19 of 19 Java Engineer Jobs in London

Java Engineer Salary to £60k + 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 or DV clearance. (SC) 5 years & (DV) 10 years residency in the UK with no more than a 3 month break outside the … manage casework, derive insight from data and deliver citizen services. Theyre growing fast and looking for bright, dynamic people to help build their business. Role Theyre looking for a Java Engineer to join their implementation team. Youll work across Camunda BPMN/DMN process automation, API integration, and microservice orchestration helping their public-sector clients build secure, scalable … week. Client sites could be anywhere but will most likely be in & around London. Responsibilities Design, develop, and deploy Camunda-based process and decision automation solutions Implement and integrate Java-based microservices, APIs, and connectors within orchestration flows Translate BPMN and DMN models into executable workflows and reusable components Collaborate closely with analysts and service designers to refine and More ❯

Java Engineer • Salary to £60k + 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 or DV clearance. (SC) 5 years & (DV) 10 years residency in the UK with no more than a 3 month break outside the … derive insight from data and deliver citizen services. They’re growing fast and looking for bright, dynamic people to help build their business. Role They’re looking for a Java Engineer to join their implementation team. You’ll work across Camunda BPMN/DMN process automation, API integration, and microservice orchestration — helping their public-sector clients build secure … week. Client sites could be anywhere but will most likely be in & around London. Responsibilities Design, develop, and deploy Camunda-based process and decision automation solutions Implement and integrate Java-based microservices, APIs, and connectors within orchestration flows Translate BPMN and DMN models into executable workflows and reusable components Collaborate closely with analysts and service designers to refine and More ❯

Job Title: Mid-Senior Java Engineer Location: London (Hybrid - 2-3 days in-office) Salary: Up to £85,000 per annum + Benefits Sector: Financial Services About the Role: We are seeking a Senior-Level Java Engineer to join a dynamic financial technology team in London. You will play a key role in developing, maintaining, and … enhancing high-performance, scalable financial applications. This is a fantastic opportunity for an ambitious developer with experience in Java and a passion for the financial sector. The role follows a hybrid working model, with 2-3 days per week in the office. Key Responsibilities: Design, develop, and maintain high-quality Java-based applications for financial services. Collaborate with … in code reviews and provide constructive feedback. Stay updated with the latest financial technologies and industry trends. Key Requirements: Based in the London Area 5+ years of experience in Java development (Java 8 or later). Experience with Spring Boot, Microservices architecture, and RESTful APIs. Strong understanding of multi-threading, concurrency, and performance optimization. Knowledge of SQL and More ❯

Lead Software Engineer - Java Microservices Location: London (Hybrid - 2 days on-site, Monday and Tuesday) Overview We're excited to be supporting our client in hiring a talented Software Engineer (Java Microservices) to join a dynamic, high-performing engineering team within retail banking. This is a fantastic opportunity for a technically minded individual who's passionate … stakeholders to align technical solutions with business objectives Applying Agile and Test-Driven Development (TDD) principles to build resilient, fast-running, and maintainable code Building and maintaining API-driven Java microservices hosted on public cloud infrastructure Contributing to intentional architecture while supporting emergent design through innovation, prototyping, and experimentation Automating build, test, and deployment processes using modern CI/… CD practices What We're Looking For Strong server-side Java engineering experience, ideally within large-scale, business-critical environments Proven ability to design and deliver well-tested, production-ready software with strong focus on functional and non-functional requirements Deep understanding of microservices architecture, cloud-native applications, and API development Experience with distributed systems - managing workloads at scale More ❯

At Mindera, we craft software with people we love. We're looking for a Principal Java Engineer with strong Retail experience who can join our crew Please note: This is a six month contract that sits outside IR35. You will be required to work in Paddington 3 days a week. What does the role involve? Lead technical deep … dives and knowledge sharing in the teams, anticipating challenges and proposing solutions Start influencing product and business decisions Hands-on Software Development: Write high-quality Java code using frameworks such as Spring Boot or Micronaut. Build robust services that support secure, high-volume payment transactions. Develop integrations with acquiring banks, payment gateways, and fraud detection tools. Cloud & DevOps Practices … support. Continuous Improvement: Continuously improve platform reliability, performance, and cost-efficiency. Stay up-to-date with technology trends and proactively identify innovation opportunities. Requirements Proven experience as a Principal Java Engineer in backend-heavy environments in teams having multiple levels of engineering. Strong experience in Java 17+, ideally with experience in using Spring Boot or Micronaut. Kotlin More ❯

QA Engineer (Java) | Fintech Trading £70,000 - £80,000 + Bonus + Benefits Hybrid - 3 days/week in Central London Join a collaborative, engineering-led team ensuring the stability and performance of a high-volume, global electronic trading platform. You'll write clean, quality Java-based automation code to contribute to an internal Java-based … test automation framework, catching issues before they hit production and helping deliver flawless, high-performance user experiences. What You'll Do Build and maintain robust Java test automation Work on an internal Java-based test automation framework used across all teams handling high-traffic, real-time trades. Collaborate with developers to improve quality at every stage. Own QA … processes for performance, reliability and user experience. What You Bring Strong experience with Java automation testing & backend testing. Background in automation testing for complex, high-performance platforms. Passion for quality and attention to detail in fast-paced environments. BONUS POINTS: Experience in electronic trading, FX, banking or fintech domains Shape the quality of software that millions of trades rely More ❯

eFX Software Engineer (Ultra-Low Latency Java) Hybrid/Remote - London Up to £160,000 + Bonus + Benefits We're supporting a major financial services organisation hiring an eFX Software Engineer to build and optimise ultra-low-latency trading systems used across global FX markets. If you're a high-performance Java engineer who … opportunity. What you'll work on: Engineering sub-40μs latency eFX systems with high throughput and fault tolerance Designing real-time pricing, risk and trading components Evolving low-latency Java patterns (lock-free, low-GC, CPU/cache optimisation) Working closely with quants, traders, architects and senior engineers Influencing technical strategy across distributed, performance-critical systems What we're … looking for: Strong experience in low-latency Java within trading, eFX or electronic markets Deep understanding of networking (TCP/UDP/FIX), Linux tuning, performance profiling Background in designing high-performance architectures and distributed systems Strong grasp of FX pricing, risk, and trading workflows Solid engineering fundamentals: testing, CI/CD, API design, automation Why join? Work on More ❯

Currently hiring a Senior Java Engineer to join a fixed income trading team - a high-performing group responsible for building and maintaining global trading systems used daily by traders and middle office teams. These systems handle complex financial instruments, from bonds and repos to interest rate swaps and exotic portfolios, with a strong focus on performance, reliability, and … traceability. Key Responsibilities: Design, develop, test, and deploy high-quality software using Java and related technologies Conduct code reviews, ensuring clean, maintainable, and efficient code Mentor junior developers and promote technical excellence within the team Analyse and resolve performance, scalability, and concurrency issues Contribute to Agile/Scrum processes, including sprint planning and retrospectives Maintain clear and comprehensive technical … documentation Key Requirements: Strong expertise in Core Java, including multi-threading and concurrency demonstrating self-sufficiency Proven experience in low-latency systems, performance tuning, and network programming Familiarity with high-performance messaging systems Proficiency with profiling, benchmarking, and memory analysis tools Working knowledge of Linux/Bash scripting and at least one other language (e.g. Python or C#) Robert More ❯

Role: Software Engineer (Java) Location: London Salary: Competitive salary and package (Depending on level of experience) Any offer of employment is subject to satisfactory BPSS and the candidate being granted a level of security clearance which typically requires 10 years continuous UK address history, usually including no periods of 30 consecutive days or more spent outside of the More ❯

Job Title: Senior Engineer with Node.js and Python or Back End (Java and ideally Kafka) Max rate: £537/Day on Umbrella Location: Croydon (Hybrid) Clearance required: SC Transfer (Active SC only ) Contract Duration: 05 months Experience of Java Experience of Spring framework or equivalent. Knowledge of software design patterns and when to apply them Excellent knowledge More ❯

We are hiring an experienced Senior Software Engineer with deep expertise in ultra-low-latency, high-throughput Java systems . This is a role for someone who builds systems that push performance boundaries, not just enterprise-grade services. You'll join a specialist engineering group designing fault-tolerant, sub-40s latency pipelines, shaping architecture decisions and solving complex … technical challenges that require first principles thinking. What You'll Be Working On Designing and optimising high-performance Java services with lock-free, zero-allocation and low-GC approaches. Hardware-aware optimisation including CPU architecture, cache behaviour, kernel tuning, core pinning and memory layouts . Building and improving ultra-low-latency messaging pipelines (Multicast, TCP, IPC). Working directly … leadership on system architecture and performance strategy. Driving technical direction and mentoring senior members of the team. What We're Looking For 10+ years professional engineering experience with core Java in latency-sensitive environments. Strong knowledge of: Ring buffers Off-heap/zero-allocation techniques IPC and high-performance networking Linux kernel optimisation Domain experience in eTrading, market-making More ❯

We are hiring an experienced Senior Software Engineer with deep expertise in ultra-low-latency, high-throughput Java systems . This is a role for someone who builds systems that push performance boundaries, not just enterprise-grade services. You'll join a specialist engineering group designing fault-tolerant, sub-40μs latency pipelines, shaping architecture decisions and solving complex … technical challenges that require first principles thinking. What You'll Be Working On Designing and optimising high-performance Java services with lock-free, zero-allocation and low-GC approaches. Hardware-aware optimisation including CPU architecture, cache behaviour, kernel tuning, core pinning and memory layouts . Building and improving ultra-low-latency messaging pipelines (Multicast, TCP, IPC). Working directly … leadership on system architecture and performance strategy. Driving technical direction and mentoring senior members of the team. What We're Looking For 10+ years professional engineering experience with core Java in latency-sensitive environments. Strong knowledge of: Ring buffers Off-heap/zero-allocation techniques IPC and high-performance networking Linux kernel optimisation Domain experience in eTrading, market-making More ❯

This role focuses on building high-performance, scalable Java services at the core of an ultra-low-latency global trading platform. You'll work on complex, data-intensive systems that support real-time pricing, configuration management, and electronic trading operations. Key Responsibilities Develop software across both functional features and non-functional objectives such as performance and scalability. Build and … quantitative research and trading teams on design, usability, and platform enhancements. Produce clear technical documentation, including architecture decisions and complex code explanations. Key Requirements Strong understanding of the core Java platform. Experience in Financial Services, ideally trading/FX Experience with JavaScript/TypeScript and HTML5 (highly desirable). Solid knowledge of computer science fundamentals, including data structures and More ❯

London and they go the office 3 to 4 times a week and this will be a 6 month contract initially. Description Lead the design, development, and implementation of Java-based applications and systems. Help to plan future development. Collaborate with cross-functional teams to gather and analyse requirements. Ensure the scalability, performance, and reliability of software solutions. Mentor … Deal with a variety of clients. Work alongside the outsourcing partners Maintain and improve existing systems by identifying and fixing bugs or implementing enhancements. Keep updated with the latest Java technologies and integrate them into projects as needed. Prepare technical documentation to support solutions and team processes. Contribute to the strategic planning of technology initiatives within the organisation. Profile … Must haves: Java Worked in the Derivatives market Strong communication Dealt with clients or stakeholders Modelling financial products and processes APIs and Integrations Nice to haves: Python Worked in derivatives product classes Hands on model development experience Experience with collateral malmanagement Worked with regulatory processes Job Offer Contract role More ❯

London and they go the office 3 to 4 times a week and this will be a 6 month contract initially. Description Lead the design, development, and implementation of Java-based applications and systems. Help to plan future development. Collaborate with cross-functional teams to gather and analyse requirements. Ensure the scalability, performance, and reliability of software solutions. Mentor … Deal with a variety of clients. Work alongside the outsourcing partners Maintain and improve existing systems by identifying and fixing bugs or implementing enhancements. Keep updated with the latest Java technologies and integrate them into projects as needed. Prepare technical documentation to support solutions and team processes. Contribute to the strategic planning of technology initiatives within the organisation. Profile … Must haves: Java Worked in the Derivatives market Strong communication Dealt with clients or stakeholders Modelling financial products and processes APIs and Integrations Nice to haves: Python Worked in derivatives product classes Hands on model development experience Experience with collateral malmanagement Worked with regulatory processes Job Offer Contract role More ❯

London and they go the office 3 to 4 times a week and this will be a 6 month contract initially. Description Lead the design, development, and implementation of Java-based applications and systems. Help to plan future development. Collaborate with cross-functional teams to gather and analyse requirements. Ensure the scalability, performance, and reliability of software solutions. Mentor … Deal with a variety of clients. Work alongside the outsourcing partners Maintain and improve existing systems by identifying and fixing bugs or implementing enhancements. Keep updated with the latest Java technologies and integrate them into projects as needed. Prepare technical documentation to support solutions and team processes. Contribute to the strategic planning of technology initiatives within the organisation. Profile … Must haves: Java Worked in the Derivatives market Strong communication Dealt with clients or stakeholders Modelling financial products and processes APIs and Integrations Nice to haves: Python Worked in derivatives product classes Hands on model development experience Experience with collateral malmanagement Worked with regulatory processes Job Offer Contract role More ❯

to gain the skills and experience needed to grow within your role and advance your career — and we have the perfect software engineering opportunity for you. As a Software Engineer II at JPMorgan Chase within the Corporate Technology - Corporate Oversight & Governance Group, you will be part of an agile team dedicated to enhancing, designing, and delivering the software components … debugging, and maintaining code in a large corporate environment with one or more modern programming languages and database querying languages Demonstrable ability to code in one or more languages: Java, Spring boot, JPA, SQL, REST and modern front-end technologies like React, Angular, TypeScript, CSS, HTML, NodeJS, NextJS Experience with working on micro services, distributed architecture, Kubernetes and Kafka More ❯

delivering cutting-edge solutions across industries. This role sits within a collaborative, agile environment focused on innovation, professional growth, and real-world impact. Role Overview As a Full Stack Engineer, you'll design and build modern digital services using Java and a range of front-end and cloud technologies. You'll work closely with multidisciplinary teams to deliver … scalable, secure, and user-focused solutions. Key Responsibilities Develop microservices using Java (Spring Boot). Build responsive front-end applications using JavaScript/TypeScript, React, HTML, and CSS. Use Git-based version control and CI/CD pipelines (GitHub, GitLab, Jenkins). Containerize applications using Docker and manage deployments in cloud environments (AWS or Azure). Collaborate in agile More ❯

Contract Role: Senior Software Engineer (x2) Rate: Up to £375/day (Inside IR35) Location: London - 1 day a week onsite Duration: ASAP - 31 March 2026 We're building a brand-new engineering team to modernise and futureproof Media Services products. This is your chance to join a major legacy replacement programme, tackling technical debt and designing cloud-native … components that will drive scalable, high-performing systems. What You'll Do: Design and implement new, cloud-native solutions to replace legacy components Work in Go and Java microservices within an AWS-native environment Apply DevOps practices, automating CI/CD pipelines and applying CDK to build infrastructure-as-code Champion Test Driven Development for reliable, high-quality delivery … Collaborate with talented engineersonsite in London once a weekto shape modern ways of working What You'll Bring: Strong Go (Golang) engineering experience Solid background with Java microservices Expertise in AWS, particularly CDK Hands-on DevOps and CI/CD pipeline knowledge Proven record with component migrations and TDD If you're an engineer who thrives on modernisation More ❯