24 of 24 Contract Java Developer Jobs

Java Developer Hybrid (Belfast) | 6-Month Contract | Inside IR35 Our client, a leading organisation within the financial services sector, is seeking an experienced Java Developer to join their Belfast-based technology team on an initial 6-month contract (Inside IR35). This is an excellent opportunity to work on high-performance, data-driven applications within a … fast-paced enterprise environment. The successful candidate will play a key role in developing and optimising complex batch processing and integration systems using Java 17, Spring Batch, Spring Integration, and GridGain Database. Key Responsibilities Design, develop, and maintain scalable Java 17 applications for enterprise data processing. Build and optimise batch processing solutions using Spring Batch. Design and implement … deployment and operational tasks in Unix/Linux environments. Collaborate with cross-functional technical and business teams to deliver high-quality, reliable solutions. Skills & Experience Required Strong proficiency in Java 17, including modern Java features and best practices. Proven experience with Spring Batch and Spring Integration. Solid understanding of Unix/Linux scripting and SQL. Hands-on experience More ❯

Java Developer Location: Dublin, hybrid working model Term: 12 months, excellent day rate Java Developer wanted to help design and build high-throughput systems for a well-known name in Dublin’s tech scene. You’ll be part of a modern engineering environment offering excellent hybrid flexibility (with some on-site collaboration) and the freedom to … deliver clean, scalable services. This is a great opportunity for a Java developer seeking a long-term contracting role within an organisation that’s heavily investing in modern technologies and innovative approaches. What you’ll bring: 5+ years Java development experience, comfortable working across Spring/Spring Boot microservices etc. Decent hands on skills with Angular, at More ❯

We’re looking for a Senior Java Developer for our public sector client based in Leeds on an initial 12-month contract paying up to £700 per day Inside IR35. This role allows hybrid working with an expectation to attend the office 3 days per week. You will need to either hold current BPSS clearance or have the … ability to pass it, and be eligible for SC clearance. The successful Senior Java Developer will possess proven skills working with the following – Java 21 (or later) Test Driven Development (TDD) and Behaviour Driven Development (BDD) Large microservice architectures Agile environments and pair programming Implementing APIs for internal and external use Building automated test suites in CI … have: Jackson, JAX-RS, Mockito ActiveMQ or Kafka MongoDB or other NoSQL/document databases Experience scaling high-traffic websites and handling large data sets Interested? Please apply below. Java Software Engineer, Java, Java 21, Microservices, TDD, BDD, Agile, APIs, CI/CD, Leeds, Government, Public Sector, Developer, Contract, Inside IR35 More ❯

Senior Java Developer | SC Clearance Required | Up to £650 per day (Inside IR35) | Remote with Monthly Visits to London | 6 Month Contract MERITUS are working with a large consulting organisation looking for a Senior Java Developer on a project working into a UK Central Government client. You'll play a key role in designing, coding, reviewing … and testing solutions within the Java stack , collaborating with developers, testers, and DevOps engineers. The position also involves working on automated tests, infrastructure updates, and maintaining high-quality standards across all stages of development. The role is remote with monthly visits into the London office on an initial 6 Month contract. Main Responsibilities: Design, code, review, and unit test … applications using the Java stack. Collaborate with cross-functional teams, including developers, testers, and DevOps engineers. Support and enhance legacy systems currently in maintenance mode. Contribute to automated testing (C#) and infrastructure improvements (Docker, Ansible, Python, Linux). Required Skills: Proven experience with Java, Spring, Maven, Git, JUnit, and Web APIs (REST/JSON, XML/SOAP). More ❯

Full Stack Java Developer - contractor Location: Dublin | Model: Hybrid Term: 12 months | Rate: Top-tier day rate Full Stack Java Developer required to help shape high-throughput systems for a household name within the Dublin tech scene. You’ll join a modern engineering setup with great working/hybrid flexibility (with some on-site collaboration) and … the autonomy to ship clean, scalable services. Really nice role for a Java developer looking for a long term contracting role working across a very modern tech stack with an organisation investing heavily in new technological ideas and approaches. What you’ll bring: Very strong Java experience, especially building across Spring/Spring Boot microservices etc. Decent More ❯

Sr Lead Java Developer - FX Options - Inside IR35 Central London - Hybrid - 3 days on site, 2 days remote 12 months Brief My client is looking for an experienced Lead Java Developer with hands-on experience integrating Quant libraries to join their FX Options technology team. In this contract, you'll take a hands-on leadership role … and delivering solutions for the front office. Key Responsibilities Lead the design and re-engineering of a core FX Options trading platform. Integrate Quant libraries (typically C++) into a Java-based system - focusing on integration, not C++ development. Deliver high-quality Java UI (Swing) components for front-office users. Work closely with Quants, Traders, and Risk teams to … Provide technical leadership , oversee solution design, and drive best coding practices. Be hands-on in development, debugging, and platform optimisation. Required Skills 5-10 year's experience as a Java Developer within front-office or trading environments. Strong Java Core and Swing Proven experience integrating Quant or pricing libraries . Solid business knowledge of FX Options and More ❯

Sr Lead Java Developer - FX Options - Inside IR35 Central London - Hybrid - 3 days on site, 2 days remote 12 months Brief My client is looking for an experienced Lead Java Developer with hands-on experience integrating Quant libraries to join their FX Options technology team. In this contract, you'll take a hands-on leadership role … and delivering solutions for the front office. Key Responsibilities Lead the design and re-engineering of a core FX Options trading platform. Integrate Quant libraries (typically C++) into a Java-based system - focusing on integration, not C++ development. Deliver high-quality Java UI (Swing) components for front-office users. Work closely with Quants, Traders, and Risk teams to … Provide technical leadership , oversee solution design, and drive best coding practices. Be hands-on in development, debugging, and platform optimisation. Required Skills 5-10 year's experience as a Java Developer within front-office or trading environments. Strong Java Core and Swing Proven experience integrating Quant or pricing libraries . Solid business knowledge of FX Options and More ❯

Low Latency Java Developer eFX Algo IT Developer Join our dynamic eFX Algo IT team as a Java Developer, focusing on low-latency systems. This high-profile role involves developing pricing, hedging, and low-latency order and price distribution systems for the eFX desk. You will be part of a team that includes both Java and C# developers working on server-side and UI components. Required Skills & Qualifications: Proven experience in Java development, specifically in low-latency environments. Strong understanding of FX or similar low-latency trading systems. Experience in front office environments, preferably with exposure to algo trading. Familiarity with connectivity, market data, core pricing, and hedging strategies. Knowledge of Agile, SCRUM … ability to adapt to new technologies. Strong communication skills and the ability to work collaboratively across multiple teams Day-to-day of the role: Develop and maintain low-latency Java applications for pricing, hedging, market connectivity, and associated services. Collaborate with Business Analysts, Project Managers, and QA teams to estimate, plan, and execute development tasks. Engage in hands-on More ❯

Role: Java Developer Location: Hybrid travel to client site 2-3 days per week. Rate Outside IR35: £500.00 - £550.00 Clearance: Active SC Clearance (Must hold Active SC) We are seeking an experienced and hands-on Java Developer with a strong understanding of Java to join our team. The ideal candidate will have a solid background … reporting in the event of delays, proactively manage dependencies, and work with team members to resolve issues impacting delivery. Required Qualifications: - Minimum of 3 years of experience as a Java Developer. - Strong understanding of functional programming principles and Test-Driven Development (TDD). - Experience with relational and NoSQL databases. - Familiarity with cloud platforms such as AWS, Azure, or GCP. More ❯

SC + NPPV3 Cleared Java Developer - 6 months+ - £Inside IR35 - Remote with occasional travel to London Please note: Candidates must have a current and active SC and NPPV3 Clearance- unfortunately, applications without this cannot be considered. Looking for a number of SC + NPPV3 Cleared Java Developers to work on a Law Enforcement programme. Key Responsibilities: Work … on data mapping and report writing in Java. Essential Skills: Java AWS Spring Boot Kafka Desirable Skills: React JavaScript SC + NPPV3 Cleared Java Developer - 6 months+ - £Inside IR35 - Remote with occasional travel to London Damia Group Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying More ❯

Senior Java Developer Contract Dublin 6-18 Months. My client a leading global name is in urgent need of a talented and experienced Senior Java Developer to join their team on a contract basis 6 months initially rolling up to potentiality 18-20 months. My client is looking for a senior developer to perform hands … and knowledge sharing activities and grow your network of top-notch people who are best at what they do. Successful candidates will have 10+years of commercial experience in core Java/J2EE application development and object-oriented design. Strong skills in multi-threading, collections framework, JDBC and knowledge of Java profiling tools. Proficiency with frameworks just as Spring More ❯

Role: Java Developer Location: Remote Inside IR35 £550.00pd Must Hold Active SC Clearance We are seeking a JBOSS Developer to join our team. In this role, you will have the opportunity to work closely with stakeholders and team members while leveraging your expertise in Red Hat JBoss Enterprise Application Platform and alternative J2EE Application Servers. Key Skills … with the Authority team to refactor or redevelop existing application components currently dependent on JBoss to operate within the selected technology stack, including: - Remove backend functionality that requires proprietary Java where required. - Change front-end interactions that require proprietary Java to use the new solution where required. - Update and/or change authentication mechanisms (Keycloak) and remove the … and adapting appropriate software development methods, tools, and techniques. - Collaborate with the Authority project team to drive technical development across all stages and iterations of software development. Key Competencies: - Java - Java Enterprise Editions (JEE) - Keycloak More ❯

Senior Java Developer Join one of Galway’s most respected tech teams, a company known for high employee satisfaction, genuine flexibility, and solving complex problems with modern tech. We’re assembling a new team of engineers to design and build high-performance, secure, and scalable applications at the forefront of digital ownership and blockchain innovation . Data is … it’s processed, engineered, and used to deliver real impact. What you’ll do Build and scale large-scale enterprise applications used by millions. Work hands-on with modern Java, Spring Boot, and cloud technologies (AWS a plus). Collaborate in Agile squads alongside top-tier engineers. Get involved in next-gen technologies - Blockchain, AI Agents, and advanced data … engineering. What you bring 5+ years’ experience building modern web apps with Java. Expertise in Java, Microservices, Spring Boot, and Cloud (AWS preferred). Exposure to modern JavaScript/TypeScript frameworks is a nice to have, they have many applications running on Angular, & Node. Solid grasp of CI/CD pipelines and test-driven development. An agile mindset and More ❯

Harvey Nash has an urgent requirement for Java Developer for a public sector client in Edinburgh. 10 week contract Inside of IR35 £425 - £450 a day Two days a week onsite in Edinburgh Candidates must have a valid Disclosure Scotland check The Role Upgrade our clients application from Spring 2.5 and Spring Security 2.0.8 to Spring Framework 5.3.x … and Spring Security 5.8.x. We are looking for the following experience: Experienced Java development (Java 8/11/17). Spring Framework (MVC, transactions, Security). Proven migration experience from Spring 2.x/3.x ? 5.x/6.x Hibernate/JPA, including upgrade to Hibernate 5.6. Experience remediating security vulnerabilities (CVE mitigation, CSRF/session handling). Strong More ❯

Senior Java Developer Location: Galway Model: Hybrid Term: 12+ months | Rate: Top-tier day rate Senior Java required for a great long term contracting role. You’ll work in modern technology department focussing on a small number of enterprise projects. There’ scope and variety in the role with a range of modern tools, tech and processes. Even … as a contractor there’s a strong chance you’ll get to work on tools and tech that are new to you. Desired Skills/Experience 5+ years Java development experience Strong experience across Spring/Spring boot building out microservices Ideally some exposure to modern JavaScript/TypeScript frameworks, not essential but would be nice. An interest in More ❯

A Java Developer is required for an initial 12 month contract. This is a hybrid role with 2 days per week on site in Knutsford and is inside IR35 so will require working via an FCSA accredited umbrella company. Required Skills and Experience: - Strong proficiency in Core Java programming with at least 5+ years of hands-on … and RESTful API design - Experience with containerization technologies (Docker, Kubernetes) - Understanding of agile development methodologies - Experience with test-driven development and automated testing frameworks Responsibilities: - Design, develop, and maintain Java-based applications using Spring and Hibernate - Collaborate with cross-functional teams to define, design, and ship new features - Optimize application performance and scalability - Troubleshoot and resolve production issues as More ❯

Lead Developer - Live Services Java Patching Rate: £508 per day Start Date: 24th November (TBC) Location: Remote/On-site as required Telford Security Clearance: Active SC preferred due to timescale of the project We are seeking an experienced Lead Java Developer to oversee and deliver a critical Live Services Java Patching Programme within Central … Government. This role involves upgrading legacy Java applications to meet contractual and compliance requirements, ensuring continued stability, performance, and security across live environments. The successful candidate will take a leading role in planning, coordinating, and executing the patching exercise, working closely with a small development team and key stakeholders to deliver high-quality outcomes. Key Responsibilities: Lead the end … to-end Java patching and upgrade process for live Central Government services. Ensure all upgrades meet technical, contractual, and security compliance standards. Collaborate effectively with development teams, project managers, and service owners. Provide technical leadership, mentoring, and quality assurance within the team. Maintain comprehensive documentation and reporting throughout the upgrade lifecycle. Essential Skills and Experience: Proven expertise in Java More ❯

Fidessa Developer - Java/Spring - sought by investment bank based in London - Contract - Hybrid *inside IR35* Key Responsibilities Develop and customise the Fidessa cash equities order management systems for US and Canadian markets. Translate business requirements into technical solutions using Fidessa and Java. Collaborate with global teams to deliver high-quality solutions. Provide mentorship to new team members … line technical issues as needed. Essential Skills & Experience 5+ years of hands-on development experience with the Fidessa trading platform . Strong understanding of equities trading . Proficiency in Java (including Spring framework) and Python . Excellent interpersonal, communication, and organisational skills. Desirable Skills Knowledge of other asset classes in Capital Markets. Experience with tools such as GitHub, Maven More ❯

Fidessa Developer - Java/Spring - sought by investment bank based in London - Contract - Hybrid *inside IR35* Key Responsibilities Develop and customise the Fidessa cash equities order management systems for US and Canadian markets. Translate business requirements into technical solutions using Fidessa and Java. Collaborate with global teams to deliver high-quality solutions. Provide mentorship to new team members … line technical issues as needed. Essential Skills & Experience 5+ years of hands-on development experience with the Fidessa trading platform . Strong understanding of equities trading . Proficiency in Java (including Spring framework) and Python . Excellent interpersonal, communication, and organisational skills. Desirable Skills Knowledge of other asset classes in Capital Markets. Experience with tools such as GitHub, Maven More ❯

We are a Global Recruitment specialist that provides support to the clients across EMEA, APAC, US and Canada. Role Title: Java Developer Location: Farnborough Duration: 31/12/2025 Work setup: 3 days onsite Rate : £322/hr on umbrella Role Description: Have experience working with Java 17 or later Have experience working in Spring ecosystem More ❯

Harvey Nash has an urgent requirement for Java Developer for a public sector client in Edinburgh. 10 week contract Inside of IR35 £425 - £450 a day Two days a week onsite in Edinburgh Candidates must have a valid Disclosure Scotland check The Role Upgrade our clients application from Spring 2 click apply for full job details More ❯

Senior Java Engineer Location: London (1-2 days a week in the office, mandatory on Thursdays) Experience: Minimum 8-10 years Technical Skills: Proficiency in Java 8 (transitioning to Java 17) Retail banking experince Python Experience with Spring Boot 2.4 and above Knowledge of Continuous Integration Apigee Java Testing API experience If all the above skills More ❯

Role:JAVA Full Stack Developer Job Type - Glasgow, Hybrid (3 5 days onsite) The Role As a JAVA Full Stack Lead Software Engineer with our client, you will play a crucial role in an agile team, focusing on the enhancement, construction, and delivery of top-tier technology products in a secure, stable, and scalable manner. Key Responsibilities … to 10, avoid repetition): Hands-on practical experience in System Design, Application Development, Testing, and operational Stability. Experience in developing, debugging, and maintaining with technologies and frameworks such as Java, J2EE, Microservices, Spring Boot, Spring Cloud, Angular, JavaScript, and REST API. Exposure to Database Servers such as Oracle and NoSQL databases such as Cassandra. Knowledge in Database ORM frameworks More ❯

I am recruiting for a number of Senior Java Developers to work in Leeds 3 days a week, 2 days remote. The role falls inside IR35 so you will be required to work through an umbrella company. I am searching for outstanding skills and someone who must be ready to quickly get to work within an Agile, multidisciplinary team … you will be an integral part of that team in designing, creating and improving new and existing products, platforms and transactions across government. Candidates must have recent experience with Java 21 (or later). An excellent understanding of TDD and BDD and large microservice architectures is essential. You will have experience of working in an Agile environment and be More ❯