1 to 25 of 34 Java Engineer Jobs in London

Role: Lead Java Engineer - Risk & Compliance Platform Location: London (hybrid) Salary: £125,000 - £150,000 + Bonus Are you an exceptional Java engineer ready to step into a true leadership role within one of the most critical platforms in global banking? We're working with … tier financial institution who are expanding their Risk & Compliance Platform Team and are looking for a Lead Engineer to help shape and deliver large-scale, business-critical systems across Market and Credit Risk. You'll be responsible for designing, building, testing and implementing high-quality software across the full ...

Senior Core Java Engineer - Low-Latency Trading Salary: Up to £125,000 + bonus + benefits Location: City of London (3 days onsite) Build ultra-low latency systems at the heart of global FX trading! This is an opportunity for a Senior Core Java Engineer … fast-paced financial environment, this is the role for you. What you'll be doing Design, build and optimise low-latency, high-throughput Core Java trading systems Own and drive performance improvements across critical components Contribute to the architecture and evolution of a world-class FX trading platform processing ...

Software Engineer (Core Java) - Low-Latency Financial Trading! Salary: £70,000 - £90,000 + bonus + benefits Location: 3 days onsite, City of London Looking to enter the fast-paced environment of financial trading? Do you have experience working in Core Java, high-throughput environments? This role … work on cutting-edge trading solutions! This highly respected financial institution is expanding its London office and is on the lookout for a Java Software Engineer to contribute to the development of their world-class FX trading platform. As a Java Software Engineer, you will: Collaborate ...

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 ...

Principal/Senior Java Engineer – Ultra Low Latency Trading Systems Location: London (Hybrid) The Opportunity A leading global quantitative trading firm is seeking an exceptional Java Engineer to join one of the highest-performing engineering teams in systematic trading. This firm operates at the forefront … hardware level, and partnering closely with quantitative researchers to deliver production-grade trading platforms. Key Responsibilities Design and develop high-performance Java trading infrastructure Build systems processing millions of events per second with deterministic latency requirements Optimise JVM behaviour, memory management, and concurrency models Identify and eliminate performance bottlenecks ...

Senior Java Engineer – Reactive (Spring WebFlux) London – Hybrid (1 day per week onsite) Are you a senior, 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 … 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 ...

Senior Full-Stack Engineer (Java & Python) We are seeking a high-impact Senior Full-Stack Engineer to join a growing technology team for a leading investment house supporting market data services within a regulated, enterprise environment. This role sits at the intersection of data engineering, full-stack … MUST have 5+ years experience in data or software engineering within financial services or a similar regulated industry. Strong full-stack experience with Python , Java (Spring Boot) , React , SQL, and relational databases. Hands-on experience with modern data engineering tools (e.g. Airflow, Spark, Kafka, dbt, Snowflake or similar). ...

Software Engineer (Java/Full Stack) | Contract-to-Perm | London Location: Liverpool Street, London (Hybrid - 2-3 days onsite) Rate: £550 per day (Inside IR35) Type: Contract-to-Permanent Start Date: Early to Mid-April 2026 The Opportunity We are looking for a versatile Software Engineer … long-term stability or a permanent developer looking to "test-drive" a major modernisation project before committing. The Role As a Full Stack Engineer, you will design and improve software that delivers business-critical capabilities for both customers and internal colleagues. You will work closely with stakeholders-including Sales ...

Lead Software Engineer – Java Microservices | London (1 day per week on-site) | £74,000 – £92,000 + Package We’re partnering with a leading UK bank to recruit a Lead Software Engineer with strong Java and microservices expertise. This is a hands-on role building high … building robust microservices that support high-traffic user experiences, serving thousands or millions of concurrent users. What We’re Looking For Proven experience developing Java microservices for high-traffic applications (retail, e-commerce, media, or streaming platforms). Hands-on experience with the full software lifecycle in agile environments ...

Senior Software Engineer/Developer (Java AWS Kafka) London/WFH to £140k Are you a Java technologist who enjoys building systems from scratch? You could be progressing your career, in a senior, impactful role at a global, cloud-native, prime broker that is replacing the legacy … system, designed for today's complex global markets. The company is experiencing great success and is expanding into the UK. As a Senior Software Engineer you will take ownership of building a brand new Futures Trading platform for the UK, primarily using Java with a focus on backend ...

Senior Full-Stack Engineer (Java & Python) We are seeking a high-impact Senior Full-Stack Engineer to join a growing technology team for a leading investment house supporting market data services within a regulated, enterprise environment. This role sits at the intersection of data engineering, full-stack ...

Java Software Engineer – Data Engineering Up to £70,000 + bonus and benefits 4:1 hybrid in office – City of London Quant Capital is hiring for a small, high-performing market maker in London. This is a junior-to-mid role focused primarily on Java development, with … PostgreSQL. This is a growing team focused on data ingestion and building tooling for the wider firm. What you’ll do: Build and enhance Java backend services (APIs, batch jobs, integrations) used across the business Write clean, testable code with solid engineering discipline (testing, code review, debugging, production support ...

Role Senior Java Software Engineer Salary £80,000 to £95,000 base salary Location London Paddington Hybrid 3 days a week The Company WeDo is working with a global fintech organisation operating at significant scale within the payments space. The business builds and runs mission critical platforms responsible … architectural ownership, and a strong understanding of the business impact of their work, without stepping into people management. Requirements - Strong backend engineering experience using Java and Spring Boot - Proven experience working with event driven architectures and Kafka - Experience designing and operating systems in AWS environments - Exposure to services such ...

Role: Software Engineer (Java) Level: Associate Manager and Specialist Location: London, Bristol, Manchester and Birmingham Salary: Competitive salary and package (Depending on level of experience) Please Note: Any offer of employment is subject to satisfactory BPSS and SC security clearance which requires 5 years continuous UK address history ...

Senior Java Developer - Financial Services - Permanent - London - Hybrid About the role: We are seeking a Senior Java Developer to join a high-performing electronic trading technology team building low latency, highly available trading systems across multiple asset classes. This role is ideal for an experienced engineer … paced, real-time trading environments and enjoys designing, optimising, and scaling mission-critical distributed systems. You will design and build fault-tolerant, event-driven Java services supporting electronic trading platforms. The position involves performance optimisation, system stability ownership, and close collaboration with global Architecture, DevOps, and Product teams. Essential ...

Full Stack Software Engineer React Typescript Java Banking London This is a new and exclusive opportunity for a Full Stack Software Engineer who is primarily front office focused with React (75%) and Java (25%) to join this thriving front office derivatives team in this investment bank … Role details Title: Full Stack Software Engineer Technical focus - React (75%) and Java (25%) Employer: front office banking derivatives Permanent role salary £85- £125,000 plus bonus and pension Location: London City and home working hybrid 50/50% Technical stack: primarily Front end React/typescript node.JS ...

Java Full Stack Engineer - Consultant/Senior Consultant Location: UK (Hybrid Remote with client site travel) Salary: £45,000 - £75,000 + Benefits Security Clearance: SC cleared/eligible Hybrid working | UK-wide Help transform public services through modern engineering. We're supporting a leading digital consultancy … hiring Java Full Stack Engineers who want to use technology to improve outcomes for UK public sector organisations. You'll work closely with clients, engineers and delivery teams to build modern, scalable services that make a real difference to citizens and frontline staff. The Role As part ...

Junior Core Java Developer - High-Throughput, Low-Latency Financial Trading! Salary: £60,000 - £65,000 + bonus + benefits Location: 3 days onsite, City of London Are you looking to kick-start your career in a fast-paced environment? Do you have a year or two of commercial experience … passion for Java development? This role is your chance to join a leading Asian FX trading firm and work on cutting-edge trading solutions! This highly respected financial institution is expanding its London office and is on the lookout for a Junior Java Developer to contribute ...

Senior Java Full Stack Software Engineer - Public Sector Digital Transformation Location: UK (Fully Remote) Type: Permanent Security Clearance: SC cleared/eligible Use your engineering expertise to improve services that millions rely on. We're hiring a Senior Software Engineer to join a mission-driven digital consultancy … engineering, enjoy mentoring others, and want your work to have real public impact, this role is for you. The Role As a Senior Software Engineer (Full Stack) you'll design, build and deploy scalable, secure and well-tested software solutions. You'll contribute to architecture decisions, champion development best ...

Lead/Senior Software Engineer for 12 month contract on site in London. Working for a Big 4 professional services firm delivering software projects. Java, Python, Cloud Native AWS, AI, DevOps, CI/CD - Jenkins/GitLab Lead/Senior Java/Python EngineersBig 4 Consultancy … month contract On site in London Location : London (5 days in office) Duration 12 months Key Skills Proficient in Java/Python concepts and proficient advanced experience. Hands-on practical experience delivering system design, application development, testing, and operational stability, particularly in cloud environments. Advanced knowledge of cloud-based ...

Lead/Senior Java/Python Engineers Big 4 Consultancy 12 month contract On site in London Location : London (5 days in office) Duration 12 months Key Skills Proficient in Java/Python concepts and proficient advanced experience. Hands-on practical experience delivering system design, application development, testing ...

Title: Java Developer Location: UK Experience: 2–5 years Education: Bachelors in Science (IT/Computer Science/Engineer) Employment Type: Full-Time UK based candidates only. Job Summary: We are seeking an experienced Java Developer with 2 to 3 years of hands-on experience in building … applications using Java , Spring Boot , and Microservices architecture . The ideal candidate should also have a basic understanding of JUnit for testing and cloud platforms . Key Responsibilities: Design, develop, and maintain backend services using Java and Spring Boot Build and maintain microservices and REST APIs In-depth ...

Vitality Offices. Full time hours. We are happy to discuss flexible working! Top 3 skills required: To be fully proficient in Java Familiarity with DevOps tools To be able to identify key areas of improvement within Vitality's processes and standards What this role is all about: Software Engineers … thrive? Demonstrable expertise with 5+ years of experience in the use of appropriate tools/technologies for the design, development, build, testing & deployment of Java/JEE applications. Understanding of Agile Methodologies Demonstrated expertise with Spring Boot Demonstrable experience in integrating disparate applications and technologies using Java Experience ...

Java Software Engineer with around 3-6 years professional, post-graduate experience sought by one of the original Quantitative Hedge Funds, with a 20+ year track-record. The firm are renowned for a healthy, supportive, and collegiate working environment and culture, with no siloes, boasting an industry-leading … Corporate Functions. The team deal directly with business users right across the firm, taking ownership of analysis, design, architecture, and implementation, working primarily with Java, but also with Python, SQL and to a lesser extent, MATLAB. They currently have an opening for a mid-level hire in the team ...

Lead Software Engineer Lead (Java/Python, Cloud & AI) Location : London (5 days in office) Duration 12 months Competitive Day Rate (Inside IR35) Key Expectations from the role: Technical leadership and architecture Delivery ownership AI/ML solution stewardship People leadership Stakeholder and product partnership Controls and governance … Skills: Expert level proficiency in Java and/or Python. Cloud-native systems on AWS (compute, storage, networking, IAM, KMS, observability). Demonstrated success in leading teams Deep understanding of AI/ML solutions implementation, with emphasis on LLM applications and retrieval-augmented generation. Expertise in modern SDLC ...