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28 senior java developer jobs found

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Contract Spy
Aug 21, 2026
6 Months or more
Senior Java Developer at EPAM Systems, Belfast, 6 Months, £Contract Rate
Contract Spy Belfast, UK
Senior Java Developer (6 month contract) Full job description First Derivative is driven by people, data, and technology, unlocking the value of insight, hindsight, and foresight to drive organizations forward. Counting many of the world's leading investment banks as clients, we help our clients navigate the data-driven, digital revolution that is transforming the financial services sector. Our global teams span across 15 offices serving clients across EMEA, North America and APAC. As an EPAM Systems, Inc. (NYSE: EPAM) company, a leading global provider of digital platform engineering and development services, we deliver advanced financial services solutions by empowering operational insights, driving innovation, and enabling more effective risk management in an increasingly data-centric world. Together with EPAM, we combine deep industry expertise with cutting-edge technology to help clients stay ahead in a rapidly evolving financial landscape, offering...
Contract Spy
Aug 14, 2026
6 Months or more
Senior Java Developer at EPAM Systems, Belfast, 6 Months, £Contract Rate
Contract Spy Belfast, UK
Senior Java Developer (6 month contract) Full job description First Derivative is driven by people, data, and technology, unlocking the value of insight, hindsight, and foresight to drive organizations forward. Counting many of the world's leading investment banks as clients, we help our clients navigate the data-driven, digital revolution that is transforming the financial services sector. Our global teams span across 15 offices serving clients across EMEA, North America and APAC. As an EPAM Systems, Inc. (NYSE: EPAM) company, a leading global provider of digital platform engineering and development services, we deliver advanced financial services solutions by empowering operational insights, driving innovation, and enabling more effective risk management in an increasingly data-centric world. Together with EPAM, we combine deep industry expertise with cutting-edge technology to help clients stay ahead in a rapidly evolving financial landscape, offering...
Contract Spy
Aug 10, 2026
6 Months or more
Senior Java Developer - SC Cleared at Department for Work & Pensions, UK Office/Remote, 12 Months, £Contract Rate
Contract Spy Hybrid (UK)
Join DWP 's Digital team supporting the Government 's Job Guarantee programme, helping young people into work. You 'll play a key role in the ongoing development of the platform, building modern digital services that support citizen journeys, provider engagement and payment processes within Agile delivery teams.   As a Senior Java Developer your main responsibilities will be: Building and enhancing Spring Boot microservices Developing scalable cloud based services in AWS Writing automated tests using TDD practices and modern testing frameworks Contributing to event driven solutions and integrations Owning complex features from design through to delivery Supporting code reviews and promoting engineering best practice Collaborating with Product Managers, Architects, Business Analysts and QA teams Supporting the delivery of a major DWP digital programme   Essential: Strong Java development experience (Java 17+) Spring...
Contract Spy
Aug 07, 2026
Duration not stated
Senior Java Developer - SC Cleared at RedRock Consulting, Sheffield, £Contract Rate
Contract Spy Sheffield, England, United Kingdom
Senior Java Developer: 👨 💻   📍 Location : Sheffield 📅 Contract: Inside IR 35 🔒 Clearance: Active SC Clearance preferred, or candidates with a strong likelihood of obtaining SC clearance due to previously held or lapsed clearance   About the Role We're looking for a Senior Java Developers to join a high-profile UK Gov programme, supporting the development of next-generation Electronic Monitoring capabilities. You'll play a key role in designing and building cloud-native, event-driven services , developing Authority-owned APIs, operational tooling, and modern digital services while contributing to the continuous improvement of existing live platforms. Working within agile, multidisciplinary teams, you'll collaborate closely with Technical Architects, Product Managers, Data Engineers and Delivery Managers to deliver secure, scalable solutions that make a real impact across government.   🔑 Key Responsibilities...
Contract Spy
Aug 10, 2026
Duration not stated
Lead Java Developer - SC Cleared at RedRock Consulting, England, £Contract Rate
Contract Spy England, United Kingdom
Rate: Inside IR35 Clearance: Active SC or confident in passing Location: Leeds, Sheffield or London Travel: Maximum once per month Contract: Initial contract   We’re looking for an experienced Senior Java Developer to join a large-scale technology programme, working on modern applications and services within a complex enterprise environment.   Key Skills & Experience Strong, recent experience developing applications using Java and Spring Boot Experience developing front-end applications – Thymeleaf and GOV.UK Design System desirable Strong experience designing and developing RESTful APIs , including API versioning Experience with OpenAPI / Swagger Strong knowledge of SQL, Spring Data JPA and Hibernate Oracle database experience desirable Experience writing unit and integration tests using JUnit 5 and mocking frameworks Experience with automated UI regression testing, ideally...
Contract Spy
Aug 19, 2026
6 Months or more
Senior Software Engineer (Java) at Expenti, Remote, 12 Months, £Ltd Co Contract Rate
Contract Spy Remote
We are seeking a Backend Java Software Engineer to join our team on a contractual basis. This role heavily focuses on Java, Backend, iGaming Operator Integrations.   This is 1 year extendable contract and applicants must operate through a fully registered limited company to be considered for this role. The role is fully remote, with occasional travel required to our headquarters in Málaga, Spain   What You’ll Do Design, develop and maintain scalable, resilient backend services using Java (17+) and Spring Boot, with a strong focus on quality and a zero-defect mindset. Build and evolve integrations between our iGaming platform and operators, aggregators and other external partners. Design and implement robust REST APIs, asynchronous integrations and event-driven services supporting high-volume, real-time gaming transactions. Develop and maintain common platform capabilities supporting operator integration,...
Contract Spy
Aug 19, 2026
Duration not stated
Senior Full Stack Developer at Deloitte, London/Remote, £Contract Rate
Contract Spy Hybrid (London, UK)
Job description   Job Title: Senior Full Stack Developer (contract) Location: London Hybrid. Travel to the London office 3 days a week Duration: 11 months Contract Start Date: ASAP *note client onboarding takes 6 weeks from offer Day Rate: Competitive (Inside IR35)   Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   The Role We are looking for Senior Full Stack Developers to work in the Technology and Transformation Team at Deloitte. You will work with one of our global financial services clients. This...
Contract Spy
Aug 18, 2026
Duration not stated
Boomi Developer at Numentica, London/Remote, £Contract Rate
Contract Spy Hybrid (London, UK)
Skills & Experience Job roles: Back End Experience level: Mid, Senior Core skills considered: APIs, REST, SOAP, SQL, Java Other skills considered: Groovy, CI/CD, AWS, Azure Logistics Base salary: Undisclosed Employment type: Freelance/Contract Remote working: Hybrid Visa sponsorship: Not available Job Description We are looking for an experienced Boomi Developer to design, build, test and support integration solutions using the Boomi Enterprise Platform. The role requires strong hands-on development skills across APIs, cloud applications, databases and enterprise systems. Key Responsibilities Develop and maintain integration processes using Boomi. Build integrations between cloud and on-premises applications. Configure Boomi connectors, maps, profiles, process properties and environment extensions. Develop REST,...
Contract Spy
Aug 18, 2026
Duration not stated
Quadient Developer at HMRC, UK, £Contract Rate
Contract Spy UK
Quadient Developer     Temporary   Competitive We want to maximise the potential of everyone who chooses to work for us. We offer a great work life balance. You have the opportunity to work at any of our brand-new Regional Centres and to also work remotely. Contracts vary in length dependent upon the project with the possibility to extend. Your time spent with us short or long term will be invaluable - your skills and expertise are needed to deliver the largest digital and transformation projects in Government. There really couldn’t be a better time to join HMRC for your new contract opportunity! Job summary Discover a career in your hands at HMRC. Whether you're seeking purpose, growth, or a workplace that gives you a true sense of belonging, hear from some of our employees as they share their story about what it’s really like to work at HMRC. Are you an experienced document...
Contract Spy
Aug 13, 2026
Duration not stated
Digital Data Analytics - T Level Examiner at Pearson, United Kingdom, £Contract Rate
Contract Spy UK
What are T Levels? T Levels are new courses coming in September 2020, which will follow GCSEs and will be equivalent to three A levels. These two-year courses have been developed in collaboration with employers and businesses, so that the content meets the needs of industry and prepares students for work. T Levels will offer students a mixture of classroom learning and ‘on-the-job’ experience during an industry placement of at least 45 days. They will provide the knowledge and experience needed to open the door into skilled employment, further study or a higher apprenticeship. The Role The T Level Examiner role is an excellent opportunity to earn some extra money in a contract role, alongside any full-time commitments you may have, whilst also developing your career in education. T-Level Examiners mark candidate responses in accordance with a pre-defined mark scheme, whilst adhering to the Code of Practice and published examination...
Contract Spy
Aug 12, 2026
Duration not stated
Senior Full Stack Developer at Deloitte, London/Remote, £Contract Rate
Contract Spy London, UK
Contract - Senior Full Stack Developer Job description Job Title: Senior Full Stack Developer (contract) Location: London Hybrid. Travel to the London office 3 days a week Duration: 11 months Contract Start Date: ASAP *note client onboarding takes 6 weeks from offer Day Rate: Competitive (Inside IR35) Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte. The Role We are looking for Senior Full Stack Developers to work in the Technology and Transformation Team at Deloitte. You will work with one of our global financial services clients. This position requires a solid understanding of Development...
Contract Spy
Aug 10, 2026
Duration not stated
Senior Next.js Developer at Scrumconnect, Swansea, £400-£425 per day
£400 - £425 per day
Contract Spy Swansea, UK
£400-£425 Inside IR35 City Swansea Country United Kingdom Postal Code SA1 About Scrumconnect Consulting Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful and innovative technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens. We are passionate about user-centred design, agile delivery, and building digital services that make a real difference. Our teams work at the forefront of innovation, helping organisations transform and deliver high-quality, scalable solutions that truly matter. Role Overview We are seeking a talented and experienced Senior Next.js Developer at SFIA Level 4 to join our multidisciplinary agile teams and help deliver world-class digital services for UK government clients. In this role, you will lead the development of modern, accessible, and performant front-end applications using...
Contract Spy
Aug 25, 2026
6 Months or more
Lakeformation Java Python Software Engineer - SC Cleared at Department for Work & Pensions, UK Wide, 12 Months, £Contract Rate
Contract Spy United Kingdom
SC Clearance is an essential requirement for this role, as a minimum you must be willing & eligible to undergo checks. Please note, due to the exceptional requirements of this position (short-term nature of this role and speed at which we require a postholder in situ) preference may be given to candidates who meet all of the essential criteria and hold active SC clearance.    DWP is seeking a Senior Software Engineer to support the ongoing development and enhancement of a large scale AWS hosted data platform. Working within a highly secure environment, you will contribute to both live services and future platform developments, helping ensure the secure management and processing of critical production data.   As a Senior Software Engineer , your main responsibilities will be to: Develop and enhance software solutions supporting a large scale AWS hosted data platform. Work with production data, ensuring security, resilience and operational...
Contract Spy
Aug 25, 2026
Duration not stated
Lead Java Developer at Inspired Thinking Group (ITG), Birmingham, £Contract Rate
Contract Spy Birmingham, UK
Our Digital Engineering team at ITG are responsible for building world class, enterprise grade digital applications for high profile brands. We pride ourselves in working with mature Agile methodologies and make use of the latest versions of technology. Our teams are structured in such a way that gives every employee the opportunity to learn new skills, work on various projects over time and see the results of your efforts in the online consumer marketplace. Joining the Digital Engineering function would see you work as part of a cross-functional, product style team, generally consisting of a Business Analyst, Scrum Master / Project Manager, Solution Architect, Lead Developers (FE and BE), Developers, and Testers (Manual and Automated). ITG require a talented Lead Java Developer to work on the development of a range of web based products and tools. Lead Java Developers are responsible for building and maintaining a range of websites and applications for our clients,...
Contract Spy
Aug 24, 2026
Duration not stated
Application Support Engineer (Windows & Enterprise Applications) at Xoriant, London, £Contract Rate
Contract Spy London Area, United Kingdom
Application Support Engineer (Windows & Enterprise Applications) Contract 12+ months (Inside IR35) Hybrid (2 days a week)   Job purpose Provide 2nd and 3rd line production operational support for our Business Systems, many of which are critical business. Provide remote and on-site support as part of the on-call support Rota. Take a lead role with the delivery of application releases for minor/major projects and programs.   Responsibilities Provide remote and onsite and support for our internally developed business critical applications and 3rd Party vendor packages through Dev, UAT Test and Prod. Manage and escalate problems as appropriate. Investigate defects or problems; work with the internal teams and external vendors to identify workarounds and support any fixes that are required as part of service improvement. Implement changes or fixes to applications. Support other technical changes being made which affect...
Contract Spy
Aug 20, 2026
Duration not stated
Application Support Engineer (Windows & Enterprise Applications) at Xoriant, London, £Contract Rate
Contract Spy London Area, United Kingdom
Application Support Engineer (Windows & Enterprise Applications) Contract 12+ months (Inside IR35) Hybrid (2 days a week)   Job purpose Provide 2nd and 3rd line production operational support for our Business Systems, many of which are critical business. Provide remote and on-site support as part of the on-call support Rota. Take a lead role with the delivery of application releases for minor/major projects and programs.   Responsibilities Provide remote and onsite and support for our internally developed business critical applications and 3rd Party vendor packages through Dev, UAT Test and Prod. Manage and escalate problems as appropriate. Investigate defects or problems; work with the internal teams and external vendors to identify workarounds and support any fixes that are required as part of service improvement. Implement changes or fixes to applications. Support other technical changes being made which affect...
Contract Spy
Aug 19, 2026
Duration not stated
Full Stack Developer at Deloitte, London/Remote, £Competitive Rate
Contract Spy Hybrid (London, UK)
Job description   Job Title: Full Stack Developer (contract) Location: London Hybrid. Travel to the London office on 3 days a week Duration: 11 months Contract Start Date: ASAP *note client onboarding takes 6 weeks from offer Day Rate: Competitive (Inside IR35)   Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   The Role We are looking for an experienced Full Stack Developers to work in the Technology and Transformation Team at Deloitte. You will work with one of our global financial services clients. This...
Contract Spy
Aug 19, 2026
6 Months or more
Senior Data Engineer at LTM Limited, Sheffield, 6 Months, £65 per hour
Contract Spy Sheffield, UK
Role description Role Senior Data Engineer Sheffield, UK 6 Months contract Rate: 65 GBP per hour inside IR35     Experience 7 to 11     Responsibilities Design build and maintain largescale data pipelines and ETL workflows across enterprise datasets Ingest provision and manage raw enriched and curated data assets for analytics platforms Improve reliability scalability and realtime data ingestion capabilities Support and enhance cloudbased data ingestion infrastructure and platform services Acquire transport clean transform and integrate data from internal and external sources Perform exploratory data analysis and onboard new data sources Develop automated data engineering workflows and optimize data processing pipelines Manage data modelling data warehousing data integration and data cataloguing activities Support realtime analytics and streaming data platforms Contribute to cloud...
Contract Spy
Aug 18, 2026
Duration not stated
Application Support Engineer (Windows & Enterprise Applications) at Xoriant, London, £Contract Rate
Contract Spy London Area, United Kingdom
Application Support Engineer (Windows & Enterprise Applications) Contract 12+ months (Inside IR35) Hybrid (2 days a week)   Job purpose Provide 2nd and 3rd line production operational support for our Business Systems, many of which are critical business. Provide remote and on-site support as part of the on-call support Rota. Take a lead role with the delivery of application releases for minor/major projects and programs.   Responsibilities Provide remote and onsite and support for our internally developed business critical applications and 3rd Party vendor packages through Dev, UAT Test and Prod. Manage and escalate problems as appropriate. Investigate defects or problems; work with the internal teams and external vendors to identify workarounds and support any fixes that are required as part of service improvement. Implement changes or fixes to applications. Support other technical changes being made which affect...
Contract Spy
Aug 18, 2026
Duration not stated
Lead Java Developer at Inspired Thinking Group (ITG), Birmingham, £Contract Rate
Contract Spy Birmingham, UK
Our Digital Engineering team at ITG are responsible for building world class, enterprise grade digital applications for high profile brands. We pride ourselves in working with mature Agile methodologies and make use of the latest versions of technology. Our teams are structured in such a way that gives every employee the opportunity to learn new skills, work on various projects over time and see the results of your efforts in the online consumer marketplace. Joining the Digital Engineering function would see you work as part of a cross-functional, product style team, generally consisting of a Business Analyst, Scrum Master / Project Manager, Solution Architect, Lead Developers (FE and BE), Developers, and Testers (Manual and Automated). ITG require a talented Lead Java Developer to work on the development of a range of web based products and tools. Lead Java Developers are responsible for building and maintaining a range of websites and applications for our clients,...
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