1 to 25 of 56 Java Software Engineer Jobs in the UK

Build and improve real-world Java desktop software in a small, influential engineering team where your technical decisions, ideas, and leadership will genuinely matter. Hands-on Java desktop software role focused on Swing-based commercial applications - not web development. About Us Semantics 21 is a multi … award-winning UK software company developing specialist desktop software used internationally within public safety and investigative environments. Our technology helps organisations process and review digital evidence more effectively, supporting work that can have genuine real-world impact in areas including child protection and public safety. We are growing ...

Lead Software Engineer (Java/Typescript) We are looking for a highly skilled Lead Software Engineer to take ownership of one of our clients core platform systems. In this pivotal role, you will guide a talented engineering team, ensuring the stability, performance, and ongoing evolution … will help shape the technical roadmap and ensure our systems remain scalable, reliable, and innovative. Key Responsibilities Technical Leadership: Provide technical direction across the software development lifecycle, ensuring alignment with internal standards and best practices. Hands-On Coding: Contribute directly to the codebase and support sprint goals with high ...

Backend Software Engineer (Java) 7 Months initial contract 4 Days per week on site in Basildon £503 per day (Inside IR35) My client in the automotive industry are seeking an experienced Senior Backend Software Engineer to join their Identity Management Services team, focusing … your deep engineering expertise to elevate the team's technical standards and foster a culture of excellence in backend engineering. Skills Required: - Proficiency in Java - Java Framework - Web development - DevOps practices (CI/CD, version control) - Security and identity management - Monitoring and logging - Relational databases - Server-Side technologies ...

Senior Software Engineer - Java/Spring/Full stack (Fully Remote) Location: Fully Remote Salary: £50,000 to £60,000 plus strong wider benefits package About the role Our client, a digital consultancy delivering into central government, are looking for a Software Engineer to join … improving how services operate at scale, working closely with client stakeholders and other teams. This is a hands-on full stack role using Java, JavaScript, Spring and AWS in a fast-moving, stakeholder-heavy environment. Key responsibilities Design, build and improve digital services within the DRS workstream Deliver full ...

Software Engineer (Java) £55,000-£65,000 + package Remote - South Wales office (On-site a couple times p/month) Eligible for Security Clearance (must have resided in the UK for the last 5 years) CPS Group are working with a South Wales-based Tech organisation … recruit a Software Engineer to join a highly skilled, collaborative engineering team delivering enterprise-scale solutions in an agile environment. You'll be working primarily with Java, which is essential for this position, while also contributing to Frontend services as the platform evolves. While Angular experience ...

Software Engineer (Java) Location: UK/Ireland (remote) Please note : You need to be based in the UK or Ireland No Visa sponsorship offered Salary: Up to £50k Engineer systems that power real-world commerce. Our client is building the next generation of capabilities that power … unnecessary process. If you’re driven by impact and enjoy solving meaningful technical challenges, this could be an excellent fit. The Role As a Software Engineer, you will design and develop backend services, APIs, and portal systems that operate within high-availability payment processing platforms. Working within ...

Software Engineer, Developer, Backend Java Identity - IAM Contract Until End of December 2026 (Renewable) Rate: £500 per day Inside IR35 Location:Essex based offices (between Brentwood and Basildon) 4 days a week The banking and finance arm of one of the worlds leading manufacturing companies … household name is seeking asoftware engineer, software developer with Backend, Back End and Identity Access Management (IAM) expertise. The Backend Software Engineer will join the Identity Management Services team, (IAM) focusing on the core platform work that powers identity infrastructure. Main Tasks & Responsibilities: > Design and build ...

Java Software Engineer - Payment Processing This is a fantastic opportunity to grow and evolve within a Software Engineering function with the opportunity to improve the software development process, methodologies and tools through applied experience, automation and simplification. This global payment processing companyare building the next … partner needs, problems, and expectations and taking action to address expectations through high quality, innovative solutions that deliver value to our customers. Improving the software development process, methodologies, and tools through applied experience, automation, and simplification. Assisting with software deployment activities to internal test environments and production data ...

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 ...

Role Senior Software Engineer Java .NET FTC Manager Lead Development Manager Location Hybrid Role Overview We are looking for 3 experienced Senior Developers, to support the ongoing evolution of the TMS platform, contributing to the development of modern, scalable solutions within a complex transport and logistics environment. … role will involve designing, developing, and enhancing business-critical applications across a modern technology stack including Java 1721, Spring Boot 3.x, Angular 16/17, and Flutter/Dart. Working as part of a collaborative engineering team, you will help deliver high-quality software solutions that support operational ...

Group is delighted to be partnering with a global technology organisation as they expand their Cyber Security Engineering teams with the addition of multiple Software Engineers across varying levels of experience. This is an opportunity to join a modern, cloud-first engineering environment building enterprise-scale security platforms … into large-scale enterprise platforms. The Role You'll join a collaborative engineering team responsible for designing, building and operating security capabilities as scalable software products. Working across the full SDLC, you'll help deliver secure, reliable and developer-friendly services while collaborating closely with product, platform and engineering ...

Contract Senior Software Engineer (Java or Python) | Inside IR35 Contract length: 6 months (with potential to extend) Location: London Working Environment: On-site You will be joining a private equity firm as a senior software engineer, to work across the following responsibilities: Develop and support … production-grade code Provide production support, working with Platform and SRE teams as needed Key Requirements: Technical: 8+ years commercial experience in Python or Java across the full development lifecycle 5+ years in financial services (buy-side strongly preferred) Solid relational database skills; MS SQL Server a strong plus ...

Contract Senior Software Engineer (Java or Python) | Inside IR35 Contract length: 6 months (with potential to extend) Location: London Working Environment: On-site You will be joining a private equity firm as a senior software engineer, to work across the following responsibilities: Develop and support … production-grade code Provide production support, working with Platform and SRE teams as needed Key Requirements: Technical: 8+ years commercial experience in Python or Java across the full development lifecycle 5+ years in financial services (buy-side strongly preferred) Solid relational database skills; MS SQL Server a strong plus ...

Senior Software Engineer - Java/Spring/Full stack (Fully Remote) Location: Fully Remote Salary: £50,000 to £60,000 plus strong wider benefits package About the role Our client, a digital consultancy delivering into central government, are looking for a Software Engineer to join ...

client is a growing, mission-led consultancy delivering secure and modern software solutions across the UK Government and Defence sectors. They are now looking for an experienced Principal Full Stack Software Engineer to join their collaborative and forward-thinking engineering team. This is an exciting opportunity … senior engineer who enjoys staying hands-on across both back-end and front-end development while also helping shape technical direction, mentoring teams, and driving engineering best practice. You will work on secure, scalable cloud-native platforms, modern web applications, APIs, and digital services that support meaningful and high ...

Java Engineer – Mobile Platform London based 2 days a week in the office I'm currently supporting a leading Bank in their search for an experienced Java Engineer to join their flagship mobile platform. The system is built in Java on AWS with a strong … established team of talented Engineers in a company that have a strong emphasis on upskilling and a knowledge sharing culture. Requirements: • Strong understanding of Java and Microservices • Strong testing experience (TDD) using Junit • Experience dealing with highly scalable systems with high throughput • Good knowledge of AWS Does this sound ...

IMMEDIATE JOINERS !! Java Software Developer Location: London Work Mode: On-site Job Type: Full-time The Role We are looking for a Java Full Stack Developer who A Java Developer (2-5 years experience) designs, codes, tests, and maintains scalable Java applications, collaborating with teams … Development: Design and develop high-volume, low-latency applications for mission-critical systems. Back-End Excellence: Write clean, maintainable code using Java and the Spring Boot ecosystem. Front-End Innovation: Build responsive, user-friendly UI components using React, Angular, or Vue.js . Database Management: Design and optimize schemas ...

Senior Java Engineer – Low Latency Trading London/New York (Hybrid) Skills: Java, Java 23, Low Latency, Trading Platforms, Market Data, Aeron, Kafka, Chronicle, FIX Artemis Talent is partnering with a leading trading technology firm building high-performance, real-time trading systems used across global markets. … sensitive infrastructure across order management, execution, and market data where performance and reliability are critical. The Role Design and build low-latency, high-throughput Java systems Optimise performance across latency, concurrency, and memory Contribute to mission-critical trading platforms (OMS/EMS, market data) Work closely with engineering ...

Senior Software Engineer - London Harrington Starr are working alongside a unique financial trading technology firm who are seeking 10+ Senior Java Developers to join their Core Development team and build out low latency systems. You absolutely have to have is a demonstrable interest in technology, precision … successful candidate will have strong appreciation of Linux, common design patterns, and be a practitioner of TDD. For the role of the Senior Java Engineer you will need the following skills: Strong knowledge of Core Java development, ideally in a low latency/real time environment Strong ...

Level: 9 UK Wide We are looking for a Senior Software Engineer who will be responsible for designing, developing, and deploying high-quality software solutions. You will work on complex software projects, contributing to the architecture, development, and improvement of software systems. This role involves … mentoring junior engineers, collaborating with cross-functional teams, and driving the adoption of best practices in software development. Responsibilities Design, develop, and maintain complex software solutions, ensuring they are robust, secure, tested and scalable. Contribute to software architecture decisions, ensuring alignment with project and business goals. Mentor ...

Java Software Engineer - Microservices | Payments | Enterprise-Scale Systems We’re looking for an experienced Senior Java Developer to join a high-performing engineering team delivering large-scale, business-critical platforms in a complex enterprise environment. This role is suited to someone who enjoys solving real business … problems through strong engineering practices, modern architecture, and clean, scalable code. You’ll work across the full software development lifecycle, partnering closely with product, architecture, QA, and production teams to deliver resilient, high-quality solutions. Key Responsibilities • Design, develop, and optimise secure, scalable Java-based applications • Build ...

Software Engineer - Java/Kotlin | Backend | Integrations Manchester (Hybrid - 2 days per week) | 6 month initial contract | £500-600pd inside IR35 | Immediate start A leading global digital platform is building a brand-new engineering team focused on transforming how third-party integrations are delivered at scale. … connect into a marketplace ecosystem, reducing onboarding from months to days through smarter architecture, automation and AI-enabled engineering practices. We're looking for Software Engineers with strong backend engineering and automated testing experience to help shape this capability from the ground up. The Opportunity: Joining a newly established ...

Senior Software Engineer - (Java, Pricing API,) - 5 days - Retail - London Day rate: £400 - £500 (inside IR35) Duration: 6 months On site: 5 days per week Start: Now My client is looking for a Senior Java Developer with 8 - 15 years experience to join the team … building resilient systems at scale, this could be a great fit. What You'll Be Doing Designing and building scalable backend systems using Java and the JVM ecosystem Developing clean, maintainable code from product requirements Applying TDD/BDD practices and modern engineering principles Building and maintaining cloud-native ...

Java Software Developer £600/day Inside IR-35 for an initial 6 months with extension likely London - 3 days per week on site Active SC Clearance essential We're looking for a Java developer to join an established engineering team working on backend services hosted … Azure. The role focuses on building and supporting Java applications and APIs, using VS Code as a primary development environment. You'll work closely with other engineers across backend, frontend, and DevOps, contributing to cloud-based systems. About the role Java backend development role Focus on services ...

Senior Software Engineer - (Java, Pricing API,) - 5 days - Retail - London Day rate: £400 - £500 (inside IR35) Duration: 6 months On site: 5 days per week Start: Now My client is looking for a Senior Java Developer with 8 - 15 years experience to join the team ...