15 java software engineer jobs found

Java / Microservices / API design / LLMs / AI / Claude Code / Copilot Company: Financial Services Location: London - Hybrid 3 days per week Rate: £575 IR35: Outside CORE BANKING AND TRADING SYSTEMS EXPERIENCE ESSENTIAL Join a newly formed Service Modernisation & AI team driving AI-first software development in financial services. This is a hands-on role modernising high-impact legacy services while building AI-powered engineering workflows. What You’ll Do * Modernise critical legacy Java services using AI-driven analysis and refactoring * Apply migration patterns (e.g. strangler fig) to deliver clean, modern APIs * Ship improvements in fast cycles with measurable gains in performance and reliability * Build AI-powered tooling, including MCP servers and AI-assisted CI/CD pipelines * Demonstrate how AI transforms developer productivity and code quality What We’re Looking For * 6+ years’ backend engineering experience (Java) * Proven experience...

World Class Defence Organisation is currently looking to recruit a Java Software Engineer subcontractor on an initial 12 month contract.     Job Title: Java Software Engineer Rate: £65.00 per hour Location: Bristol Hybrid / Remote working: The role will be onsite – a compressed 4 day week (Monday to Thursday is fine) Contract: 37 Hours per week Overtime: Hours worked over 37 hours per week will be calculated at ‘time and a quarter’ Duration: 12 Months (initially and then ongoing and long-term thereafter) IR35 status: Inside IR35 (Umbrella)                                                                                                                                           Interview Process: One stage Video Interview Java Software Engineer Job Description: The team, at the Bristol facility, develop solutions for the next generation of Air Defence Systems; developing evolving products whilst maintaining their enviable reputation for safety, performance and dependability. This...

World Class Defence Organisation is currently looking to recruit a Java Software Engineer subcontractor on an initial 12 month contract.    Job Title: Java Software Engineer Rate: £65.00 per hour Location: Bristol Hybrid / Remote working: The role will be onsite – a compressed 4 day week (Monday to Thursday is fine) Contract: 37 Hours per week Overtime: Hours worked over 37 hours per week will be calculated at ‘time and a quarter’ Duration: 12 Months (initially and then ongoing and long-term thereafter) IR35 status: Inside IR35 (Umbrella)   Java Software Engineer Job Description: The team, at the Bristol facility, develop solutions for the next generation of Air Defence Systems; developing evolving products whilst maintaining their enviable reputation for safety, performance and dependability. This is a very hands-on role and requires the continued design and development of new and evolving software tools and architectures, and the instantiations for future products. Perfect...

Software Engineer 12 Month Contract Newcastle or Guildford (Hybrid) up to £70 per hour Role Overview Belcan are currently working with one of the leading companies in Aviation, to support them in their search for a Software Engineer. The Software Engineer will join their collaborative, forward-thinking Agile Scrum team, working on innovative Geospatial software, using the latest cloud-based technologies. The engineer will be involved in every stage of the software development lifecycle, from initial design through development, testing, and deployment, delivering robust, scalable cloud-based services. The role is based at the clients Newcastle or Guildford office. Flexible working arrangements are in place for the team. The successful candidate is expected to be in the office 3 days a week, with the opportunity to work 2 days from home. Responsibilities Develop high-quality, readable, scalable and easily maintained code, using Java and related technologies, meeting...

IDAM Back-end Java Developer - SC Cleared Rate: £500 - £535 a day IR35: Inside IR35 Location: Remote within the UK Duration: Initially 6 months Clearance: Active SC Clearance required You will join a global IT consultancy who are delivering digital transformation to public sector body. They are looking for a back-end Java Developer with proven IDAM (Identity and Access Management) experience. You will be part of a continuous improvement squad delivering enhancements and new features alongside BAU work (i.e. incidents and support maintenance activities). In addition, you will be involved in helping our client transform their IDAM service, re-platforming to Azure Kubernetes Service. You will have a solid understanding of modern deployment pipelines and DevOps principles. The role will require providing out of hours support (i.e. Monday to Saturday once per month). As a Senior Software Engineer with a focus on back-end development, you will play a key role in designing,...

Our client has an opportunity for a Software Engineer to join them on a contract basis for 12 months. You will be joining a collaborative, forward thinking Agile Scrum team, working on innovative Geospatial software, using the latest cloud-based technologies. Role: Software Engineer Location: Newcastle or Guildford Hours: 35 per week Hourly Rate: £70 per hour via Umbrella, inside IR35 Clearance: UK Eyes only project, SC required before starting - active SC on application is preferred What you'll be doing: Develop high-quality, readable, scalable and easily maintained code, using Java and related technologies, meeting requirements and coding standards. Develop reusable patterns and encourage innovation that will enhance team velocity. Contribute to quality assurance by writing unit and automated tests. Conduct design and code reviews to ensure code developed meets coding best practices guidelines, unit testing, security, and scalability and maintainability guidelines Ensure...

Our client has an opportunity for a Software Engineer to join them on a contract basis for 12 months. You will be joining a collaborative, forward thinking Agile Scrum team, working on innovative Geospatial software, using the latest cloud-based technologies. Role: Software Engineer Location: Newcastle or Guildford Hours: 35 per week Hourly Rate: £70 per hour via Umbrella, inside IR35 Clearance: UK Eyes only project, SC required before starting - active SC on application is preferred What you'll be doing: Develop high-quality, readable, scalable and easily maintained code, using Java and related technologies, meeting requirements and coding standards. Develop reusable patterns and encourage innovation that will enhance team velocity. Contribute to quality assurance by writing unit and automated tests. Conduct design and code reviews to ensure code developed meets coding best practices guidelines, unit testing, security, and scalability and maintainability guidelines Ensure...

Senior Software Engineer in Test Contract | Inside IR35 | £400 per day Location: Manchester (Hybrid - 2-3 days onsite per week) Contract End Date: March 2027 I'm currently working with a large, well‑established enterprise client who are continuing to grow their digital engineering capability in Manchester. They are looking to engage an experienced Senior Software Engineer in Test on a long‑term contract to support the delivery of high‑quality, scalable, cloud‑based digital platforms. This is an excellent opportunity for a senior‑level test professional to join a collaborative, agile environment where quality, automation, and engineering best practice are taken seriously. The role offers strong delivery stability with a contract running until March 2027. The Role You'll join a multi‑disciplinary digital engineering team, working closely with developers, SREs, and other engineers to embed quality throughout the software delivery lifecycle. The focus is on automation‑led...

Java Developer - IDAM/ IDM SME - SC Cleared - £550 - £650 per day - remote with occasional travel Developer - IDAM/IAM SME SC Cleared - £550 - £650 per day We are looking for a Developer with very strong and proven IDAM (Identity and Access Management) experience for a large Government client. You will be part of a continuous improvement squad delivering enhancements and new features alongside BAU work (i.e. incidents and support maintenance activities). In addition, you will be involved in helping our client transform their IDAM service, re-platforming to Azure Kubernetes Service. You will have a solid understanding of modern deployment pipelines and DevOps principles. The role will require providing out of hours support (i.e. Monday to Saturday once per month). Java Developer - IDAM/ IDM experience - SC Cleared - £500 - £600 per day - remote with occasional travel As a Senior Software Engineer with a focus on back-end development, you will play a key role in designing,...

Job title: Senior Software Engineer in Test (D) Location: Manchester Duration: 11 Months (rolling) Hourly rate: £57.00ph INSIDE IR35 (Via Umbrella Solutions) POSITION DESCRIPTION: A Senior Software Engineer in Test with a passion for quality, and proven experience of automated software testing, is required for a variety of digital projects being delivered for Luxury Automotive client based in Manchester. We are looking for great engineers who have a passion for innovative problem solving, quality-first coding and practicing Continuous Integration. Would you thrive in an exciting, dynamic and creative start-up environment, but also enjoy the security, resources and influence of an established and successful organisation? Would you excel within a world-class and passionate team that loves what they do? Are you passionate about mentoring and sharing your skills with fellow engineers? You will form part of a collaborative, iterative and agile process in a multi-disciplined team helping...

Role: Principal Site Reliability Engineer (Platform / DevOps) Location: Wokingham (Reading) - Hybrid (60% remote / 40% onsite) Duration: 6 Months+ Rate: £500-£520 per day Clearance: Active SC Clearance required (mandatory) Overview We are seeking an experienced Principal SRE / Platform Engineer to lead platform-first initiatives focused on scalability, reliability, and performance across distributed systems. This role requires strong DevOps expertise and the ability to design and maintain resilient cloud-based infrastructure. Key Responsibilities Lead platform-first engineering initiatives to enhance scalability and reliability Design, build, and maintain resilient infrastructure for distributed systems Implement monitoring and alerting solutions to ensure high availability Collaborate with engineering teams to improve system reliability and mitigate risks Develop and maintain CI/CD pipelines to support efficient deployments Recommend ongoing improvements to platform...

The Opportunity Our client is recruiting for a high-impact Frontend Specialist to join the Fintech & Compliance division of a global leader in the travel-commerce and e-commerce space. In this role, you aren't just building "another website." You are the architect of the sophisticated internal tools that protect millions of global transactions. You will transform complex regulatory and fraud-prevention workflows into intuitive, high-performance analyst experiences. The Tech Ecosystem You will be working in a modern, distributed environment that prioritizes engineering excellence: Core Stack: React, Next.js, and TypeScript. Architecture: Micro-frontends (Capla/Vue) and Module Federation. Data: Integrating with Java/Spring Boot services via REST and GraphQL. Cloud & DevOps: Kubernetes (BKS), AWS, and advanced observability (Metrics, Dashboards, Alerts). What You Will Do End-to-End Ownership: Own the design, implementation, and deployment of frontend features with...

World Class Defence Organisation is currently looking to recruit 3x C++ Application Software Engineer subcontractors on an initial 12 month contract.     This role requires: Strong experience in C++ application development. A strong background in software engineering, its realisation and system wide impact. Experience in CI/CD pipelines, GitLab, Docker. Experience of developing software for virtual environments.  Rate: £65.00 per hour Location: Bristol Hybrid / Remote working: The role will likely be onsite – a compressed 4 day week (Monday to Thursday is fine).  There may be some scope for hybrid working (project dependent). Contract: 37 Hours per week Overtime: Hours worked over 37 hours per week will be calculated at ‘time and a quarter’ Duration: 12 Months (initially and then ongoing and long-term thereafter) IR35 status: Inside IR35 (Umbrella)...

Software Engineer Certain Advantage is hiring for a Software Engineer based in the Guildford or Newcastle area. This role is on a contract basis and is hybrid-based. The Company We’re working with a Manufacturing business that operates in the Aerospace sector. They design, manufacture and deliver industry-leading commercial aircraft, and a separate Space and Defence division. Does this sound like your next career move? If you’re ambitious to grow, this may be your next role? The Role: This role is for a Software Engineer —someone ambitious and ready to make an impact. You’ll be results-oriented and driven to succeed. You’ll be working in a small, experienced, and collaborative team, and be responsible for: High-quality, readable, scalable and easily maintained code, using Java. Contribution to quality assurance by writing unit and automated tests. Design and code reviews Sprint planning, reviews, and daily stand-ups in a true Agile environmentThe Individual We’re looking for...

Software Engineer (Java) SC Clearance Required Certain Advantage are hiring for a Software Engineer based in Portsmouth. This role is on an initial 12-month contract and is required to be onsite 3 days a week.   Your responsibilities: Contribute across the full software development lifecycle, including design, development, testing, and deployment. Design software solutions using UML/SysML and contribute to technical architecture within a microservices environment. Develop high-quality Java applications using Spring Boot, Spring Framework and related technologies. Implement and maintain RESTful web services over HTTPS within distributed systems. Write and maintain automated tests, ensuring quality and reliability are built into the solution from the outset. Participate in Agile ceremonies including sprint planning, estimation, reviews and retrospectives. Collaborate closely with team members and wider stakeholders to design, implement and test new product features. Contribute...