1 to 25 of 73 Permanent Java Software Engineer Jobs in England

Senior Java Software Engineer - User Interfaces Location: Guildford, GU1 4QU Salary: Circa £50K - £85K per annum, DOE + Benefits, Bonus and Relocation Contract: Full time, Permanent Benefits: Competitive salary, Annual bonus, Private medical insurance, Membership fees to professional organisations, such as the IET or BCS, 8% employer … Kaon's success is a result of the skills and effort of our engineering team which is made up of signal processing, acoustic, software and systems engineers. Due to our continued success, we are looking to expand our highly skilled engineering team. The Role: We are currently seeking ...

Java Software Engineer Bristol (Hybrid – 3 days per week) Up to £50,000 ClimateTech Want to grow your backend skills while working on meaningful climate tech? At Bohr, the software you build helps reduce methane emissions across Europe’s gas networks. This is an opportunity … high-potential junior or early mid-level Java engineer to work on real-world systems that directly support cleaner, safer infrastructure and the transition to net zero. About Bohr Bohr exists to decarbonise energy through innovation. Through our methane emissions division, Tectrac, we combine mobile leak detection technology ...

Full Stack Software Engineer Java React Banking London This is a new and exclusive opportunity for a Full Stack Software Engineer who is primarily front office focused with React (75%) and Java (25%) to join this thriving front office derivatives team in this investment … bank Role details Title: Full Stack Software Engineer Technical focus - React (75%) and Java (25%) Employer: front office banking derivatives Permanent role salary £70-85,000 plus bonus and pension Location: London City and home working hybrid 50/50% Technical stack: primarily React focused with ...

Backend Software Engineer/SRE (Java JVM) London/WFH to £110k Are you a Backend Software Engineer/SRE with a strong knowledge of Java and JVM internals? You could be progressing your career in an impactful role at a global CFD trading … company that has been consistently voted as one of the UKs top employers. As a Backend Software Engineer/SRE you will collaborate with development teams, as a trusted technical advisor to influence system design, ensuring reliability standards and driving improvements across the platform. You'll have ...

Software Engineer/Developer (Java Spring Boot AWS) London/WFH to £65k Are you a backend focused Java Software Engineer looking for an opportunity where you can make an impact? You could be progressing your career at a growing US based tech company … that provide a platform for gaming and gambling businesses to retain their customer base, as they expand their UK presence. As a Software Engineer you will be instrumental in helping the company to bring all tech inhouse; you'll design and develop new features and enhancements ...

Full Stack Java Software Engineer Warrington - hybrid £50,000 - £60,000 DOE + benefits Focus 5 Recruitment are working with an exciting software business who have just been awarded 2 large contracts with international Mobile Network Operators. Appointed to help them source suitable Full Stack Java Software Engineers, we're looking for candidates who have experience of producing efficient code to enable the smooth and efficient running of both internal and client facing systems. This is an amazing opportunity to work with a growing and ambitious software business who have contracts with some ...

Full Stack Java Software Engineer Warrington - hybrid £50,000 - £60,000 DOE + benefits Focus 5 Recruitment are working with an exciting software business who have just been awarded 2 large contracts with international Mobile Network Operators. Appointed to help them source suitable Full Stack Java Software Engineers, we’re looking for candidates who have experience of producing efficient code to enable the smooth and efficient running of both internal and client facing systems. This is an amazing opportunity to work with a growing and ambitious software business who have contracts with some ...

Lead Software Engineer (Java/Typescript) We are looking for a highly skilled Lead Software Engineer to take ownership of one of our clients core platform systems. In this pivotal role, you will guide a talented engineering team, ensuring the stability, performance, and ongoing evolution … will help shape the technical roadmap and ensure our systems remain scalable, reliable, and innovative. Key Responsibilities Technical Leadership: Provide technical direction across the software development lifecycle, ensuring alignment with internal standards and best practices. Hands-On Coding: Contribute directly to the codebase and support sprint goals with high ...

Lead Software Engineer (Java/Typescript) We are looking for a highly skilled Lead Software Engineer to take ownership of one of our clients core platform systems. In this pivotal role, you will guide a talented engineering team, ensuring the stability, performance, and ongoing evolution … will help shape the technical roadmap and ensure our systems remain scalable, reliable, and innovative. Key Responsibilities Technical Leadership: Provide technical direction across the software development lifecycle, ensuring alignment with internal standards and best practices. Hands-On Coding: Contribute directly to the codebase and support sprint goals with high ...

Senior Java Engineer | hybrid (2 days in office) | Up to £85k Want to work for a global technology company that helps businesses easily connect, manage, and scale their devices using secure and reliable mobile connectivity worldwide. We’re looking for a Senior Software Engineer to join … properly , using sound engineering theory and modern architectural patterns. What You’ll Be Doing Designing and building scalable, event-driven systems Working heavily with Java , applying strong OOP principles and design patterns Contributing to software and system architecture decisions Challenging ideas constructively and raising engineering standards Supporting ...

Senior Software Engineer/Developer (Java Full Stack) Guildford/WFH to £80k Do you have strong Java skills combined with full stack development experience? You could be progressing your career in a senior, hands-on role at a scaling technology company that produces software solutions for the defence and civil aviation sector. As a Senior Software Engineer you will design and develop client based features and enhancements, working across the full technology stack on confidential projects. You'll use a range of technology with a focus on Java, Spring Boot ...

Java Software Engineer A leading trading firm in London is growing its engineering team and is looking for a high-performance Java Engineer to help build ultra-low-latency systems used directly on live trading desks. What You’ll Be Doing Designing and building … latency Java systems used in electronic trading Developing highly concurrent, multithreaded applications Optimising performance at the microsecond level Working closely with traders, quants, and infrastructure teams Improving throughput, stability, and execution speed Writing clean, well-tested production code What We’re Looking For Strong commercial experience with Core Java ...

Lead Software Engineer – Java Microservices | London (1 day per week on-site) | £74,000 – £92,000 + Package We're partnering with a leading UK bank to recruit a Lead Software Engineer with strong Java and microservices expertise. This is a hands-on role … building high-performance, scalable software for real-world, high-traffic systems. About the Role You'll join a permanent feature team, taking end-to-end ownership of services, from design and development to testing, deployment, and optimisation. Your focus will be on building robust microservices that support high-traffic ...

Lead Software Engineer – Java Microservices | London (1 day per week on-site) | £74,000 – £92,000 + Package We’re partnering with a leading UK bank to recruit a Lead Software Engineer with strong Java and microservices expertise. This is a hands-on role … building high-performance, scalable software for real-world, high-traffic systems. About the Role You’ll join a permanent feature team, taking end-to-end ownership of services, from design and development to testing, deployment, and optimisation. Your focus will be on building robust microservices that support high-traffic ...

Java Engineer – 6-Month Contract – Hybrid (2 days on site, London) - Day Rate: Up to £700 (Inside IR35) Join a high-performing engineering team working on large-scale, high-availability systems used by millions. This role offers the chance to build and enhance complex backend services … modern, cloud-native environment. What you'll be doing: Designing and developing performant, scalable backend systems using Java (up to Java 21). Building microservices with Spring Boot and related frameworks. Developing and maintaining RESTful APIs and event-driven systems. Writing clean, testable code and following TDD principles. ...

Java Engineer – 6-Month Contract – Hybrid (2 days on site, London) - Day Rate: Up to £700 (Inside IR35) Join a high-performing engineering team working on large-scale, high-availability systems used by millions. This role offers the chance to build and enhance complex backend services … modern, cloud-native environment. What you’ll be doing: Designing and developing performant, scalable backend systems using Java (up to Java 21). Building microservices with Spring Boot and related frameworks. Developing and maintaining RESTful APIs and event-driven systems. Writing clean, testable code and following TDD principles. ...

Java Software Engineer Location: London Business Unit: Central Government, Law Enforcement and National Security Level: Mid-Senior Employment Type: Permanent Clearance: Must hold active UK Security Clearance About the Opportunity We are partnering with several businesses seeking experienced Java Software Engineers to help deliver mission … intersection of advanced engineering and real-world problem-solving, developing cutting-edge products that counter evolving threats. Our teams work with leading technologies across Software Application, Cyber, Cloud, DevOps/SRE, and Platform Engineering, supporting customers across the National Security, Defence and Intelligence community. With long-term programmes secured ...

Java Software Engineer Location: London Business Unit: Central Government, Law Enforcement and National Security Level: Mid-Senior Employment Type: Permanent Clearance: Must hold active UK Security Clearance About the Opportunity We are partnering with several businesses seeking experienced Java Software Engineers to help deliver mission … intersection of advanced engineering and real-world problem-solving, developing cutting-edge products that counter evolving threats. Our teams work with leading technologies across Software Application, Cyber, Cloud, DevOps/SRE, and Platform Engineering , supporting customers across the National Security, Defence and Intelligence community. With long-term programmes secured ...

Director - Lead Software Engineer (Java, Equities) Location: London | Division: Investment Banking | Type: Full-time About the Role We are seeking a Director-level Lead Software Engineer to join our Equities Technology team within the Front Office. This is a hands-on, independent contributor role where … closely with traders, quants, and other technologists to deliver innovative solutions in a fast-paced environment. Key Responsibilities Lead the design and development of Java-based trading and risk platforms for equities. Deliver low-latency, high-throughput systems for order management and execution. Collaborate with front-office stakeholders ...

Java Software Engineer Location: Cheltenham Business Unit: Central Government, Law Enforcement and National Security Level: Mid-Senior Employment Type: Permanent Clearance: Must hold active UK Security Clearance About the Opportunity We are partnering with a leading Engineering business seeking experienced Java Software Engineers to help … this is an opportunity to join a high-growth environment with genuine impact. What You’ll Be Doing Designing, developing, and maintaining secure, scalable Java applications and microservices using Spring Boot. Translating technical designs into clean, test-driven, production-ready code aligned with engineering best practices. Building and maintaining ...

Java Software Engineer – Defence, Cyber & Intelligence | Full-Time | eDV Clearance Required We are seeking Software Engineers at all levels to join a leading aerospace and defence organisation, delivering mission-critical software for high-impact programmes in the Defence, Cyber, and Intelligence sectors. You'll work … across the UK. This is a fantastic opportunity to contribute to meaningful projects while enjoying flexible working arrangements and excellent development opportunities. Key Responsibilities: Software design, development, and debugging on secure systems Creating and maintaining test frameworks (e.g., JUnit 5) Developing in Linux environments with modern languages (Java ...

Java Software Engineer – Defence, Cyber & Intelligence | Full-Time | eDV Clearance Required We are seeking Software Engineers at all levels to join a leading aerospace and defence organisation, delivering mission-critical software for high-impact programmes in the Defence, Cyber, and Intelligence sectors. You'll work … across the UK. This is a fantastic opportunity to contribute to meaningful projects while enjoying flexible working arrangements and excellent development opportunities. Key Responsibilities: Software design, development, and debugging on secure systems Creating and maintaining test frameworks (e.g., JUnit 5) Developing in Linux environments with modern languages (Java ...

Java Software Engineer required for our client in Leatherhead, Surrey. This role is 4 days a week on-site. Key Responsibilities: Develop and maintain Java-based applications, APIs, and backend services Collaborate with cross-functional teams to analyze requirements and deliver features Participate in code reviews … contribute to continuous code quality improvement Debug, troubleshoot, and resolve software defects and production issues Write clean, maintainable, and well-documented code Optimize application performance and scalability Stay up to date with emerging Java technologies and best practices Required skills/experience: 3-5 years of hands ...

Senior Java Engineer – Actuarial Data Squad – Outside IR35 - Contract We're looking for a Senior Java Engineer to join a high-profile project focused on backend systems that automate complex financial and actuarial processes. This is a hands-on role delivering backend solutions under tight deadlines … highly regulated environment. Key Responsibilities: Develop backend systems and APIs in Java, using the Spring ecosystem Work with AWS and infrastructure-as-code tools such as Terraform or Helm Design and implement scalable, production-ready systems for complex financial processes Collaborate with business and technical stakeholders to align solutions ...

Senior Java Engineer – Actuarial Data Squad – Outside IR35 - Contract We're looking for a Senior Java Engineer to join a high-profile project focused on backend systems that automate complex financial and actuarial processes. This is a hands-on role delivering backend solutions under tight deadlines … highly regulated environment. Key Responsibilities: Develop backend systems and APIs in Java, using the Spring ecosystem Work with AWS and infrastructure-as-code tools such as Terraform or Helm Design and implement scalable, production-ready systems for complex financial processes Collaborate with business and technical stakeholders to align solutions ...