21 of 21 Permanent Java Engineer Jobs in London

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 ❯

Pay: £70,000.00-£80,000.00 per year Job description: Senior Java Engineer London Salary: £70,000 - 80,000 Bonus: TBC This is a hybrid role that requires 3 days a week office attendance About the Company An exciting opportunity has arisen for a Senior Java Engineer to be part of a highly innovative forward thinking online … team building up the functionality of a bespoke best-of-breed banking technology, a single platform delivering loan issue, card issue and recovery. Were looking for an exceptional Senior Java Engineer who will work closely with the Java Team Lead & CTO as we scale up and modernise our business processes and tech stack. The role includes hands … well as working with the CTO to define the technical architecture and integration requirements for the solution. This is a great opportunity for a leading edge, innovative, high-class Java developer to enter the company at a time when you can make your mark on the development of the company and contribute to the quality work that has already More ❯

Pay: £70,000.00-£80,000.00 per year Job description: Senior Java Engineer London Salary: £70,000 Scroll down for a complete overview of what this job will require Are you the right candidate for this opportunity - 80,000 Bonus: TBC This is a hybrid role that requires 3 days a week office attendance About the Company An exciting … opportunity has arisen for a Senior Java Engineer to be part of a highly innovative forward thinking online challenger bank start-up funded by a major fund. You will be based remotely and from our London office. You will be joining a small but experienced team building up the functionality of a bespoke best-of-breed banking technology … a single platform delivering loan issue, card issue and recovery. Were looking for an exceptional Senior Java Engineer who will work closely with the Java Team Lead & CTO as we scale up and modernise our business processes and tech stack. The role includes hands-on development, mentoring other developers, driving code review processes as well as working More ❯

Senior Java Engineer - Front Office page is loaded Senior Java Engineer - Front Officelocations: London (82)time type: Full timeposted on: Posted Todayjob requisition id: JR101173 Senior Backend Engineer - Front Office Brevan Howard Asset Management is one of the leading absolute return/hedge fund managers, overseeing assets on behalf of institutional investors from around the … in risk management, operational robustness, and investment performance.The firm's main hubs are in London, Jersey, Geneva, New York, Austin, Hong Kong, Singapore, and Abu Dhabi.As a Senior Backend Engineer - Front Office , you will be responsible for building out the next generation of systems using the latest languages and quantitative techniques. The successful applicant will join the Merlin team … ROLES AND RESPONSIBILITIES Real-time Derived Data and Analytics Work closely with portfolio managers and Quants to expand our derived data and analytics universe. Contribute to complex low latency Java codebase. Understand Quant library interface and work with Quants to validate deliverables. API Development for Analytics and Data: Work closely with portfolio managers and quant devs to develop and More ❯

Lead Software Engineer – Java (Digital Consultancy) – London – Hybrid – up to £110K We’re working with a leading UK digital consultancy, rapidly growing across the UK with a headcount of 500+. They combine technical excellence with a culture that genuinely puts people first, delivering innovative solutions across finance, e-commerce, gaming, and more. This is a high-impact leadership … role for a Lead Java engineer ready to shape technology strategy, manage engineering teams, and deliver complex, mission-critical systems for household-name clients. The Role As a Lead Software Engineer, you will: • Take ownership of the design, architecture, and delivery of scalable, high-performance Java-based systems. • Lead technical direction across multiple projects, ensuring best … innovation and continuous improvement in development processes, cloud adoption, and CI/CD pipelines. • Act as a trusted technical advisor, balancing architectural vision with delivery realities. Tech Stack • Backend: Java, RESTful APIs • Cloud & Deployment: AWS, CI/CD pipelines • Other: Third-party API integrations About You • Extensive experience in Java backend development and API architecture. • Proven track record More ❯

Our client, a pioneering company in the IT sector, is currently seeking a Lead Java Engineer to join their team in London. It is our client's vision to connect the insurance community through market-leading technology. Their commitment to diversity, equity, and inclusion is central to their culture, fostering a positive, collaborative working environment where every employee … production, responding to change failures, and fixing issues Delivering new customer requirements quickly, reliably, and efficiently Contributing to a continually improving Agile software development framework Job Requirements: Experience in Java Ability to design and develop solutions that enable market leadership whilst improving the current technical estate Skill in mentoring and coaching software engineers Experience working as part of a … Opportunity to work in a dynamic and innovative IT environment Professional development and career progression opportunities Supportive and inclusive work culture Employee benefits package If you are a skilled Java Engineer ready to lead and inspire a team, while contributing to cutting-edge solutions in the IT sector, we encourage you to apply now. Join our client's More ❯

is based in Central London, and this role offers a hybrid approach - 1 day a week in the office, potentially 4 days per month in bulk. Skills Required QA Java Engineer Java Developer React.js JavaScript CSS HTML Frontend Development Ruby Java Ruby on Rails Linux REST Job Description QA Engineer - Fintech, Selenium, Java Salary … Up to £65,000 Quant Capital is urgently looking for a QA Engineer to join our high-profile client. They have recently raised (PE and Bank) £50 million and are set for another £100 million raise in February. They are acquiring users More ❯

Backend Software Engineer/Developer (Java 17 Kotlin AWS) London/WFH to £85k Are you a technologist Backend Software Engineer with strong Java skills looking to progress your career, working with a modern cloud based infrastructure and a range of technology? You could be joining a hugely successful and growing commodities trading firm that specialise … in trading silver and gold. As a Backend Software Engineer you'll collaborate with the Lead Engineer on the core trading platform as the company looks to scale the platform and introduce new features. There's an emphasis on code quality; designing and developing highly complex web based trading platforms working across the full development lifecycle. The technology … stack includes Java 17, Kotlin, Spring Boot and AWS amongst others; you'll be encouraged to expand your skillset using the latest technologies and choosing the best tool for the job in a friendly Agile team environment. WFH Policy: You'll join the team in the West London office with flexibility to work from home twice a week. About More ❯

Software Engineer/Developer (Java AWS React) London/WFH to £110k Are you a technologist looking for an opportunity to be part of something big from the start? You could be progressing your career in an impactful role at a newly established Fintech start-up, set up by a small team of finance and technology entrepreneurs with … a hugely successful track record. As a Software Engineer you will join a small team to build systems from the ground up, working across the full technology stack with a focus on designing, developing and deploying cloud-native microservices that form the core of the platform. You'll collaborate closely with the Lead Engineer, Architect and Product Manager … time, meeting up with colleagues in London; as the company grows there will likely be some in office requirements but with lots of flexibility. About you: You have strong Java, AWS and Kubernetes skills and also have a good appreciation of user interface/front end development using React or Tailwind CSS You have a strong knowledge of modern More ❯

Senior Software Engineer – Java (Digital Consultancy) – London – Hybrid – up to £85K We’re working with a rapidly growing UK digital consultancy with a headcount of 500+ and offices across the UK. They combine technical excellence with a supportive culture that genuinely puts people first. This is an opportunity to join a cross-functional agile team delivering innovative solutions … commerce, gaming, and more. You’ll be working alongside engineers, QA, product, and design to build robust systems that make a real impact. The Role As a Senior Software Engineer, you will: • Work across multiple technologies, producing scalable, testable, and well-architected code. • Develop and maintain RESTful Java APIs and database integrations. • Troubleshoot and solve complex software issues … ensuring quality and performance. • Guide and mentor less experienced engineers through feedback, pair programming, and coaching. Tech Stack • Backend: Java, RESTful APIs • Cloud & Deployment: AWS, CI/CD pipelines • Other: Third-party API integrations About You • Have strong Java API development experience. • Supports for best practices such as code reviews, pair programming, and automated testing. • Have experience with More ❯

Java Software Engineer £55,000-£70,000/annum Once every two weeks on client site - likely London SC position - UK Eyes Only Sanderson Government and Defence are working alongside a growing, exciting consultancy business who have recently won several exciting new projects in the UK public sector. They are a highly flexible business, with the only on … across a number of different projects, we are relatively open minded, however there are a few essentials. You must have 4+ years experience, and be capable with the following: Java Spring ecosystem AWS Cloud Microservices React (optional) Towards the upper end of the salary banding, we would also expect experience in mentoring, willingness and experience engaging with clients, and More ❯

A leading global investment bank is seeking a Java Developer/eTrading Strategist to join its London Rates eTrading team . This front-office role focuses on designing, building, and optimising low-latency Java trading systems that power the bank's global Rates business. The Role You will engineer high-performance Java components for algorithmic execution … with traders, quants, and technologists, you'll deliver production-ready eTrading solutions with a focus on latency, scalability, and resilience . Key Responsibilities Design and implement low-latency, multithreaded Java applications for Rates eTrading. Develop and optimise execution algorithms, smart order routers, and pricing engines . Profile and tune Java applications for GC optimisation, lock contention, and throughput … . Implement real-time monitoring, logging, and alerting frameworks . Partner with quants to integrate pricing models into Java-based trading systems . Conduct rigorous code reviews, testing, and benchmarking . Candidate Profile Degree in Computer Science, Engineering, Mathematics , or related field. 10+ years' experience in Java development within low-latency trading systems . Deep knowledge of Java More ❯

A Backend Software Engineer with strong Java and GoLang is required to join this growing fintech organisation. Java/GoLang Backend Engineer will grow and enhance the clients remittance platform, focussing on integrating new payout partners, enabling additional destinations and currencies for the customers. Candidates for the Java/GoLang Engineer role MUST have More ❯

Staff Software Engineer/Developer (Java Kotlin AWS React) Hybrid WFH to £110k Would you like to progress your career in an impactful hands-on Software Engineer role working on Tech for Good? You could be joining a HealthTech Start-up, founded by two highly successful, Cambridge University educated management consultants, that is aiming to improve patient … social care for all by using complex technology to improve access to patient records, enabling collaboration between healthcare providers and improving nursing and medical care. As a Staff Software Engineer you will collaborate with the CTO on the overall design and architecture of the products' tech stack, working on Greenfield applications. The tech stack is based on Kotlin, SpringBoot … liaise on bespoke product development. About you: You have expertise with software engineering best practices, experience across the full development lifecycle and tech stack You have experience with Kotlin, Java, SpringBoot and AWS You have a good understanding of APIs and permission based systems You have a good understanding of software architecture and have experience of building systems from More ❯

Staff Software Engineer/Developer (Java Kotlin AWS React) Hybrid WFH to £110k Would you like to progress your career in an impactful hands-on Software Engineer role working on Tech for Good? You could be joining a HealthTech Start-up, founded by two highly successful, Cambridge University educated management consultants, that is aiming to improve patient … social care for all by using complex technology to improve access to patient records, enabling collaboration between healthcare providers and improving nursing and medical care. As a Staff Software Engineer you will collaborate with the CTO on the overall design and architecture of the products' tech stack, working on Greenfield applications. The tech stack is based on Kotlin, SpringBoot … liaise on bespoke product development. About you: You have expertise with software engineering best practices, experience across the full development lifecycle and tech stack You have experience with Kotlin, Java, SpringBoot and AWS You have a good understanding of APIs and permission based systems You have a good understanding of software architecture and have experience of building systems from More ❯

Staff Software Engineer/Developer (Java Kotlin AWS React) Hybrid WFH to £110k Would you like to progress your career in an impactful hands-on Software Engineer role working on Tech for Good? You could be joining a HealthTech Start-up, founded by two highly successful, Cambridge University educated management consultants, that is aiming to improve patient More ❯

years of continuous growth and success, we're at a pivotal point on our journey to realise that aspiration. Why You'll Love This Opportunity as a Senior Software Engineer at Civica As a Senior Backend Software Engineer, you will play a critical role in designing, developing, and maintaining functionality of one of our flagship products. You will … highly disciplined software engineering environment. Proficiency in writing high-quality, readable, and maintainable code using Java. Experience designing and building RESTful APIs, modular services, and event-driven systems in Java (Spring Boot, Spring Cloud). Familiarity with cloud platforms (AWS preferred; Azure or Google Cloud Platform acceptable), containerisation tools (Docker), and orchestration frameworks (Kubernetes). Experience working with relational More ❯

Java Software Engineer £50,000-£75,000/annum Fully Remote SC position - Clearable Sanderson Government and Defence are working alongside a growing, exciting consultancy business who have recently won several exciting new projects in the UK public sector. They are a highly flexible business, with fully remote working available. Technically, as you could end up working across … a number of different projects, we are relatively open minded, however there are a few essentials. You must have 4+ years experience, and be capable with the following: Java Spring ecosystem AWS Cloud Microservices Towards the upper end of the salary banding, we would also expect experience in mentoring, willingness and experience engaging with clients, up to team leadership More ❯

latest technology. As part of our team, you can explore what motivates and energizes your career goals: partnering with our customers, our communities, and each other. Job Description Senior Java Developer with Technical Ownership Partnering with key technical and business stakeholders, the agile developer will help refine the product vision, estimate, design and build a solution before supporting it … for the platform and active development on it. Responsibilities/Qualities Experience working in large organisations with demonstrableskills of cross team collaboration Recent experience in product and compliance management Java - Extensive experience working with both large enterprise monolithic applications and modern cloud, micro service platforms Spring Boot, Spring MVC, JSP, Dropwizard, Maven, Gradle, Tomcat, Jetty, Junit, Mockito Microsoft SQL More ❯

Senior Engineer - AWS/Javs | Up to £85,000 + 30% Bonus + Enhanced Pension | Hybrid (1 Day/Week in London) Join a major UK financial services organisation that's investing heavily in cloud-native platforms and modern engineering practices. With millions of customers and a reputation for innovation, this company is transforming how it delivers digital experiences … maintainability Driving Agile delivery and mentoring junior engineers Sharing insights and innovations across the wider tech community Tech You'll Work With: AWS (SDK, CDK, Lambda, Step Functions) Node.js Java (Spring Boot) Terraform/CloudFormation SQL, GraphQL Postgres, DynamoDB (nice to have) Kubernetes, GitHub Actions, Quarkus (nice to have) What You'll Bring: Proven experience building distributed systems and More ❯

and we expect our leaders to flex where they work based on the needs of the company and their teams. The Role We are looking for a Senior Software Engineer to join us to help us build, enhance and scale our Protection Platform product. The Protection Platform lives within a modern tech ecosystem: Hosted entirely in the cloud (AWS … utilising products such as EKS, RDS, DynamoDB, EventBridge and S3. All our applications are JVM based with the majority running on Java 21. We're in the process of moving our backend services to Spring Boot. We've invested heavily in our DataDog integration to bring world class observability and monitoring to our systems. We've recently moved to … through code reviews, pairing, and knowledge sharing-helping to foster a culture of learning and ownership. What type of person fits the role You're a well-rounded software engineer who sees writing code as just one part of building great software. You care about solving real problems, not just shipping features, and you think critically about the trade More ❯