42 senior java developer jobs found

We have an exciting opportunity for experienced Java developers to join our team! You will have a passion for software development and an excellent understanding of how to define and deliver solutions iteratively and collaboratively. You will be involved in all areas of delivery, with the technical gravitas to mentor and inspire the development team; playing an integral part in helping them continuously improve by sharing your own knowledge, experience and insights. You will be confident in challenging business requirements to ensure you are continuously delivering the best possible outcome, harnessing innovation and driving the adoption of new technologies to deliver business value. Your vision and ambition will contribute to shaping our online technology roadmap, influencing our future technical direction and balancing passion with precision to deliver exceptional online service and solutions for our customers.   This is an initial six month contract that sits...

We have an exciting opportunity for experienced Java developers to join our team! You will have a passion for software development and an excellent understanding of how to define and deliver solutions iteratively and collaboratively. You will be involved in all areas of delivery, with the technical gravitas to mentor and inspire the development team; playing an integral part in helping them continuously improve by sharing your own knowledge, experience and insights. You will be confident in challenging business requirements to ensure you are continuously delivering the best possible outcome, harnessing innovation and driving the adoption of new technologies to deliver business value. Your vision and ambition will contribute to shaping our online technology roadmap, influencing our future technical direction and balancing passion with precision to deliver exceptional online service and solutions for our customers.   This is an initial six month contract that sits...

We have an exciting opportunity for experienced Java developers to join our team! You will have a passion for software development and an excellent understanding of how to define and deliver solutions iteratively and collaboratively. You will be involved in all areas of delivery, with the technical gravitas to mentor and inspire the development team; playing an integral part in helping them continuously improve by sharing your own knowledge, experience and insights. You will be confident in challenging business requirements to ensure you are continuously delivering the best possible outcome, harnessing innovation and driving the adoption of new technologies to deliver business value. Your vision and ambition will contribute to shaping our online technology roadmap, influencing our future technical direction and balancing passion with precision to deliver exceptional online service and solutions for our customers.   This is an initial six month contract that sits...

About Synechron: Synechron is a leading digital transformation consulting firm dedicated to delivering innovative technology solutions within banking, financial services, and insurance. We thrive on engineering excellence, collaboration, and a passion for cutting-edge technologies. Job Location: London (Hybrid - 3 days in the office) About the role: We are seeking a highly experienced Senior Java Developer with over 10 years of hands-on Java development experience and extensive exposure to AI/ML-driven systems . The ideal candidate will design, build, and scale enterprise-grade applications while integrating modern AI capabilities such as machine learning models, generative AI, and intelligent automation into Back End systems. Key Responsibilities Design, develop, and maintain high-performance, scalable Java applications using modern frameworks. Architect and implement AI-enabled solutions , integrating ML/AI models into Java-based platforms....

We are looking for Senior Java Developers to join on a contract basis (Inside IR35) . The ideal candidate will have experience building scalable microservices, working with event-driven systems, and deploying applications using containerized and cloud technologies. You will contribute to developing reliable backend services and help modernize legacy systems into cloud-ready architectures. Key Skills & Responsibilities Strong experience with Java (latest versions) and Spring Boot Experience designing and developing Microservices architectures Solid understanding of backend design patterns and best practices Experience working with SQL databases, particularly PostgreSQL Knowledge of Object-Oriented programming principles (OCP) Experience with event streaming platforms such as Kafka or RabbitMQ Hands-on experience with Docker and Kubernetes Experience working with AWS or other cloud platforms Ability to build scalable, reliable, and...

We are looking for Senior Java Developers to join on a contract basis (Inside IR35) . The ideal candidate will have experience building scalable microservices, working with event-driven systems, and deploying applications using containerized and cloud technologies. You will contribute to developing reliable backend services and help modernize legacy systems into cloud-ready architectures. Key Skills & Responsibilities Strong experience with Java (latest versions) and Spring Boot Experience designing and developing Microservices architectures Solid understanding of backend design patterns and best practices Experience working with SQL databases, particularly PostgreSQL Knowledge of Object-Oriented programming principles (OCP) Experience with event streaming platforms such as Kafka or RabbitMQ Hands-on experience with Docker and Kubernetes Experience working with AWS or other cloud platforms Ability to build scalable, reliable, and...

We are looking for Senior Java Developers to join on a contract basis (Inside IR35) . The ideal candidate will have experience building scalable microservices, working with event-driven systems, and deploying applications using containerized and cloud technologies. You will contribute to developing reliable backend services and help modernize legacy systems into cloud-ready architectures. Key Skills & Responsibilities Strong experience with Java (latest versions) and Spring Boot Experience designing and developing Microservices architectures Solid understanding of backend design patterns and best practices Experience working with SQL databases, particularly PostgreSQL Knowledge of Object-Oriented programming principles (OCP) Experience with event streaming platforms such as Kafka or RabbitMQ Hands-on experience with Docker and Kubernetes Experience working with AWS or other cloud platforms Ability to build scalable, reliable, and...

Partnering with a top AI research organization to evaluate and improve how coding assistants reason, act, and communicate during development workflows. We’re seeking technically sharp experts (especially those with experience in code review, testing, or documentation) to assess full transcripts of user–AI coding conversations. This short-term engagement helps shape the future of developer-assisting AI systems. Key Responsibilities Review long-form transcripts between users and AI coding assistants Analyze the AI’s logic, execution, and stated actions in detail Score each transcript using a 10-point rubric across multiple criteria Optionally write brief justifications citing examples from the dialogue Detect mismatches between claims and actions (e.g., saying “I’ll run tests” but not doing so) Ideal Qualifications Top choices: Senior or Staff Engineers with deep code review experience and execution insight QA Engineers...

Methods Business and Digital Technology Limited Methods is a £100M+ IT Services Consultancy who has partnered with a range of central government departments and agencies to transform the way the public sector operates in the UK. Established over 30 years ago and UK-based, we apply our skills in transformation, delivery, and collaboration from across the Methods Group, to create end-to-end business and technical solutions that are people-centred, safe, and designed for the future. Our human touch sets us apart from other consultancies, system integrators and software houses - with people, technology, and data at the heart of who we are, we believe in creating value and sustainability through everything we do for our clients, staff, communities, and the planet. We support our clients in the success of their projects while working collaboratively to share skill sets and solve problems. At Methods we have fun while working hard; we are not afraid of making mistakes and...

Methods Business and Digital Technology Limited Methods is a £100M+ IT Services Consultancy who has partnered with a range of central government departments and agencies to transform the way the public sector operates in the UK. Established over 30 years ago and UK-based, we apply our skills in transformation, delivery, and collaboration from across the Methods Group, to create end-to-end business and technical solutions that are people-centred, safe, and designed for the future. Our human touch sets us apart from other consultancies, system integrators and software houses - with people, technology, and data at the heart of who we are, we believe in creating value and sustainability through everything we do for our clients, staff, communities, and the planet. We support our clients in the success of their projects while working collaboratively to share skill sets and solve problems. At Methods we have fun while working hard; we are not afraid of making mistakes and...

Methods Business and Digital Technology Limited Methods is a £100M+ IT Services Consultancy who has partnered with a range of central government departments and agencies to transform the way the public sector operates in the UK. Established over 30 years ago and UK-based, we apply our skills in transformation, delivery, and collaboration from across the Methods Group, to create end-to-end business and technical solutions that are people-centred, safe, and designed for the future. Our human touch sets us apart from other consultancies, system integrators and software houses - with people, technology, and data at the heart of who we are, we believe in creating value and sustainability through everything we do for our clients, staff, communities, and the planet. We support our clients in the success of their projects while working collaboratively to share skill sets and solve problems. At Methods we have fun while working hard; we are not afraid of making mistakes and...

    About Scrumconnect Consulting Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens. With a strong commitment to user-centred design and agile delivery, we continue to deliver innovative digital services that matter. Role Overview We are looking for a Senior Android Developer to design, build, and maintain high-quality native Android applications for a UK government client. You will work as part of a multidisciplinary agile team, delivering user-centred mobile experiences that meet Government Digital Service (GDS) standards and accessibility requirements. This is a hands-on technical role operating within structured and governed environments where security, performance, accessibility, and reliability are critical to service success. Key Responsibilities...

Full job description   Well Played Games is a small studio based in Leamington Spa, UK with a strong track record of collaborating with world-class IP. Founded in 2017, our aim is to build live free-to-play video games across multiple platforms. We are looking for a Senior Backend Developer to join our team and take ownership of development across our live mobile titles. The Role As part of the project’s code team, you will be responsible for the support of the live game, the design and development of new features. You will take full ownership of the backend of a live product and work closely with the whole team to deliver new, major features safely. You will be responsible for the design and development of services to support new game features. You will also be involved in and manage the rest of the team’s backend work by providing technical oversight, support and code reviews. As a senior developer, you will be encouraged to...

Job Overview We are seeking a highly skilled API / Integration Architect to lead the design, development, and implementation of complex integration solutions across diverse platforms and systems. The successful candidate will play a pivotal role in shaping our cloud architecture and ensuring seamless connectivity between various enterprise applications. This role offers an exciting opportunity to work on cutting-edge technologies, including microservices, cloud computing, and DevOps practices, within a dynamic and innovative environment. What you’ll be doing: Assessing existing systems and defining API-led integration strategy Data formats, interoperability, authentication and security Designing target integration architecture Supporting data and technical feasibility assessments Identifying opportunities for Automation Contributing to discovery outputs and recommendations Lead the architecture and design of scalable, secure, and...

Job Title: Senior Full Stack Developer (contract) Location: London Hybrid. Travel to the London office 3 days a week Duration: 11 months Contract Start Date: ASAP *note client onboarding takes 6 weeks from offer Day Rate: Competitive (Inside IR35)   Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   The Role We are looking for Senior Full Stack Developers to work in the Technology and Transformation Team at Deloitte. You will work with one of our global financial services clients. This position requires a solid understanding of...

Partnering with a top AI research organization to evaluate and improve how coding assistants reason, act, and communicate during development workflows. We’re seeking technically sharp experts (especially those with experience in code review, testing, or documentation) to assess full transcripts of user–AI coding conversations. This short-term engagement helps shape the future of developer-assisting AI systems. Key Responsibilities Review long-form transcripts between users and AI coding assistants Analyze the AI’s logic, execution, and stated actions in detail Score each transcript using a 10-point rubric across multiple criteria Optionally write brief justifications citing examples from the dialogue Detect mismatches between claims and actions (e.g., saying “I’ll run tests” but not doing so) Ideal Qualifications Top choices: Senior or Staff Engineers with deep code review experience and execution insight QA Engineers...

  Well Played Games is a small studio based in Leamington Spa, UK with a strong track record of collaborating with world-class IP. Founded in 2017, our aim is to build live free-to-play video games across multiple platforms. We are looking for a Senior Backend Developer to join our team and take ownership of development across our live mobile titles. The Role As part of the project’s code team, you will be responsible for the support of the live game, the design and development of new features. You will take full ownership of the backend of a live product and work closely with the whole team to deliver new, major features safely. You will be responsible for the design and development of services to support new game features. You will also be involved in and manage the rest of the team’s backend work by providing technical oversight, support and code reviews. As a senior developer, you will be encouraged to contribute to the analysis and pragmatic...

400-425 inside ir 35 City Staines Province Surrey Country United Kingdom Postal Code TW18 Job Description About Scrumconnect Consulting Scrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful technology solutions across UK government departments. Our work has positively influenced the lives of over 40 million UK citizens. With a strong commitment to user-centred design and agile delivery, we continue to deliver innovative digital services that matter. Role Overview We are looking for a Senior Android Developer to design, build, and maintain high-quality native Android applications for a UK government client. You will work as part of a multidisciplinary agile team, delivering user-centred mobile experiences that meet Government Digital Service (GDS) standards and accessibility requirements. This is a hands-on technical role operating within...

  Job Title: Senior Full Stack Developer (contract) Location: London Hybrid. Travel to the London office 3 days a week Duration: 11 months Contract Start Date: ASAP *note client onboarding takes 6 weeks from offer Day Rate: Competitive (Inside IR35)   Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   The Role We are looking for Senior Full Stack Developers to work in the Technology and Transformation Team at Deloitte. You will work with one of our global financial services clients. This position...

Partnering with a top AI research organization to evaluate and improve how coding assistants reason, act, and communicate during development workflows. We’re seeking technically sharp experts (especially those with experience in code review, testing, or documentation) to assess full transcripts of user–AI coding conversations. This short-term engagement helps shape the future of developer-assisting AI systems. Key Responsibilities Review long-form transcripts between users and AI coding assistants Analyze the AI’s logic, execution, and stated actions in detail Score each transcript using a 10-point rubric across multiple criteria Optionally write brief justifications citing examples from the dialogue Detect mismatches between claims and actions (e.g., saying “I’ll run tests” but not doing so) Ideal Qualifications Top choices: Senior or Staff Engineers with deep code review experience and execution insight QA Engineers...