12 java developers jobs found

Senior Java Software Engineer (Contractor) UK-Based | Fully Remote Outside IR35   Contract to Dec 2026 We are supporting a global engineering and technology organisation in the search for a Senior Java Software Engineer (Contractor) to join their Performance Engineering & Research team. This is a fully remote opportunity (UK-based candidates only) working on robust, scalable software that supports sophisticated control algorithms and performance optimisation systems. The Role You will design, build and maintain efficient, high-performance Java applications, contributing across the full software development lifecycle including: Requirements analysis and system design Development and implementation Testing and deployment CI/CD and automation improvements Technical documentation Working under the guidance of the Principal Performance Engineer, you will collaborate with solution design, integration, simulation and delivery teams globally. What We’re Looking For Minimum 5...

Java Developer Location - Remote with some ad hoc travel to London 6 months £468 per day inside IR35 Active SC clearance required Skills: The ability to work with data throughout its lifecycle, from collection and storage to processing and analysis. Data developers are responsible for designing, implementing and maintaining the systems and infrastructure needed to handle large volumes of data. They work on integrating data from a variety of sources, ensuring that different data sets can be effectively combined and analysed. They can also utilise programming languages such as Python, Java or SQL and tools such as Apache Spark or in this instance LakeFS, for data processing and management. Useful - R, Apache Spark Very useful - Python, SQL, JSON, LakeFS

Pontoon is an employment consultancy. We put expertise, energy, and enthusiasm into improving everyone's chance of being part of the workplace. We respect and appreciate people of all ethnicities, generations, religious beliefs, sexual orientations, gender identities, and more. We do this by showcasing their talents, skills, and unique experience in an inclusive environment that helps them thrive. Job Title: Lead UI Developer / React Contract: Initial 12-Month Contract with potential to extend. Location: London Rate: £800 inside umbrella What You'll Do: As the Lead UI Developer, you will spearhead the development of our flagship Triforce Credit Project. You will be responsible for designing and implementing cutting-edge user interfaces that cater to front office e-trading applications. Your expertise will ensure that our software is not only highly functional but also delivers an exceptional user experience. Key Responsibilities: Lead the development of front office...

Fullstack Developer – Palantir Foundry job in London – £750 - £1000 a day – London – Outside IR35 Hexwired Recruitment is recruiting for an expanding Solutions provider, now seeking Data Engineers and Fullstack Developers with solid experience working on Palantir Foundry’s data analytics dashboard. You will be working on the full product lifecycle for a range of customers within Finance, energy and more. The successful candidate must have good experience on both the API development and backend data management side of Palantir’s products. Initial 3 months with very likely extension. Outside IR35 and will require at least 3 days onsite. Key Skills: * Bachelors in CS, Maths, Physics or similar * 3+ commercial Palantir Foundry dashboard experience * Solid experience building applications using Palantir Foundry * Excellent Data Engineering experience using Palantir Foundry * Company is agnostic on programming languages, Python, Java, Typescript and/or React...

Front End Developer - Active SC Up to £550 per day - Inside IR35 London / Remote 6 months My client is an instantly recognisable consultancy who require Front End Developers with Active SC Clearance to join a business-critical programme for an end client within the Public Sector. Key Requirements: Proven commercial experience working as a Front-End Developer within the Public Sector. Active SC Clearance. NPPV3 Clearance eligibility. Hands‑on React and TypeScript experience across large microservice architectures. Proficiency in test‑driven development (e.g., JUnit, Mockito) and building robust, well‑tested applications. Skilled in containerisation with Docker and relational databases such as Postgres (Liquibase exposure beneficial). Experienced with CI/CD pipelines and modern DevOps practices (e.g., Jenkins or similar tooling). Familiarity with Swagger/OpenAPI, Gradle, Liquibase, Kafka, Java (Spring Boot). Comfortable working in Agile environments and collaborating across...

Hiring: Java Software Engineer 📍 UK-Based | 🏠 Remote | 📅 12‑month contract | 450 per day I'm currently supporting the search for a highly capable Java Software Engineer looking to transition into Architecture to join a major transformation programme, leading the migration from on‑prem services into Azure. This isn't a junior role in experience - we're looking for someone with high-level architectural capability, strong communication skills, and the confidence to guide and oversee the work of experienced engineers. What You'll Be Doing 🔹 Supporting the Senior Architect across a large-scale cloud migration 🔹 Shaping data pipelines, data flows, and system-wide design 🔹 Providing architectural oversight to senior developers 🔹 Working across Java, Python and large data environments (design > coding) 🔹 Bringing a strong, assertive technical voice to ensure delivery stays on track What we're looking for: ✔ Strong Java engineering experience ✔ Exposure to cloud migration...

Job Opportunity: Senior SSO Developer (Java) Location: D18 - full time onsite Contract Length: 6 months initially Working Pattern: Full Time Are you ready to take your software development skills to the next level? Our client is looking for a talented Software Developer who thrives in a dynamic environment and is passionate about delivering high-quality solutions. If you have a flair for coding and a strong desire to innovate, we want to hear from you! Key Responsibilities: As a Software Developer, you will be at the forefront of transforming complex requirements into impactful solutions. Here's what you'll be doing: Contributing to story refinement and defining requirements. Guiding your team in estimating the work necessary to realize stories through the delivery lifecycle. Conducting spikes and proof of concepts to mitigate risk and explore new ideas. Coding solutions and unit testing to meet defined acceptance criteria and compliance standards. Utilizing various...

Full‑Stack Engineer (FX Trading Applications) Location: London (onsite 3 days per week) Day Rate: £700 (via Umbrella Company) Contract: Fixed Term Contract until 31 December 2026 About the Role Are you ready to dive into the dynamic world of FX Trading technology? Our client is seeking a talented Full‑Stack Engineer with strong Java expertise and a passion for solving complex technical challenges. You'll play a key role in building mission‑critical components that power high‑performance trading systems-working closely with cross‑functional teams in a fast‑paced, agile environment. Key Responsibilities Engineering & Development Design and develop backend and frontend features for FX Trading applications. Write well‑designed, testable, and efficient code across the full stack. Build automated test suites (unit, integration, contract, UI/API, performance). Define metrics and implement automated evaluation and drift detection for AI‑related components. Reduce technical...

Automation Developer Location: Gloucestershire Contract Type: Contract About the Role Guidant Global is supporting our client in recruiting a talented Automation Developer to design, develop, and optimise automation solutions that streamline business processes and enhance operational efficiency. This is a fantastic opportunity for someone with strong scripting skills and an interest in rule engines, workflow automation, and modern integration technologies. You'll work closely with technical and non‑technical stakeholders, identifying process inefficiencies and turning them into scalable, automated solutions that add real value across the organisation. Key Responsibilities Develop, deploy, and maintain automation solutions and applications using Python, JavaScript, and relevant automation tools Identify automation opportunities by analysing existing workflows and business processes Work with stakeholders to gather requirements and translate them into effective technical...

Full Stack Developer (GCP / Java / Python) – Contract – Hybrid Location: London Working Pattern: Hybrid (2–3 days onsite) Employment Type: Contract Role Overview We are looking for an experienced Full Stack Developer to join a platform engineering team delivering modern cloud-native applications. The role involves developing scalable solutions while supporting the transition of legacy monolithic systems to API-driven microservices architectures. You will work closely with engineering and DevOps teams to design, build, and deploy secure applications within a GCP-based cloud environment. Key Responsibilities * Design and develop scalable full stack applications * Build and integrate REST APIs and microservices * Work within Google Cloud Platform (GCP) environments * Support CI/CD pipelines and modern DevOps practices * Contribute to modernising monolithic systems into microservices architectures * Participate in code reviews...

Developer-in-Test (SC Cleared) Southend / Reading (Hybrid) 3 Month Rolling Contract £450/day (Outside IR35) Developer-in-Test needed with active SC Security Clearance and Java coding skills. 3 Month Rolling Contract based in either Southend (Essex) or Reading (Hybrid). Hybrid Working - 3-4 days/week remote (WFH), and 1-2 days/week working on-site from the office. Start ASAP in March 2026. A chance to work with a leading global IT and Digital transformation business specialising in Government projects: Developer-in-Test / SDET with strong Java coding + test automation skills. Government / (url removed) projects experience strongly preferred. Test automation tools experience -eg- Selenium, Serenity or Cucumber. Continuous Integration tools -eg- Jenkins, Stash, Hudson, Github. Testing UI and Web Services systems including end-to-end and in isolation using Mocks. Experience with large datasets + appreciation of data isolation in a multi-tenanted SAAS platform...

World Class Defence Organisation is currently looking to recruit a remote PERL Software Engineer subcontractor on an initial 6 month contract. Job Title:  PERL Software Engineer Rate: £77 - £84 per hour Location: Stevenage Hybrid / Remote working: This role is a remote based role – with just 1 visit to the Stevenage site per month. Contract: 37 Hours per week Overtime: Hours worked over 37 hours per week will be calculated at ‘time and a quarter’ Duration: 6 Months (initially and then ongoing and long-term thereafter) IR35 status: Inside IR35 (Umbrella) PERL Software Engineer Job Description: The Software department are looking for a software developer with experience in the PERL programming language. We require someone who can create and update text-based templates used in Technical Publications authoring and publishing tasks. Knowledge of the Technical Publications publishing process would be an advantage but not a requirement. Assistance in updating and in some cases,...