across a modern cloud-native environment. Responsibilities for the Principal Java Engineer ...

Senior Java Software Engineer - Java Developer, Python, AWS, MySQL, NoSql, REST APIs, Microservices, Machine Learning, Artificial intelligence (Hybrid - 3 days a week in the office - Notting Hill) Description for the Senior Java Software Engineer role:- You will be joining a fast-growing, research-driven company … machine learning techniques. My client is revolutionising their industry with a track record of building things that others have ruled out as impossible. The Java Software engineer will join a very bright, talented team of engineers with the guidance of technologists who have help build up some ...

Senior Backend Java Engineer Rate: £500 - £575 a day pay inside Location: Remote, with expectations to attend onsite meetings when required (1-2 a month) Duration: 6 months+ We are looking for a hands-on Senior Backend Java Engineer with recent experience building, testing, and deploying … whose recent experience is mainly support, coordination, architecture-only, or line management. Essential skills and experience Strong hands-on commercial coding experience with modern Java (Java v17 min, v21 LTS or newer preferred) Strong experience with Spring Boot Experience building REST APIs/microservices from scratch Strong testing ...

Java Engineer Contract Location: Hybrid (1 day per week in Farnborough, UK) Contract Duration: Initial 912 months Rate: £500 Why this role? Complex Systems: Work on large-scale, high-throughput platforms Modern Stack: Cloud-native architecture using AWS and containers Impactful Domain: Build and evolve payment-centric systems … behalf of a technology-driven organisation delivering high-scale, mission-critical platforms within the payments and data space. This role suits an experienced Java Engineer who is comfortable working in distributed systems, cloud environments, and data-heavy architectures. Youll be joining a team solving real scalability and reliability ...

Java Engineer - Payments/IFT London - 2 days in the office 6 Months Contract Inside IR35 £500 a day A top tier consultancy firm is looking for an experienced Java Engineer with a background in payments to contribute to a large payment modernisation programme. You will … compliance with ISO 20022 standards. Essential Skills 5 + years of hands on experience in a Java11 and spring boot 5 + Years in Java Engineering. Proven track record delivering large-scale systems for major banking clients. Minimum of 3 years' hands-on experience specifically with ICON IPF (Instant ...

Java Engineer - Payments/IFT London - 2 days in the office 6 Months Contract Inside IR35 £500 a day A top tier consultancy firm is looking for an experienced Java Engineer with a background in payments to contribute to a large payment modernisation programme. You will … compliance with ISO 20022 standards. Essential Skills 5 + years of hands on experience in a Java11 and spring boot 5 + Years in Java Engineering. Proven track record delivering large-scale systems for major banking clients. Minimum of 3 years' hands-on experience specifically with ICON IPF (Instant ...

This is not a bank. Not a consultancy. Not sell‐side tech. We’re hiring a Java Engineer to join a small, elite engineering team inside a buyside FX trading firm building proprietary systems that directly trade capital. Your code won’t feed dashboards or client portals … fluff. This is backend + infrastructure engineering in a production trading environment. Who This Is For We’re looking for a junior–mid level Java engineer who can: Pick up tickets independently Write clean, production‐ready code Deliver without constant oversight This is not a senior or architectural ...

Senior Java Software Engineer – Java 11+, Spring, Spring Boot, Microservices, Kafka, Akka, Docker/Kubernetes, Real-time, TDD/BDD, Reactive Programming, MongoDB Payments A Senior Java Engineer with a background in finance/payments and experience working on distributed real-time systems is sought … specialises in providing high performance technology solutions to global financial institutions (including several Investment Banks), primarily to augment their payments capabilities. As a Senior Engineer, you will join the core engineering team working on the development of their real-time payments processing platform, using a primary tech stack ...

Senior Java Software Engineer - Java 11+, Spring, Spring Boot, Microservices, Kafka, Akka, Docker/Kubernetes, Real-time, TDD/BDD, Reactive Programming, MongoDB Payments A Senior Java Engineer with a background in finance/payments and experience working on distributed real-time systems is sought ...

Java Engineer Salary to £ 45 k + Company Options Scheme Hybrid working between your home, their offices (London Vauxhall) & client sites. NB: Please only apply if you are a UK National and able to achieve SC (ideally DV) clearance i.e. you have at least 5 years residency … data and deliver citizen services. Theyre growing fast and looking for bright, dynamic people to help build their business. Role Theyre looking for aJava Engineer to join their implementation team. Youll work across Camunda BPMN/DMN process automation, API integration, and microservice orchestration helping their public-sector clients ...

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. The ideal … 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 ...

Lead Java Engineer – Low Latency, High Throughput, Front Office, LMAX Disruptor, Aeron, Real-time Streaming, SQL, Fixed Income A Lead Java Engineer with expertise in low latency, high throughput Front Office trading systems is sought after by a global Investment Bank to join their Fixed Income … real-time streaming capabilities, re-architect into a highly componentised microservices based platform, as well as long-term strategic cloud migration. As a Lead Engineer, you will have direct input into shaping this modernisation programme with regards to future-state architecture, development approach and acting as a liaison between ...

Lead Java Engineer - Low Latency, High Throughput, Front Office, LMAX Disruptor, Aeron, Real-time Streaming, SQL, Fixed Income A Lead Java Engineer with expertise in low latency, high throughput Front Office trading systems is sought after by a global Investment Bank to join their Fixed Income ...

Principal Java Engineer London – Hybrid (1 day per week onsite) Are you a senior/lead hands-on Engineer who thrives in event-driven, asynchronous environments? Do you enjoy building low-latency, high-throughput distributed systems where correctness, resilience, and performance really matter? This is an opportunity … near-zero downtime. Design and implement high-throughput, low-latency systems processing millions of real-time payment events Build event-driven architectures using modern Java and reactive frameworks Work extensively with non-blocking I/O, asynchronous flows, back-pressure, and concurrency Contribute to system and API design, focusing ...

Java Engineer Contract Location: Hybrid (1 day per week in Farnborough, UK) Contract Duration: Initial 912 months Rate: £500 Why this role? Complex Systems: Work on large-scale, high-throughput platforms Modern Stack: Cloud-native architecture using AWS and containers Impactful Domain: Build and evolve payment-centric systems ...

exciting opportunity for a Java Software Engineer has arisen with a leading semiconductor company specialising in high-performance mixed-signal processing, based in London. This is an exciting opportunity for a Java Software Engineer to design and evolve cross-platform applications, SDKs, and developer tooling. … will commit to a hybrid working model, with a minimum of one day per week onsite in the London office. Experience for the Java Software Engineer includes: 1+ years of experience with desktop application development, ideally with Java UI frameworks e.g. JavaFx, Swing, Qt Object-oriented design ...

Software Engineer - Java/Back End Hybrid - 2 days per week in the office Java, PostgreSQL, API We are looking for an experienced Back End Developer with excellent Java, PostgreSQL and API skills due to software development moving from an outsourced model to in-house. Working … highly involved with knowledge transfer, including code walkthroughs, pairing sessions, and documentation reviews with the outgoing external team. Gain understanding of the current Java application architecture - service boundaries, dependency injection patterns, build system, and deployment configuration. Design and implement new back-end features, enhancements, and bug fixes in Java ...

Senior/Lead Software Engineer (Java) Permanent Manchester-based (Hybrid with 3 days in the office) Salary DOE - £95,000 - £145,000 + attractive benefits + bonus The client is continuing to scale their engineering presence in the UK as part of a broader US-UK expansion. They … first hires for a team that is expected to grow quite quickly. This is a role for a Senior Software Engineer with a focus on Back End development with Java as the primary language. It involves improving and extending existing systems, with the possibility of building new interfaces ...

Cleared Data Engineer - Java, Spring Boot, Docker Hybrid - London (2-3 days onsite) £560 per day (Inside IR35) 12-Month Contract (Initial) We're currently looking for an experienced SC Cleared Data Engineer to join a high-profile programme based in London. Please note: Active Security Clearance … essential Must have 5+ years continuous UK residency (required for clearance eligibility) Key Skills & Experience Strong experience as a Data Engineer Proficiency in Java Hands-on experience with Spring Boot Experience working with Docker/Containerisation Experience building and maintaining scalable Data Pipelines Strong understanding of Data Processing ...

Java 8 Software Engineer | £500 – £550 | Inside IR35 | 6 Months | Hybrid Remote We’re recruiting for experienced Java Engineers with strong experience working with Legacy Java versions (Ideally Java 8). This 6-Month contract is determined as Inside IR35 and is offered … Hybrid remote basis requiring 1/2 days per week of onsite work in Swindon or London. Key Requirements Strong commercial experience with Java 8 or similar legacy Java frameworks Solid skills in SQL, Spring Boot, and Hibernate development practices Proven ability to build microservices and reliable RESTful ...

Software Engineer | Java | Bristol | Hybrid We're supporting one of our best Tech for Impact clients who are making a genuine difference to people's lives and their Engineering team is a big part of how they do it. With around 65 engineers across Bristol and London, they … thousands of customers moving, and they are the nicest people ever! The role We're supporting the hire of a mid-level Software Engineer (3-5 years ish experience) to join an established, cross-functional product team. You'll work in a genuinely agile environment, shipping real software, embracing ...

Software Engineer (Java) To support their aggressive growth targets, my client have identified the need for bespoke systems to streamline and automate their existing production processes. Successful applicants have the exciting task of forming their in-house Software Department, with the key target to develop the production system … software Contribute to all stages of the development lifecycle Define application objectives and functionality Create detailed design documentation Propose and implement changes to current Java infrastructure Conduct software analysis, programming, testing and debugging Prepare and produce end user documentation Support continuous improvement, investigating alternative technologies, and presenting for architectural ...

Java Software Engineer – Defence, Cyber & Intelligence | Full-Time | eDV Clearance Required We are seeking Software Engineers at all levels to join a leading aerospace and defence organisation, delivering mission-critical software for high-impact programmes in the Defence, Cyber, and Intelligence sectors. You'll work on cutting-edge … Responsibilities: Software design, development, and debugging on secure systems Creating and maintaining test frameworks (e.g., JUnit 5) Developing in Linux environments with modern languages (Java, Python) Working with Agile/SCRUM practices and CI/CD pipelines (GitLab) Contributing across the software development lifecycle from requirements to deployment Tech ...

Java Software Engineer - Payment Processing This is a fantastic opportunity to grow and evolve within a Software Engineering function with the opportunity to improve the software development process, methodologies and tools through applied experience, automation and simplification. This global payment processing companyare building the next generation of capabilities … issues, and contributing beyond assigned tasks - adjusting priorities when appropriate. What You Will Have 4+ years in a Software Engineering position focused on Java development. BS or MS in Computer Science or related field. Proficiency in either Spring Boot or J2EEis highly desirable. Able to utiliseAI-driven development tools ...