1 to 25 of 28 Permanent Senior Java Software Engineer Jobs in the South East

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-in-class trading and investment platform, and … maintainable code. Implement APIs 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/NoSQL, Hibernate/… Join early and grow with the expanding team. Innovative Culture: Be part of a unique startup culture within a well-established group, embracing AI applications in finance and software development. Excellent Benefits: Competitive salary, performance bonus, private healthcare, gym discount, pension scheme, and a collaborative environment. Candidates must be eligible to work in the UK; no visa sponsorship 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-in-class trading and investment platform, and … maintainable code. Implement APIs 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/NoSQL, Hibernate/… Join early and grow with the expanding team. Innovative Culture: Be part of a unique startup culture within a well-established group, embracing AI applications in finance and software development. Excellent Benefits: Competitive salary, performance bonus, private healthcare, gym discount, pension scheme, and a collaborative environment. Candidates must be eligible to work in the UK; no visa sponsorship 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-in-class trading and investment platform, and … maintainable code. Implement APIs 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/NoSQL, Hibernate/… Join early and grow with the expanding team. Innovative Culture: Be part of a unique startup culture within a well-established group, embracing AI applications in finance and software development. Excellent Benefits: Competitive salary, performance bonus, private healthcare, gym discount, pension scheme, and a collaborative environment. Candidates must be eligible to work in the UK; no visa sponsorship More ❯

Job Title: Java Developer (Electronic Trading Platform - FIC) Contract Type: Outside IR35 Location: London Day Rate: Up to £850 per day Flexible Hybrid working: 1-2 days a week in London City offices Client: Prestigious Investment Bank Industry: Investment Banking Duration: 12 months + Overview: We are seeking an experienced Java Developer to join a high … ensure real-time decision-making capabilities. Integrate with Instrumentation Platforms : Integrate the platform with Prometheus and Geneos for continuous monitoring, diagnostics, and system health checks. Desired technical Skills: Java Expertise: Extensive experience with Core Java , focusing on low-level performance tuning, multithreading , and garbage collection optimization . FIC or similar business knowledge: Strong understanding of FIC More ❯

Job Title: Java Developer (Electronic Trading Platform - FIC) Contract Type: Outside IR35 Location: London Day Rate: Up to £850 per day Flexible Hybrid working: 1-2 days a week in London City offices Client: Prestigious Investment Bank Industry: Investment Banking Duration: 12 months + Overview: We are seeking an experienced Java Developer to join a high … ensure real-time decision-making capabilities. Integrate with Instrumentation Platforms : Integrate the platform with Prometheus and Geneos for continuous monitoring, diagnostics, and system health checks. Desired technical Skills: Java Expertise: Extensive experience with Core Java , focusing on low-level performance tuning, multithreading , and garbage collection optimization . FIC or similar business knowledge: Strong understanding of FIC More ❯

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 artificial intelligence using … novel 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 up some of the best known … technology 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+ in a commercial Development role - currently More ❯

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 artificial intelligence using … novel 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 up some of the best known … technology 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+ in a commercial Development role - currently More ❯

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 artificial intelligence using … novel 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 up some of the best known … technology 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+ in a commercial Development role - currently More ❯

in a fast-paced environment and is passionate about leveraging cutting-edge technology to drive change. What you'll need: 5+ years of commercial development experience, focused on Java development (preferably web-based applications) Experience working with Rest APIs Be able to implement technical solutions Experience working with databases. Experience with continuous integration and deployment processes Collaborate with More ❯

in a fast-paced environment and is passionate about leveraging cutting-edge technology to drive change. What you'll need: 5+ years of commercial development experience, focused on Java development (preferably web-based applications) Experience working with Rest APIs Be able to implement technical solutions Experience working with databases. Experience with continuous integration and deployment processes Collaborate with More ❯

in a fast-paced environment and is passionate about leveraging cutting-edge technology to drive change. What you'll need: 5+ years of commercial development experience, focused on Java development (preferably web-based applications) Experience working with Rest APIs Be able to implement technical solutions Experience working with databases. Experience with continuous integration and deployment processes Collaborate with More ❯

Senior Software Engineer – Java Backend London (5 days onsite, with some ad-hoc flexibility) £85,000 – £120,000 (Permanent) 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 … at significant scale, leading 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 on Kubernetes , CI/CD … product and engineering groups in the US, Ireland and India, to ensure alignment and execution. Build and deploy secure, resilient APIs (REST/GraphQL) and optimise the full software development lifecycle through automation. Requirements: 7–10+ years of professional experience in software engineering, with a strong focus on Java backend development . Solid understanding More ❯

Senior Software Engineer – Java Backend London (5 days onsite, with some ad-hoc flexibility) £85,000 – £120,000 (Permanent) 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 … at significant scale, leading 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 on Kubernetes , CI/CD … product and engineering groups in the US, Ireland and India, to ensure alignment and execution. Build and deploy secure, resilient APIs (REST/GraphQL) and optimise the full software development lifecycle through automation. Requirements: 7–10+ years of professional experience in software engineering, with a strong focus on Java backend development . Solid understanding 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 deployment of backend services that power our client’s security … at significant scale, leading 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 on Kubernetes , CI/CD 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 scoped. Debug existing code, maintain system performance, and drive best coding practices. Manage defects and oversee their resolution 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 (5 days a … 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 strong emphasis on DevOps, automation, and performance … your career, build secure 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 Kubernetes, CI/CD pipelines 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 (5 days a … 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 strong emphasis on DevOps, automation, and performance … your career, build secure 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 Kubernetes, CI/CD pipelines 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 (5 days a … 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 strong emphasis on DevOps, automation, and performance … your career, build secure 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 Kubernetes, CI/CD pipelines 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 scoped. Debug existing code, maintain system performance, and drive best coding practices. Manage defects and oversee their resolution More ❯

up with a talent for solving problems, we will give you the opportunity to have real-world impact and purpose. Working in our Central Government business unit, our Software Engineers are trusted to work closely with a wide range of clients on exciting projects with real-world critical purpose and positive impact on UK Citizens' lives. These roles … hybrid working basis – you will be required to work in Reading and/or London 2/3 days a month. 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 sectors. Further interesting and challenging projects to stretch your skills. Training and support specifically tailored to give you the right skills for your career/role – including 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 … leadership and motivation Support 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 Master, Project or Technical Lead … In return you can expect a salary of £50,000+, excellent benefits and the opportunity to play a critical role in the ongoing development of a market leading software product. The role is based near Reading, walking distance from a mainline station and a short distance from the M4, making an easy commute from London and much of 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 programming culture ensures high-quality code and continuous learning Continuous integration—every … is releasable, and automation 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-18808-Ljbffr 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 a strong focus on TDD, BDD, and DDD. Pair programming cultur e … is releasable, and automation 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-18808-Ljbffr 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 a strong focus on TDD, BDD, and DDD. Pair programming cultur e … is releasable, and automation 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-18808-Ljbffr More ❯

Senior Java Developer 🌍 Up to £150k 💸 - Remote Working 🏡 – 6+ years experience Our client, a GreenTech specialising in optimum renewable energy software, is revolutionising the energy industry by making sustainable living accessible and effortless for both suppliers and consumers. They’re looking for a Senior Java Developer who is able to … leverage advanced technologies to create impactful solutions in a fast-paced, collaborative environment. Role Highlights 🌟 Design and implement high-performance software systems using Core Java , without relying on frameworks. Tackle multi-threaded, low-latency challenges, manage extensive data streams, and optimise asynchronous programming for real-time scalability. Drive projects that advance sustainable energy solutions, contributing to … a greener future. Key Requirements ✅ 6+ years with extensive hands-on experience in Core Java, developing systems from the ground up without frameworks. Advanced proficiency in multi-threading, low-latency solutions, and data stream management. Strong understanding and practical expertise in asynchronous techniques. A degree in Computer Science, Engineering, or a related discipline is desirable. Benefits 🌈 Up to More ❯