33 contract java developer jobs found

Contract Senior Java Data Engineer 📍 London or Birmingham 📆 12‑Month Contract 💷 £500–£600 per day 🧾 Outside IR35 Opus is partnered with a major financial services organisation to build out a high‑performing engineering squad focused on distributed data processing and large‑scale workflow modernisation. This role sits at the intersection of Java engineering , distributed data , and cloud-native pipelines ideal for someone who comes from a JVM engineering background and has expanded into Spark, AWS Glue, or large‑scale data processing. You’ll help re‑platform existing workflows, optimise framework performance, and build new services that feed critical reporting pipelines used across the business. What You’ll Be Doing Building and enhancing Java‑based data services and distributed processing components Re‑engineering legacy pipelines into scalable AWS/Spark workloads Upgrading the framework for several business‑critical reporting workflows...

Java Developer Birmingham (Hybrid) 6 Month Contract £450-500/day (Outside IR35) Java Developer needed with both active SC Clearance and NPPV3 Security Clearance. 6 Month Contract based in Birmingham (Hybrid). Paying up to £450-500/day (Outside IR35). Start ASAP in Feb/March 2026. Hybrid Working - 3 days/week remote (WFH), and 2 days/week working on-site in the Birmingham office. Occasional travel to the Croydon office, typically once every 1-2 months. A chance to work with a leading global IT transformation business specialising in delivering large-scale Government / Public Sector projects. Key experience + tasks will include: Java Developer needed to work on developing solutions for a large-scale Government / Public Sector programme. Government / Public Sector / GOV.UK sector experience strongly preferred. Strong hands-on Java development expertise including: Java 17+, Spring Boot, Spring Data JPA, Spring Integration, Spring Batch, Microservices, REST,...

Role: Java Developer Sector: Government/Public Safety Clearance: Active SC + NPPV3 required IR35: Outside 6 month initial contract Location: Hybrid (2 days per week onsite Solihull) Start: ASAP We are seeking Java and Lead Java Developers with current SC + NPPV3 clearance to support complex engineering, platform integration and live service environments click apply for full job details

Experience: Proficiency in Java 8+, Spring Boot, Spring Data JPA, Spring Integration, Spring Batch, Microservices, Quartz, SQL Database (PostgreSQL), JPA (Hibernate), REST and SOAP Web Services, Messaging service (ActiveMQ), Maven, Junit, Jenkins, AWS Cloud hosting and its components, Postgres/Aurora, Bootstrap, Docker, TDD, Agile (Scrum) Public sector experience. 5 years of hands-on experience with large-scale Spring-based Java projects. Experience supporting live systems and diagnosing incidents. Experience in large-scale integration projects involving microservices, messaging, web services, and distributed systems. Experience with web services (SOAP and RESTful). Experience with containerization (Docker). Experience with testing frameworks like JUnit, Mockito, Powermock, JMock, DBUnit, TestContainers. Experience connecting processes across several systems with message brokers like ActiveMQ. Experience with...

Role: Java Developers Sector: Government / Public Safety Clearance: Active SC + NPPV3 required IR35: Outside - 6 month initial contract L ocation: Hybrid (2 days per week onsite - Solihull) Start: ASAP We are seeking Java and Lead Java Developers with current SC + NPPV3 clearance to support complex engineering, platform integration and live service environments. What you'll be doing Developing new features and integrations across secure biometric and identity platforms Supporting live, mission-critical systems and troubleshooting production issues Building high-quality Java microservices and APIs Contributing to Agile delivery teams focused on reliability, performance and secure coding Core Skills & Experience Java Spring Boot, Spring Data JPA, Spring Integration, Spring Batch Microservices architecture REST & SOAP Web Services JPA/Hibernate PostgreSQL / Aurora...

Job title: Java Developer Type: Full-time, Contract (Outside IR35) Location: UK with flexible options for home-based, office-based, or hybrid working. Start date: ASAP (interviews likely next week) What you’ll be working on You’ll be embedded in an established delivery team, helping expand and strengthen an existing project for a client in the financial services / real estate sector. Your focus will be on building and integrating agent-based systems into the client’s wider technical ecosystem, ensuring they can interact reliably with business systems and data platforms. Responsibilities: Designing and building services using Java and Spring Developing integration layers across business-critical platforms Working with Kafka for event-driven architecture and messaging Building and consuming REST APIs Supporting database-backed services with performance and scalability in mind Required experience: Java & Spring Databases...

Job title: Java Developer Type: Full-time, Contract (Outside IR35) Location: UK with flexible options for home-based, office-based, or hybrid working. Start date: ASAP (interviews likely next week) What you’ll be working on You’ll be embedded in an established delivery team, helping expand and strengthen an existing project for a client in the financial services / real estate sector. Your focus will be on building and integrating agent-based systems into the client’s wider technical ecosystem, ensuring they can interact reliably with business systems and data platforms. Responsibilities: Designing and building services using Java and Spring Developing integration layers across business-critical platforms Working with Kafka for event-driven architecture and messaging Building and consuming REST APIs Supporting database-backed services with performance and scalability in mind Required experience: Java & Spring Databases Kafka REST...

Job title: Java Developer Type: Full-time, Contract (Outside IR35) Location: UK with flexible options for home-based, office-based, or hybrid working. Start date: ASAP (interviews likely next week) What You’ll Be Working On You’ll be embedded in an established delivery team, helping expand and strengthen an existing project for a client in the financial services / real estate sector. Your focus will be on building and integrating agent-based systems into the client’s wider technical ecosystem, ensuring they can interact reliably with business systems and data platforms. Responsibilities: Designing and building services using Java and Spring Developing integration layers across business-critical platforms Working with Kafka for event-driven architecture and messaging Building and consuming REST APIs Supporting database-backed services with performance and scalability in mind Required experience: Java & Spring Databases Kafka REST...

Position: Lead Java Developer Job Type - Contract(outside ir35) Location: Working 2 days a week from Solihull with occasional travel to Croydon based on business needs Security Clearance: SC Cleared, NPPV3 . Essential Skills and Experience: Proficiency in Java 17+, Spring Boot, Spring Data JPA, Spring Integration, Spring Batch, Microservices, Quartz, SQL Database (PostgreSQL), JPA (Hibernate), REST and SOAP Web Services, Messaging service (ActiveMQ), Maven, Junit, Jenkins, AWS Cloud hosting and its components, Postgres/Aurora, Bootstrap, Docker, TDD, Agile (Scrum) 8-10 years of hand on experience in Java Experience in large-scale integration projects involving microservices, messaging, web services, and distributed systems. Experience with web services (SOAP and RESTful). Experience with containerization (Docker). Experience with testing frameworks like JUnit, Mockito, Powermock, JMock, DBUnit, TestContainers. Experience connecting processes across several...

Java Developer Birmingham (Hybrid) 6 Month Contract £450-500/day (Outside IR35) Java Developer needed with both active SC Clearance and NPPV3 Security Clearance. 6 Month Contract based in Birmingham (Hybrid). Paying up to £450-500/day (Outside IR35). Start ASAP in Feb/March 2026. Hybrid Working - 3 days/week remote (WFH), and 2 days/week working on-site in the Birmingham office. Occasional travel to the Croydon office, typically once every 1-2 months. A chance to work with a leading global IT transformation business specialising in delivering large-scale Government / Public Sector projects. Key experience + tasks will include: Java Developer needed to work on developing solutions for a large-scale Government / Public Sector programme. Government / Public Sector / GOV.UK sector experience strongly preferred. Strong hands-on Java development expertise including: Java 17+, Spring Boot, Spring Data JPA, Spring Integration, Spring Batch, Microservices, REST,...

WE ARE: At Adaptive, we are a financial consulting firm that partners with capital, commodity, and digital market participants. We value differentiation through technology. Our experienced teams design and deliver complex front-office technology solutions using our proven accelerators to create long-term competitive advantage. Our clients include the world's leading investment banks, investment managers, fintech and capital market service providers. With a global reach with offices in London, New York, Barcelona, Manila and Montreal, we have a proven track record of delivering powerful, elegant and intuitive trading technology solutions. We are now looking for Java Developer services on an exciting project! THE SERVICES REQUIRED: A JVM lover who really enjoys working with the latest technologies and design patterns Eager to solve complex technical challenges, especially in cloud-based environments and event driven architecture patterns Experienced within the...

This job is with Adaptive Financial Consulting Ltd, an inclusive employer and a member of myGwork – the largest global platform for the LGBTQ+ business community. Please do not contact the recruiter directly. We Are At Adaptive, we are a financial consulting firm that partners with capital, commodity, and digital market participants. We value differentiation through technology. Our experienced teams design and deliver complex front-office technology solutions using our proven accelerators to create long-term competitive advantage. Our clients include the world’s leading investment banks, investment managers, fintech and capital market service providers. With a global reach with offices in London, New York, Barcelona, Manila and Montreal, we have a proven track record of delivering powerful, elegant and intuitive trading technology solutions. We are now looking for Java Developer services on an exciting project! The Services Required A JVM lover who really enjoys...

Role: Java Developer Location: Solihull/Remote (2 days per week on-site) Duration: 6 Months Day rate: Negotiable Outside IR35 Clearance: Active SC clearance required & NPPV3 is desirable About the Role: We are seeking a highly skilled Lead Java Developer to join our team and work on a large-scale public sector program. This unique development opportunity involves creating and implementing solutions for our portfolio of biometric products, supporting live systems, and diagnosing incidents. You will be part of a collaborative team that prides itself on engineering the best possible Java code. Key Responsibilities: Develop and implement solutions for biometric products. Support live systems and diagnose incidents. Collaborate with the team to ensure high-quality Java code. Essential Skills and Experience: Proficiency in Java 17+, Spring Boot, Spring Data JPA, Spring Integration, Spring Batch, Microservices, Quartz, SQL Database (PostgreSQL), JPA (Hibernate), REST...

Role: Java Developer Positions: 2 Location: West Midlands (2 Days Onsite) Rate: £400 to £500 Outside IR35 DOE Start Date: ASAP Clearances: SC AND NPPV3 I am seeking two Java Developers (One Senior and One Lead) to join our clients team and work on a large-scale public sector program. Key Responsibilities: Develop and implement solutions for bio-metric products. Support live systems and diagnose incidents. Collaborate with the clients team to ensure high-quality Java code. Essential Skills: Proficiency in Java 17+. SpringBoot. SQL. Docker. AWS. If you're interested, please do respond with your updated CV as we will be calling through applicants in order of receipt m.simmonds @ioassociates.co.uk Role: Java Developer Positions: 2 Location: West Midlands (2 Days Onsite) Rate: £400 to £500 Outside IR35 DOE Start Date: ASAP Clearances: SC AND NPPV3

Role: Java Developer Positions: 2 Location: West Midlands (2 Days Onsite) Rate: £400 to £500 Outside IR35 DOE Start Date: ASAP Clearances: SC AND NPPV3 I am seeking two Java Developers (One Senior and One Lead) to join our clients team and work on a large-scale public sector program click apply for full job details

Java DeveloperBirmingham (Hybrid)6 Month Contract£450-500/day (Outside IR35) Java Developer needed with both active SC Clearance and NPPV3 Security Clearance. 6 Month Contract based in Birmingham (Hybrid). Paying up to £450-500/day (Outside IR35). Start ASAP in Feb/March 2026. Hybrid Working - 3 days/week remote (WFH), and 2 days/week working on-site in the Birmingham office. Occasional travel to the Croydon office, typically once every 1-2 months. A chance to work with a leading global IT transformation business specialising in delivering large-scale Government / Public Sector projects. Key experience + tasks will include: Java Developer needed to work on developing solutions for a large-scale Government / Public Sector programme. Government / Public Sector / (url removed) sector experience strongly preferred. Strong hands-on Java development expertise including: Java 17+, Spring Boot, Spring Data JPA, Spring Integration, Spring Batch, Microservices, REST, SOAP Web...

Java Developer Birmingham (Hybrid) 6 Month Contract £450-500/day (Outside IR35) Java Developer needed with both active SC Clearance and NPPV3 Security Clearance. 6 Month Contract based in Birmingham (Hybrid). Paying up to £450-500/day (Outside IR35). Start ASAP in Feb/March 2026. Hybrid Working - 3 days/week remote (WFH), and 2 days/week working on-site in the Birmingham office. Occasional travel to the Croydon office, typically once every 1-2 months. A chance to work with a leading global IT transformation business specialising in delivering large-scale Government/Public Sector projects. Key experience + tasks will include: Java Developer needed to work on developing solutions for a large-scale Government/Public Sector programme. Government/Public Sector/GOV.UK sector experience strongly preferred. Strong hands-on Java development expertise including: Java 17+, Spring Boot, Spring Data JPA, Spring Integration, Spring Batch, Microservices, REST, SOAP Web Services,...

Role: Java Developer Sector: Government / Public Safety Clearance:  Active SC + NPPV3 required IR35: Outside – 6 month initial contract Location: Hybrid (2 days per week onsite – Solihull) Start: ASAP We are seeking Java and Lead Java Developers with current SC + NPPV3 clearance to support complex engineering, platform integration and live service environments. What you’ll be doing Developing new features and integrations across secure biometric and identity platforms Supporting live, mission-critical systems and troubleshooting production issues Building high-quality Java microservices and APIs Contributing to Agile delivery teams focused on reliability, performance and secure coding Core Skills & Experience Java Spring Boot, Spring Data JPA, Spring Integration, Spring Batch Microservices architecture REST & SOAP Web Services JPA/Hibernate PostgreSQL / Aurora ActiveMQ or similar messaging technologies CI/CD: Maven, Git, Jenkins,...

Java Developer Contract – 6 Months Outside IR35 Hybrid - 1 day per month in London office We’re looking for an experienced Java Developers to join a fast-paced engineering team on an initial 6-month contract (Outside IR35). You’ll be contributing to the development and enhancement of scalable backend systems in a collaborative, delivery-focused environment. Responsibilities Design, develop, and maintain high-quality Java applications Build and improve backend services and APIs Write clean, testable, and efficient code Collaborate with engineers, QA, and stakeholders to deliver features Participate in code reviews and technical discussions Requirements Strong commercial experience with Java Solid understanding of object-oriented design principles Experience building backend systems and APIs Familiar with unit testing and best coding practices Comfortable working in an agile development environment Ideal for a contractor who...

SailPoint Specialist We're looking for an experienced SailPoint Developer with a SailPoint ISE certification to support a development and testing-focused role on a major IAM programme. This role is hands-on, working on configuration, customisation, integrations, and supporting testing cycles, not a solution architecture position. Key requirements: * SailPoint IdentityIQ development experience * SailPoint NERM * SailPoint ISC * ISE certification (essential) * Strong Java / BeanShell scripting * Experience with testing, defect fixing, and deployment support * Comfortable working remotely in a delivery-focused team Details: * Initial 6-month contract * Outside IR35 * Fully remote * Immediate / short notice preferred If you're a delivery-led SailPoint specialist looking for a remote contract, I'd like to hear from you.