1 to 25 of 137 Contract Java Jobs

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/CD environments Unix/… 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 ❯

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: - Hands-on professional … 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 JBoss integration. … 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 ❯

infrastructure-as-code: Terraform Experience with GKE, Helm, and Harness Experience with Linux System Administration Understanding of high-availability, disaster-recovery, monitoring and logging at scale Deep hands-on Java (plus Spring framework). Nice to have: Python and Node.js Skills and Experience Consulting experience, preferably with major IT consulting Docker (DCA) or Kubernetes (CKAD) certification a plus Highly articulate More ❯

Java Developer Location: London (Office-Based, 3 Days per Week) Duration: 6 Months Day Rate: £510 Inside IR35 Start Date: ASAP The Role We are seeking an experienced Java Developer to join a leading organisation in London. You will design, develop, and maintain full stack web applications, working across both front-end and back-end technologies to deliver secure, high … performing, and scalable solutions. Core Responsibilities * Develop and maintain applications using Java, Spring Boot, and Hibernate. * Design and implement RESTful APIs and microservices. * Build responsive interfaces using HTML, CSS, JavaScript, and frameworks such as React, Angular, or Vue.js. * Manage relational and NoSQL databases. * Support CI/CD pipelines, containerisation (Docker, Kubernetes), and cloud deployments on AWS, Azure, or GCP. * Collaborate … within Agile teams, using Git for version control and following best practices in security, testing, and code quality. Your Profile Essential Skills & Experience * Strong proficiency in Java and object-oriented programming. * Expertise with Spring Framework, REST APIs, and ORM tools. * Solid understanding of web technologies, security, and performance optimisation. * Experience with testing frameworks such as JUnit or Mockito. * Proven ability More ❯

either AWS, Azure OR GCP Cloud Good knowledge in GCP Storage Buckets, BigQuery, Dataflow and Cloud Functions (any Cloud). Hands-on experience with one or more programming languages (Java/JavaScript). Experience with non-functional testing using JMeter or similar tools. Proven experience creating best practices and policies to improve quality at program level. Strong technical skills and More ❯

performance and developer experience Requirements : 7+ years of software engineering experience, with 2+ years in a leadership role Deep expertise in modern backend and frontend technologies (e.g., Node.js, Python, Java, React, TypeScript) Strong understanding of system architecture, cloud infrastructure (AWS/GCP/Azure), and CI/CD pipelines Proven ability to lead teams, manage projects, and communicate effectively across More ❯

Azure experience is also very relevant. Proven track record building CI/CD pipelines and infrastructure-as-code. Experience developing and supporting production-grade applications in languages such as Java, Python or C#. Technical leadership in a specialist domain (e.g., containers, data platforms, cloud networking). Experience working in regulated environments with a focus on security and compliance. Desirable Experience More ❯

Linux, network security, SQL, and AWS (EC2, S3, RDS, Lambda) Comfortable with MQ messaging (RabbitMQ or similar) Bonus points for: Experience with Azure environments Strong coding ability in Python, Java, or Go Knowledge of cross-domain systems or service management frameworks Proven application of observability and uptime metrics to reduce downtime The Offer: Contract position outside IR35 £500–£600 per More ❯

MongoDB, IBM CDC. Knowledge of public/enterprise cloud technologies (AWS EC2, S3 Bucket, GCP, Azure) is advantageous but not required. Some skills/experience with automated testing frameworks (Java, Python, PySpark, Bitbucket, Gitlab, Jenkins) is advantageous but not required. Strong Environment Management skill Carbon60, Lorien & SRG - The Impellam Group STEM Portfolio are acting as an Employment Business in relation More ❯

and senior business stakeholders to deliver measurable outcomes. Setting technical direction and best practices across microservices, DevOps, and CI/CD. What you'll bring Strong software engineering foundations (Java, .NET, or similar). Proven experience delivering large-scale application modernisation programmes. Deep understanding of cloud, containers, and event-driven architecture. Financial services experience is essential - ideally within banking or More ❯

ensure smooth handover of deliverables. Profile Proven experience as a Quantitative Developer within a hedge fund, prop trading, or systematic trading environment. Strong programming expertise in Python (C++ or Java also advantageous). Excellent understanding of data structures, algorithms, and numerical computing. Experience with time-series data, backtesting, and quantitative research workflows. Familiarity with financial markets and trading systems. Strong More ❯

on AWS, with potential migration to Azure Monitoring: Kibana, Grafana, Splunk, PagerDuty (transitioning to Dynatrace) CI/CD: GitLab pipelines Databases: Oracle RDS, SQL, MongoDB (limited use) Languages & Frameworks: Java 21, Spring Boot/Spring Batch Testing & Automation: Playwright, WireMock, OWASP ZAP (SAST, DAST, SCA), Gatling Key Responsibilities Define and implement QA principles within the workstream, aligned with programme strategy More ❯

software releases. Participate in daily standup meetings, sprint planning and retrospective. Contribute to POC to support new opportunities. What are we looking for? 3+ years software development experience, including: JAVA 5/J2EE, ReactJS, Web Services, XML, SQL, Gradle, Spring, Hibernate, Castor, REST/JSON and Enterprise Messaging System. Using configuration management tools like Git, Tortoise SVN, Source Tree, Perforce More ❯

solving, debugging, and testing skills. Ability to work collaboratively in a dynamic, cross-functional environment. Experience with project management or Agile methodologies. Desirable: Programming skills in Python, JavaScript, SQL, Java, C#, or Ruby. Experience with Microsoft Cloud, AWS, cloud infrastructure, or Microservices architecture. Familiarity with Power Apps, Power BI, Microsoft Graph API, Azure Logic Apps/Functions, and Dataverse. Experience More ❯

of SQL and relational databases Linux administration and shell scripting Familiarity with network security protocols Experience with cloud platforms, ideally AWS (EC2, RDS, S3, Lambda) Desirable: Coding experience in Java, Go, Python or similar Knowledge of cross-domain technologies Experience in service management environments Practical application of observability patterns Experience with Azure Additional Information: Due to the nature of the More ❯

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 integration flows with Spring Integration. Develop … 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 with GridGain More ❯

code reviews, and knowledge sharing across the team. Senior Backend Engineer - Key Skills & Experience: Strong background in backend software engineering, with significant commercial experience Advanced proficiency in Python or Java, with hands-on expertise in AWS, Kubernetes, and Docker Experience designing and architecting systems end-to-end Proven track record of working with complex, large-scale data applications Product-driven More ❯

About Us: At Dabster , we specialize in connecting top engineering and technology talent with leading global companies. We are currently seeking an experienced Java Fullstack Engineer to join our client's team in Leeds, UK . Our mission is to be the foremost recruitment partner for organizations driving innovation across industries such as engineering, digital, and cloud technologies. Who Will … as part of a high-performing Agile development team focused on building a credit decisioning engine powered by scalable microservices and cloud-native solutions. About the Role: As a Java Fullstack Engineer , you will play a pivotal role in designing, developing, and deploying high-performance backend microservices while contributing to front-end feature enhancements. You will be responsible for implementing … Java 17-based applications , setting up DevOps pipelines on GCP , and collaborating closely with architects and product owners to deliver reliable, production-grade systems. This is a 6-month contract role based in Leeds, UK , with a strong possibility of extension . Key Responsibilities: Design, develop, and deploy scalable backend microservices using Java 17 and Spring Boot . Configure and More ❯

Job Title: Senior Engineer with Node.js and Python or Back End (Java and ideally Kafka) Max rate: £537/Day on Umbrella Location: Croydon (Hybrid) Clearance required: SC Transfer (Active SC only ) Contract Duration: 05 months Experience of Java Experience of Spring framework or equivalent. Knowledge of software design patterns and when to apply them Excellent knowledge of development processes. More ❯

Apigee Java Developer 2 Month contract initially Location: Hybrid - Max 2-3 days p/w onsite in Knutsford Rate: £325 - £360 p/d (via Umbrella company) We have a great opportunity with a world leading organisation where you will be provided with all of the support and development to succeed. A progressive organisation where you can really make … a difference. We have a great opportunity for an Apigee Java Developer to join the team. We are seeking a skilled Apigee Java Developer to design, develop, and maintain enterprise-grade APIs using Apigee Edge or Apigee X. The ideal candidate will have strong hands-on experience in Java, RESTful services, and API gateway solutions. Key Responsibilities: Design and implement … RESTful APIs using Java (Spring Boot, JAX-RS, Hibernate). Develop API proxies, policies, and shared flows in Apigee. Integrate Back End microservices with Apigee API Gateway. Ensure API security using OAuth2, JWT, API Keys, etc. Monitor and optimize API performance and scalability. Collaborate with cross-functional teams for API life cycle management. Troubleshoot and resolve API-related issues. Document More ❯

Role: Technical Lead (Java) Location: Telford (2 days per week on-site) Duration: 6 months Rate: Inside IR35 About the Role We're seeking an experienced Technical Lead (Java) to join a large-scale central government programme , supporting the delivery of high-quality, secure, and scalable digital services. You'll lead technical direction across development teams, ensuring best practice in … software engineering, architecture, and delivery. This role requires hands-on Java expertise alongside the ability to mentor engineers and influence technical decisions across multiple workstreams. Key Responsibilities Provide technical leadership and guidance to software engineering teams Define and implement best practices in software design, coding, testing, and deployment Lead the development of secure and scalable Java-based applications Collaborate closely … with Product Managers, Architects, and Delivery Leads to ensure technical alignment Contribute to continuous improvement and innovation within a complex, multi-team environment Essential Skills & Experience Strong Java expertise (Java 8+), with experience designing and building enterprise-scale applications Proven experience as a Tech Lead or Senior Engineer in central government or large public sector programmes Solid understanding of microservices More ❯

Java Developer - Financial Technology - London/Hybrid (INSIDE IR35) (Key skills: Java, Spring Boot, Kubernetes, AWS EKS, Amazon Redshift, PostgreSQL, RESTful APIs, CI/CD, Microservices, iOS/Android Native, Agile, Financial Services) Are you a highly skilled Java Developer with a passion for building scalable, high-performance financial systems? Do you enjoy working with cutting-edge technologies across backend … is a fantastic opportunity to join a growing FinTech organisation at the heart of digital transformation in financial services. Our client, an international financial technology company , is seeking a Java Developer to play a key role in designing, developing, and deploying next-generation financial applications. You will work on complex, high-availability systems built using Spring Boot , deployed on AWS … with iOS and Android engineers to ensure seamless end-to-end integration, supporting mobile-first financial products that reach thousands of users daily. To succeed, you'll need strong Java and Spring Boot experience, solid understanding of Kubernetes and AWS services, and hands-on database development with SQL-based systems. Familiarity with mobile integrations (iOS/Android native), RESTful API More ❯

problem-solving skills. Active SC Clearance. Nice to have: Experience with other OpenText Products like Content Server, Documentum etc. Cloud experience (AWS, Azure, GCP) for AppWorks deployments. Knowledge of Java/.Net programming. Immediate availability. Hays Specialist Recruitment Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this More ❯

problem-solving skills. Active SC Clearance. Nice to have: Experience with other OpenText Products like Content Server, Documentum etc. Cloud experience (AWS, Azure, GCP) for AppWorks deployments. Knowledge of Java/.Net programming. Immediate availability. Hays Specialist Recruitment Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this More ❯

on API testing. Role - QA Lead Duration - 6 months with very likely extension Rate - Negotiable Location - Hybrid/Hampshire - 3 days per week in the office Skills - Experience with Java, Junit, Cucumber, Gherkin, Gatling, Xray, Selenium Webdriver, TestNG, Pact Testing, API Testing Frameworks. AWS expertise preferred. Hoppscotch or Postman experience testing APIs Experience identifying test cases using boundary valuation analysis More ❯