1 to 25 of 30 Java Engineer Jobs in London

Java Engineer - Java Developer - Software Engineer - PostGres - Kubernetes - Kafka - TDD - 6-Month Contract - Hybrid (2 days on site, London) - Day Rate: Up to £650 (Inside IR35) Join a high-performing engineering team working on large-scale, high-availability systems used by millions. This role offers … enhance complex backend services in a modern, cloud-native environment. What you'll be doing: Designing and developing performant, scalable backend systems using Java (up to Java 21) Working with PostGres Building microservices with Spring Boot and related frameworks Developing and maintaining RESTful APIs and event-driven systems ...

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 either SC or DV clearance. (SC) 5 years & (DV) 10 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 a 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 Engineer (Core Java) £100,000 - £130,000 Central London - Hybrid A high-growth, privately backed Enterprise SaaS company is seeking a Senior Core Java Engineer to join its London-based engineering team. The organisation builds large-scale, mission-critical platforms used by some … throughput distributed systems, solving complex engineering problems at scale within a collaborative, high-performing team. Key Responsibilities Design, build and maintain high-performance distributed Java services Contribute across design, development, testing, deployment and support Collaborate closely with other engineers to deliver customer-centric solutions Mentor and be mentored within ...

Java Software Engineer Java, J2EE, Spring, React, Node, SpringBoot, Hibernate, RabbitMQ, SQL We are seeking a Java Software Engineer with at least 5 years experience of working in a SaaS production environment. Our client is a leading provider of investment and wealth management solutions where … will joining a team of five who actively support the development, enhancement and troubleshooting of Java applications. To be considered for this role you will need to demonstrate an aptitude for supporting Java applications in a production environment. Essential Skills: 4 to 6 years technical experience with designing ...

Java Software Engineer Java, J2EE, Spring, React, Node, SpringBoot, Hibernate, RabbitMQ, SQL We are seeking a Java Software Engineer with at least 5 years experience of working in a SaaS production environment. Our client is a leading provider of investment and wealth management solutions where ...

Java Software Engineer/Developer (Full Stack Java) London/WFH to £100k Are you Java technologist? You could be progressing your career in a hands-on, impactful, Software Engineer role, working on a 'tech for good' product that is helping to drive efficiencies … complex real-time shift rota application, hosted on AWS and available via the web or mobile device (iOS/Android). As a Software Engineer you will play a crucial role in re-architecting and enhancing the scheduling platform to a Java and Angular codebase (from Ruby ...

Java Software Engineer A leading trading firm in London is growing its engineering team and is looking for a high-performance Java Engineer to help build ultra-low-latency systems used directly on live trading desks. What You’ll Be Doing Designing and building low-latency … Java systems used in electronic trading Developing highly concurrent, multithreaded applications Optimising performance at the microsecond level Working closely with traders, quants, and infrastructure teams Improving throughput, stability, and execution speed Writing clean, well-tested production code What We’re Looking For Strong commercial experience with Core Java ...

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 … custody system, designed for today's complex global markets. The company is experiencing great success and is expanding into the UK. As a Senior Java Developer you will take ownership of building a brand new Futures Trading platform for the UK, primarily using Java with a focus ...

Contract Role – Senior Golang/Java Security Engineer – London/Manchester/Glasgow/Hybrid – 12 months initial – Inside IR35 Role Overview: Job Title: Senior Golang/Java Security Engineer Location: Hybrid – 2 days onsite per week (London/Manchester/Glasgow) Contract Type: Contract Duration … months initial Rate: £500-650 per day (Inside IR35) Sector: Banking Key Skills & Experience Senior Golang/Java Security Engineer experience with: Golang/Go or Java The software security landscape: CVEs, CWEs, common software vulnerability types SAST, SCA, and DAST, including the strengths and weaknesses ...

Title: Senior Java Engineer (Smart Contract) Location: London Contract: 12 Months Are you a passionate Senior Java Developer looking to make a significant impact in an innovative environment? Our client is seeking a talented individual to join their dynamic team in London, where you'll design … fast-paced atmosphere and enjoy collaborating with cross-functional teams, this opportunity is for you! What We're Looking For: Strong expertise in Java and Spring/Spring boot. Hands on Smart Contract (Solidity) experience in essential Experienced in financial services , Ideally Commercial Lons. Experience in developing and deploying ...

Pricing Algo Java Engineer Up to £160,000 on the base I am looking for experienced Java engineers to join one of Europe’s top-tier fixed-income algorithmic trading desks. The role involves building a greenfield execution system from the ground up, spanning five core business … related quantitative field Minimum of 5 years of experience in electronic trading or a similar role in financial markets Strong programming skills in Java, with experience in low-latency environments In-depth understanding of market microstructure, order types, and exchange connectivity Excellent problem-solving skills and ability to work ...

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 ...

Backend Staff Engineer/Developer (Java AWS PostgreSQL) London/WFH to £120k Are you a backend focussed technologist with leadership skills? You could be progressing your career, in a senior, hands-on technical leadership role at a technology driven market research company that is scaling rapidly, having … qualifications Private medical care, access to free therapy X2 days per year for volunteering Excellent career development opportunities Your role: As a Backend Staff Engineer you will take a lead role in architecting, developing and scaling the core platform with a focus on backend engineering with Java (there ...

Please find the Job Description:- Role: Senior Java Developer Location: Farnborough/UK (Hybrid) Hybrid mode of work Exp range:8+ years Mandatory skills: Java Springboot, Java 17/11, AWS, Pipeline, Financial domain, Spark. JD: Java Tech Lead job involves leading and mentoring a Java … conducting code reviews, troubleshooting complex technical issues, and driving innovation with new technologies. Key Responsibilities: • Team Leadership: Lead, mentor, and guide a team of Java developers in the development lifecycle. • Project Management: Oversee Java development projects from conception to completion, ensuring alignment with project requirements and timelines. • Technical ...

Senior Java Developer - Java, Springboot & AWS – paying up to £650/day (Inside IR35) – Hybrid (2x a week - London) – 6 month contract Our client is seeking a Senior Java Developer who is passionate about clean code, cloud-native systems, and building technology that makes a real impact. … unique opportunity to work in an agile, high-ownership engineering culture. What You'll Be Doing: Build and scale backend services using Java and Spring Boot Shape a modern microservices architecture for a high-availability platform Deploy and manage services in AWS with Kubernetes (EKS) Design, implement ...

Full Stack Java Software Engineer (React.Js) required for my client in London. Paying £50k-£75k. My client are a growing B2B & B2C technology company. They require a Full Stack Java Software Engineer (React.Js) to join them on a full-time basis. This role is remote … there is expectation to ideally go to the office 1 day per week in London. Required experience Java 18+ experience Spring/Spring Boot PostgreSQL or similar Maven/Gradle REST APIs Microservices React.Js Desirable: Vue.Js experience ...

client is re-engineering their cloud-based practice management platform and looking for a Java Engineer to help take it global. You'll work hands-on with Java, Spring Boot, Azure, and modern cloud-native tech, building scalable, mission-critical systems used by thousands every day. What … Design and build cloud-native services with Java & Spring Tackle scale, performance, security, and reliability challenges Help modernise a large Azure platform (Kubernetes, Docker, Terraform) Coach junior engineers and influence technical decisions What you'll bring 5+ years' Java experience (Spring/JEE) Strong API, database ...

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 ...

client is re-engineering their cloud-based practice management platform and looking for a Java Engineer to help take it global. You'll work hands-on with Java, Spring Boot, Azure, and modern cloud-native tech, building scalable, mission-critical systems used by thousands every day. What … Design and build cloud-native services with Java & Spring Tackle scale, performance, security, and re click apply for full job details ...

Java Software Engineer/Developer (Full Stack Java) London/WFH to £100k Are you Java technologist? You could be progressing your career in a hands-on, impactful, Software Engineer role, working on a 'tech for good' product that is helping to drive efficiencies ...

Java Developer Join a high-impact Core Technology team at a leading hedge fund. About the Company This firm is a major player in the space, a multi-strategy hedge fund with a strong focus on systematic and quantitative trading. Founded by industry veterans, it combines deep financial expertise … with advanced software engineering to manage institutional capital globally. What You’ll Do Design and build high impact internal systems using Java Own projects end-to-end: from architecture to deployment Collaborate with analysts to solve real-world business problems Support and mentor junior team members on coding ...

Role: Software Engineer Location: 1-2 days a week in London Salary: £80,000 - £115,000 + Bonus Are you a motivated java micro-services specialised software engineer looking to elevate your career? This is an opportunity for a technically minded individual to be designing, producing, testing … liaising with principal engineers, architects in the domain and other key stakeholders to understand how the platform works We are looking for a senior engineer we can find to take part in some of the largest up coming projects in the banking industry Ideal Candidate: We're looking ...

Contract Software Engineer (x2) - Java | £325 per day | Inside IR35 Start Date: ASAP End Date: 30th June 2026 Location: London (Remote, one day per week on-site) Arrangement: Hybrid/Mostly Remote We're looking for two mid-level Software Engineers to join a collaborative and forward-thinking … supportive Agile environment that values clean code, test-driven principles, and continuous improvement. What You'll Be Doing Designing, developing, testing, and maintaining Java-based applications. Building and deploying solutions in Amazon AWS cloud environments. Contributing to a microservices-based architecture. Writing clean, testable, and well-documented code following ...

Junior Core Java Developer – Trading £70,000 Plus Large Prop Bonus Quant Capital is urgently looking for a Core Java Developer to join a well known trading firm. No experience of finance is needed, finance isn’t what this firm does, tech is. Our client is an innovative … order of multi millions not 3 guys in a shed. The role: This role and would suit a candidate with 2-4 years of Java Development experience. The successful candidate will be a top tier Java developer (or aspiring, half of the team don’t have a comp ...

Graduate Quant Software Engineer (C++/Java – Trading Systems) | £55,000–£77,000 | Hybrid (London/Remote) Build technology that powers real trading. Join a high-performance engineering team developing low-latency, resilient backend systems used in live trading environments. You’ll work on complex technical challenges from … Design, build, and optimise backend components of real-time trading and risk systems Develop clean, efficient, high-performance code in C++ and Java Work closely with traders, quants, and senior engineers to deliver new features Solve complex problems around performance, reliability, and scale Contribute to architecture discussions ...