1 to 25 of 46 Java Engineer Jobs in London

Principle Java Engineer Salary to £ 7 0k + 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 … growing fast and looking for bright, dynamic people to help build their business. Role Theyre looking for a n experienced (Principle/Team Lead) Java Engineer to join their implementation team. Youll work across Camunda BPMN/DMN process automation, API integration, and microservice orchestration helping their public ...

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 ...

Senior Java Engineer - Permanent Salary: 55k-65k Working Arrangement: Fully Remote Tech Stack: Java, Spring Boot and Cloud Platforms(AWS, Azure and GCP) Desirable - Python and JavaScript I am currently working with a leading software software consultancy working with the government for a Senior Java Engineer ...

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 ...

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 ...

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 ...

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: Desktop application development, ideally with Java UI frameworks e.g. JavaFx, Swing, Qt Object-oriented design and development Multithreaded development Desired ...

Senior Java Engineer - Permanent Salary: 55k-65k Working Arrangement: Fully Remote Tech Stack: Java, Spring Boot and Cloud Platforms(AWS, Azure and GCP) Desirable - Python and JavaScript I am currently working with a leading software software consultancy working with the government for a Senior Java Engineer. … best practices in software development. Essential Proven experience in full-stack software development, including design, development, testing, and deployment. Significant hands on experience with Java, Spring Boot and Microservices. Strong understanding of Agile and DevOps practices, with a focus on continuous integration and delivery. Some proficiency ...

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/Developer (Java Mathematics) WFH/Surbiton to £50k Are you a 'mathematically minded' Software Engineer looking for an opportunity like to progress your career working on complex and interesting systems? You could be joining a global geoscience technology company within oil and gas exploration. … Software Engineer you'll join a supportive Agile team responsible for the company's highly complex web based data management platform/client portal. You'll gain exposure to the full software development lifecycle working on new features and enhancements as well as maintaining existing applications. Location/ ...

Senior Java Engineers — Contract - (Financial Services/Investment Management) Location: London (Hybrid – Ideally 2 Days Per Week) Engagement Type: Contract IR35 Status: Outside IR35 Day Rate: £600 - £700 Per Day (Monthly Pay) Our client is a leading UK investment management platform currently undertaking a major back-office transformation programme. … stage will be working on technically complex integration and platform problems with real impact across the business. Role Overview We are seeking multiple Senior Java Engineers to join the programme engineering team. You will be responsible for designing and delivering robust, high-performance Java services that integrate with ...

Backend Engineer (Java, Spring, AWS) 🚀 HealthTech Startup 📍 Hybrid-Remote: City of London (1 day per week in office) 💰 £55,000 - £60,000 Did you know conditions like Dementia and Parkinson’s disease affect millions globally, yet care is still largely reactive? We’re working with a pioneering startup … team and strong technical leadership, they’re now looking to make a key backend hire as they scale thoughtfully This is a Backend Product Engineer position with real ownership. You’ll join a small, high-calibre team where: You’ll touch everything, from core backend systems to product features ...

This is a high-impact Lead Engineer role driving the transformation of a Fixed Income technology landscape. You'll play a key role in a multi-year platform modernisation programme, building real-time, high-performance applications that support critical trading workflows. This position offers the opportunity to shape architecture … tooling Participate in code reviews and technical decision-making to maintain high engineering standards Key Requirements Proven experience building high-performance applications in modern Java - Java 11,21 Experience building in low-latency and event-driven handling large, fast-moving datasets Strong understanding of distributed systems and event ...

Java Full Stack Engineer | Consultancy (Public Sector Clients) | Up to £60k DOE Our client is a fast-growing technical consultancy known for delivering bespoke software engineering on complex, high-impact programmes across the UK public sector. Their culture is flat, collaborative, and delivery-focused. Engineers are trusted … genuinely matters. You’ll join an agile, client-embedded team delivering modern, scalable systems. Your work will include: Designing and building backend services using Java (12+) and Spring Boot Contributing to front-end development (ideally Angular, though React is welcome) Working across the full SDLC: requirements, build, test, deploy ...

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 ...

Role: Software Engineer (Java) – Up to £120,000 + Bonus + Package Salary: Up to £120,000 + Bonus + Package Location: London (Hybrid Working) Skills: Java as a main language This firm is an elite fintech company with exceptionally high standards, renowned for building cutting-edge ...

Healthcare, Technology and Services, Telecom and Media, Retail and CPG, and Public Services. Consolidated revenues as of $13 billion. Job Description- Job Title: Senior Java Engineer Must Haves- Java, Kafka, Microservices, Spring Boot, Postgres and AWS The Opportunity: We are looking for ambitious and motivated individuals … enabling customers to manage their finances and protect and build their financial futures. Purpose: To cope with our expansion, we are looking for Senior Java Engineers to join our mission and help us build a global product that's scalable, reliable and secure. You will work in tribes alongside ...

Java/Microservices/API design/LLMs/AI/Claude Code/Copilot Company: Financial Services Location: London - Hybrid 3 days per week CORE BANKING AND TRADING SYSTEMS EXPERIENCE ESSENTIAL Join a newly formed Service Modernisation & AI team driving AI-first software development in financial services. This … hands-on role modernising high-impact legacy services while building AI-powered engineering workflows. What You’ll Do Modernise critical legacy Java services using AI-driven analysis and refactoring Apply migration patterns (e.g. strangler fig) to deliver clean, modern APIs Ship improvements in fast cycles with measurable gains ...

working with a leading global financial institution seeking a Lead Java engineer to help drive the development of a large scale, low latency market data platform. This role sits within a high impact data/tech function responsible for delivering real time and historical data to trading … Mentor and develop a team of engineers across multiple locations Contribute to both hands on coding and high level system design Key Requirements Strong Java engineering background with experience building enterprise scale systems Proven experience working with market data or trading systems within financial services Experience building data ingestion ...

Senior Full Stack Engineer (Java/Python) Contract Length - 6 months Location - London (2 days onsite) We are hiring a Senior Full Stack Engineer for a high-priority, ASAP-start contract role with a leading UK tech platform. This is a hands-on senior engineering position within … contributor working across backend and frontend systems, helping shape technical direction and confidently engaging with stakeholders to influence engineering decisions. The core stack is Java-first, with increasing importance on Python-based services (including orchestration, agents, and modern AI/LLM integrations), alongside a strong React frontend. This ...

Java Developer - multiple roles £510/day Inside IR-35 6 month contract Active SC required Remote with occasional travel to London for client meetings only - expensable We are looking for experienced fullstack Java Software Engineers to support projects across UK Government and Law Enforcement. You'll work … hands-on and focused on building high quality software using modern engineering practices. What you'll do You'll design, build and maintain Java based microservices, applying test driven development and following established engineering standards. You'll work with technologies including Java, Spring Boot, Postgres, Kafka, Docker, React ...