1 to 25 of 27 Senior Java Engineer Jobs in the Thames Valley

Senior Full Stack Java Engineer - Java, TypeScript, AWS, MySQL, NoSql, Microservices, Machine Learning, Artificial intelligence (Hybrid - 3 days a week in the office near Notting Hill) Senior Full Stack Java Engineer :- You will be joining a fast-growing, research-driven company building an … machine learning techniques. My client is revolutionising their industry with a track record of building things that others have ruled out as impossible. The senior Java Full Stack engineer will join a very bright, talented team of engineers with the guidance of technologists who have help build … companies today. You will have a great opportunity to work with a variety of languages, frameworks and tools. Applicants will need a background in Java and modern JS frameworks and likely to have good AWS and Microservices experience. Core skills for the Senior Full Stack Engineer : 5yrs+ More ❯

network you want to login/join with: Looking to play your part in a revolutionary movement with sustainable energy? Are you a Core Java expert with extensive experience using concurrency, low latency and multithreaded applications? FULLY REMOTE Senior Java Engineer - Tech for Good Salary: up … to £120k Location: Fully Remote from anywhere in the UK We have a fantastic new opportunity for all you Java Engineers looking to get stuck into a new challenge working on exciting projects solving real-world problems. They are also very big supporters of Diversity & Inclusion so welcome all … candidates. A unique energy software platform helping consumers transition towards a sustainable future are looking for enthusiastic and knowledgeable Senior Java Engineers with a strong comprehension of the Core Java principles, including Multithreading, Concurrency and Low Latency to join their growing team. In this fantastic Senior More ❯

network you want to login/join with: Looking to play your part in a revolutionary movement with sustainable energy? Are you a Core Java expert with extensive experience using concurrency, low latency and multithreaded applications? FULLY REMOTE Senior Java Engineer - Tech for Good Salary: up … to £120k Location: Fully Remote from anywhere in the UK We have a fantastic new opportunity for all you Java Engineers looking to get stuck into a new challenge working on exciting projects solving real-world problems. They are also very big supporters of Diversity & Inclusion so welcome all … candidates. A unique energy software platform helping consumers transition towards a sustainable future are looking for enthusiastic and knowledgeable Senior Java Engineers with a strong comprehension of the Core Java principles, including Multithreading, Concurrency and Low Latency to join their growing team. In this fantastic Senior More ❯

network you want to login/join with: Looking to play your part in a revolutionary movement with sustainable energy? Are you a Core Java expert with extensive experience using concurrency, low latency and multithreaded applications? FULLY REMOTE Senior Java Engineer - Tech for Good Salary: up … to £120k Location: Fully Remote from anywhere in the UK We have a fantastic new opportunity for all you Java Engineers looking to get stuck into a new challenge working on exciting projects solving real-world problems. They are also very big supporters of Diversity & Inclusion so welcome all … candidates. A unique energy software platform helping consumers transition towards a sustainable future are looking for enthusiastic and knowledgeable Senior Java Engineers with a strong comprehension of the Core Java principles, including Multithreading, Concurrency and Low Latency to join their growing team. In this fantastic Senior More ❯

network you want to login/join with: Looking to play your part in a revolutionary movement with sustainable energy? Are you a Core Java expert with extensive experience using concurrency, low latency and multithreaded applications? FULLY REMOTE Senior Java Engineer - Tech for Good Salary: up … to £120k Location: Fully Remote from anywhere in the UK We have a fantastic new opportunity for all you Java Engineers looking to get stuck into a new challenge working on exciting projects solving real-world problems. They are also very big supporters of Diversity & Inclusion so welcome all … candidates. A unique energy software platform helping consumers transition towards a sustainable future are looking for enthusiastic and knowledgeable Senior Java Engineers with a strong comprehension of the Core Java principles, including Multithreading, Concurrency and Low Latency to join their growing team. In this fantastic Senior More ❯

Senior Backend Engineer Contractor (Java/Ruby focused) | Fully Remote/EU-Based | Rate £550-650pd, Outside IR35 | 12-months Contract Length Opportunity: We're supporting a fast-moving client at huge global scale, that is in need of a Senior Backend Contractor with deep … experience across Java and Ruby . This is a high-impact freelance role within a tech-driven established team - building scalable systems in a modern backend environment. What You'll Be Doing as a Senior Backend Engineer Contractor (Java/Ruby focused) | Fully Remote/EU … Based | Rate £550-650pd | Outside IR35 : Designing and building robust backend services across Java, Python, and Rust-based systems Collaborating with product and platform teams to scale critical infrastructure Contributing to performance optimisation, secure coding, and clean architecture decisions Bringing in best practices across multiple programming paradigms and More ❯

Senior Java Engineer – Kafka & Spring Boot About the Client We’re working with an innovative team building the next generation of secure, real-time communication and data platforms. Their flagship product is a fresh reimagining of an existing system, crafted to provide robust, distributed coordination for a … but in-person attendance is only occasionally required for team meetups or workshops – always with advance notice. The Role We’re looking for a Senior Java Engineer who thrives in the world of Kafka and Spring Boot. You’ll play a key role in crafting a secure … reliable backend services that keep people and teams connected when it matters most. Your Day-to-Day 🛠️ Architect and build event-driven microservices using Java, Spring Boot, and Kafka Be responsible for the backend engineering for secure, distributed real-time systems Design and deliver rock-solid APIs in collaboration More ❯

Social network you want to login/join with: ? Senior Java Engineer – Kafka & Spring Boot, slough col-narrow-left Client: Pixelated People Location: slough, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 2 Posted: 10.06.2025 Expiry Date: 25.07.2025 col-wide … but in-person attendance is only occasionally required for team meetups or workshops – always with advance notice. The Role We’re looking for a Senior Java Engineer who thrives in the world of Kafka and Spring Boot. You’ll play a key role in crafting a secure … frontend specialists to create reliable backend services that keep people and teams connected when it matters most. Architect and build event-driven microservices using Java, Spring Boot, and Kafka Be responsible for the backend engineering for secure, distributed real-time systems Design and deliver rock-solid APIs in collaboration More ❯

Senior Java Engineer Department: Engineering Employment Type: Full Time Location: Oxford Description About Diffblue Diffblue is changing the way software is developed. We build products that have the potential to improve the experience of every software developer in the world. By using Artificial Intelligence to write unit … marketing teams. We're backed by the University, our customers and leading venture capital funds. Our product Diffblue Cover automatically writes unit tests for Java applications using AI, mimicking human-written tests but working 250 times faster than a human - and it never gets bored or makes a mistake. … a modern business, and that when different opinions, backgrounds and life views meet, better results are obtained. Job purpose We are looking for skilled Java developers to work as part of a team with experts in AI, static and dynamic program analysis, and software verification. This is a great More ❯

Senior Java Engineer - Take Ownership of Flagship Trading Product - Up to £120k, Slough Client: Saragossa Location: Slough, United Kingdom Job Category: Other EU work permit required: Yes Job Views: 1 Posted: 31.05.2025 Expiry Date: 15.07.2025 Job Description: Are you a seasoned engineer looking to lead the … pivotal growth stage. This product is already utilized by tier-1 players in the institutional trading sector to address complex execution challenges. As a Senior Engineer, you will be responsible for developing new features, collaborating with engineers and product leads to create sophisticated, event-driven architecture. A strong … knowledge of Java, real-time, distributed systems, and experience with trading technology, including FIX and scripting for performance, is essential. This is a remote-first role with occasional travel to a London-based hub. You will have significant autonomy and direct support from business leaders, contributing to the product More ❯

Social network you want to login/join with: Senior Java Software Engineer, oxford district col-narrow-left Client: Location: oxford district, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 4 Posted: 31.05.2025 Expiry Date: 15.07.2025 col-wide Job Description … Senior Software Engineer – Java - FinTech Remote First | London (UK) | Up to £120k + Benefits Are you a Java developer who thrives in a collaborative, test-driven environment? Do you believe in pair programming, continuous integration, and clean, maintainable code? If so, we’d love to hear … from you. Our FinTech client could be the ideal role for you. Skills: Commercial Java experience - ideally in a fintech, performance environment Strength with Core Java Strong understanding of TDD Clear communication and teamwork Extreme Programming (XP) principles, with a strong focus on TDD, BDD, and DDD. Pair More ❯

Social network you want to login/join with: Senior Java Software Engineer, high wycombe col-narrow-left Client: Location: high wycombe, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 8 Posted: 31.05.2025 Expiry Date: 15.07.2025 col-wide Job Description … Senior Software Engineer – Java - FinTech Remote First | London (UK) | Up to £120k + Benefits Are you a Java developer who thrives in a collaborative, test-driven environment? Do you believe in pair programming, continuous integration, and clean, maintainable code? If so, we’d love to hear … from you. Our FinTech client could be the ideal role for you.... Skills: Commercial Java experience - ideally in a fintech, performance environment Strength with Core Java Strong understanding of TDD Clear communication and teamwork Extreme Programming (XP) principles, with a strong focus on TDD, BDD, and DDD. Pair More ❯

Social network you want to login/join with: Senior Software Engineer (Java) – Bonus, Equity and More, slough col-narrow-left Client: TechHeads Location: slough, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 3 Posted: 10.06.2025 Expiry Date: 25.07.2025 col … wide Job Description: Senior Software Engineer (Java) – Bonus, Equity and More TechHeads is partnering with a global leader in the cyber security space , currently growing their team, to bring you an exciting opportunity for an experienced Senior Software Engineer. This permanent, full-time role is based … and existing backend features , while providing technical leadership through activities such as code reviews and maintaining best practices. Working with a modern stack including Java and Spring Boot , you’ll have the opportunity to develop your expertise with the latest tools and technologies . This is a great chance More ❯

Senior Software Engineer – Java - FinTech Remote First | London (UK) | Up to £120k + Benefits Are you a Java developer who thrives in a collaborative, test-driven environment? Do you believe in pair programming, continuous integration, and clean, maintainable code? If so, we’d love to hear … from you. Our FinTech client could be the ideal role for you. Skills: Commercial Java experience - ideally in a fintech, performance environment Strength with Core Java Strong understanding of TDD Clear communication and teamwork Extreme Programming (XP) principles, with a strong focus on TDD, BDD, and DDD Pair … is key We value growth and flexibility, welcoming developers from all backgrounds What You’ll Be Doing Building resilient and adaptable fintech platforms in Java Refactoring to improve code design Writing comprehensive tests for every commit Automating processes to improve efficiency Rotating across teams to enhance collaboration #J More ❯

Social network you want to login/join with: Senior Software Engineer – Java Backend, slough col-narrow-left Client: TechHeads Location: slough, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 2 Posted: 06.06.2025 Expiry Date: 21.07.2025 col-wide Job Description … London (5 days onsite, with some ad-hoc flexibility) TechHeads is currently seeking a Senior Software Engineer with strong Java backend experience, DevOps awareness, and proven technical leadership capabilities to join our Client’s London team. This is a high-impact role involving the design, development, and … both engineering efforts and mentoring team members, while collaborating with globally distributed teams in the US, Ireland and India. Responsibilities: Design, develop, and maintain Java-based backend services using Spring Boot , REST/GraphQL , Kafka , PostgreSQL , and RabbitMQ . Contribute to infrastructure modernisation efforts, working closely with DevOps teams More ❯

Senior Software Engineer (Java) – Greenfield Cyber Security SaaS Solutions Permanent ¦¦ Onsite ¦¦ London £85,000 - £100,000 DOE TechHeads is proud to partner with a global cybersecurity leader on a high-impact opportunity for a Senior Software Engineer. This permanent role based onsite in central London … week), offers the chance to work shoulder-to-shoulder with a world-class team on complex, secure SaaS systems powering global enterprises. As a Senior Backend Engineer, you’ll play a key role in designing and building greenfield backend services using Java and Spring Boot , with a … and scalable systems, and play a key role in a global product roadmap , we want to hear from you. Responsibilities: Design, develop, and maintain Java-based backend services using Spring Boot, REST/GraphQL, Kafka, PostgreSQL, and RabbitMQ. Contribute to infrastructure modernisation efforts, working closely with DevOps teams on More ❯

We are currently partnering with a global technology leader seeking a Senior Java Developer. You will be at the forefront of cutting-edge technology, shaping the way millions of users experience seamless digital solutions. This is an opportunity to modernise and enhance industry-leading solutions, ensuring they remain … reliable and scalable. As a Senior Java Developer , you will provide technical guidance and mentor a team of developers, fostering technical excellence and delivering high-quality software solutions. Working in an agile environment, you’ll collaborate with cross-functional teams to define, design, and implement innovative features while … mentoring junior engineers. Duties: Develop high-quality, performant, and reliable Java applications. Guide and mentor developers, including offshore teams and contractors. Oversee software architecture, ensuring seamless integration with various platforms. Gather and analyse requirements, refining features and technical solutions. Lead the estimation process and ensure development work is accurately More ❯

We are currently partnering with a global technology leader seeking a Senior Java Developer. You will be at the forefront of cutting-edge technology, shaping the way millions of users experience seamless digital solutions. This is an opportunity to modernise and enhance industry-leading solutions, ensuring they remain … reliable and scalable. As a Senior Java Developer , you will provide technical guidance and mentor a team of developers, fostering technical excellence and delivering high-quality software solutions. Working in an agile environment, you’ll collaborate with cross-functional teams to define, design, and implement innovative features while … mentoring junior engineers. Duties: Develop high-quality, performant, and reliable Java applications. Guide and mentor developers, including offshore teams and contractors. Oversee software architecture, ensuring seamless integration with various platforms. Gather and analyse requirements, refining features and technical solutions. Lead the estimation process and ensure development work is accurately More ❯

Job Description Senior Software Engineer - Full Stack Engineer - Java, React, SpringBoot An exciting opportunity to join an innovative SaaS provider in the online gaming space. Work with top-tier clients in the UK and USA, contributing to the development of new software solutions within a rapidly … expanding company. Work within their software engineering squads to develop new and modernize legacy applications using microservices. You'll primarily focus on Java backend, with a practical understanding of frontend development. As such you will need: Expertise in core Java development Spring Boot Commercial JavaScript experience Strong React More ❯

Social network you want to login/join with: Senior Software Engineer – Java - FinTech Remote First | London (UK) | Up to £120k + Benefits Are you a Java developer who thrives in a collaborative, test-driven environment? Do you believe in pair programming, continuous integration, and clean … maintainable code? If so, we’d love to hear from you. Our FinTech client could be the ideal role for you.... Skills: Commercial Java experience - ideally in a fintech, performance environment Strength with Core Java Strong understanding of TDD Clear communication and teamwork Extreme Programming (XP) principles, with … is key. We value growth and flexibility, welcoming developers from all backgrounds. What You’ll Be Doing Building resilient and adaptable fintech platforms in Java Refactoring to improve code design Writing comprehensive tests for every commit Automating processes to improve efficiency Rotating across teams to enhance collaboration #J More ❯

marketing teams. We’re backed by the University, our customers and leading venture capital funds. Our product Diffblue Cover automatically writes unit tests for Java applications using AI, mimicking human-written tests but working 250 times faster than a human – and it never gets bored or makes a mistake. … a modern business, and that when different opinions, backgrounds and life views meet, better results are obtained. Job purpose We are looking for skilled Java developers to work as part of a team with experts in AI, static and dynamic program analysis, and software verification. This is a great … opportunity for a Java developer to learn new AI and program synthesis techniques. Although we are geeks at heart we also have a razor sharp focus on our customers as we strive to deliver unparalleled value in a new and exciting space. We are seeking an experienced Java More ❯

Senior Backend Java Developer This is an office-based role in London, Monday to Friday Financial Services £70,000 - £80,000 Are you an experienced Java Developer looking for a truly impactful role? My client, a leading FCA-regulated trading brokerage, is building a brand-new, best … and seamlessly integrate third-party services. Actively contribute to code reviews and troubleshoot production issues. What we're looking for: Minimum 8 years of Java development experience. Strong expertise in Enterprise Java, Spring/Spring Boot, Web, Security, ORM, Junit/Mockito, Maven/Gradle. Command of SQL More ❯

Endeavour Recruitment have an outstanding opportunity for an experienced Software Engineer (Java/C++) for a globally renowned software business. Within this role the Senior Software Engineer will form part of team dedicated to designing, coding and testing a range of industry leading products. As senior … the development process Contribute to planning Take overall responsibility for the design and implementation of projects You will have proven experience of; Delivering complex Java and C++ applications Developing within the Scrum framework Writing Tests and TDD OO programming experience Test Automation Desirable experience of; Experience as a Scrum More ❯

or be prepared to undergo National Security Vetting (NSV) to Security Check (SC) level as a minimum. Your future duties and responsibilities As a Senior Software Engineer you’ll join a flagship UK Government programme working on a project that helps protect UK citizens’ lives. Working as part … of a well-functioning team, you'll immediately add Java expertise at an important stage of the project cycle. You’ll also discover: • A unique level of variety across different clients and industry sector • Further interesting and challenging projects to stretch your skills • Training and support specifically tailored to … discussions, and shared best practice Required qualifications to be successful in this role Essential skills to be successful in this role: • Broad knowledge of JAVA/JAVA EE - current and legacy versions, including best practices and patterns for code migrations • Knowledge of best practices regarding continuous Integration/ More ❯

London, Canary Wharf (Hybrid) Engagement: Long-term engagement within one of the world’s most prominent banking institutions This is more than just a Java development job — it’s an opportunity to work at the core of a global financial powerhouse, supporting a large-scale transformation of how secure … London’s iconic Canary Wharf, with a hybrid model that supports flexibility and work-life balance. If you're passionate about writing clean, modern Java code and want to see your work used at a global scale, this is the kind of long-term project that builds real career … momentum. What You’ll Do 🔹 Develop and maintain internal Java-based tools and microservices that improve how developers build secure applications 🔹 Contribute to enterprise-wide initiatives around software composition analysis and supply chain transparency 🔹 Work closely with platform engineers, security experts, and software developers across multiple regions 🔹 Help standardize More ❯