1 to 25 of 113 Permanent 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 they need your expertise … 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/Spring … Opportunity: 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 they need your expertise … 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/Spring … Opportunity: 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 they need your expertise … 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/Spring … Opportunity: 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-profile investment … to 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 markets 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-profile investment … to 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 markets 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 London team. This is a high-impact role involving the … systems 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 … including 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 of Spring 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 London team. This is a high-impact role involving the … systems 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 … including 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 of Spring 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 in a Senior Full Stack role Solid experience of Java strong TypeScript/React (other JS 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 in a Senior Full Stack role Solid experience of Java strong TypeScript/React (other JS 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 in a Senior Full Stack role Solid experience of Java strong TypeScript/React (other JS 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 platform. You’ll work on systems 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 pipelines , and legacy system migrations. 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 at scale. You'll help shape technical direction , lead by example in … elevate 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 at scale. You'll help shape technical direction , lead by example in … elevate 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 at scale. You'll help shape technical direction , lead by example in … elevate 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 across the development team. Experience: 4+ years of experience in software 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 across the development team. Experience: 4+ years of experience in software More ❯

of robust systems that generate and manage automated documentation workflows for banks. While the broader tech stack includes Node.js, JavaScript, and various database technologies, this role focuses primarily on Java and backend architecture, especially for candidates without deep JavaScript experience. Key Responsibilities Develop, maintain, and scale backend services in Java Support and eventually contribute to Node.js components (with … and contribute to a high-quality engineering culture Engage with banking-focused client requirements in a structured, agile environment Key Skills and Experience 4–7 years' professional experience in Java development Solid understanding of Java frameworks (Spring Boot, Hibernate) Practical knowledge of database systems (e.g., PostgreSQL, MySQL, MongoDB) Strong grasp of software engineering fundamentals and clean coding More ❯

of robust systems that generate and manage automated documentation workflows for banks. While the broader tech stack includes Node.js, JavaScript, and various database technologies, this role focuses primarily on Java and backend architecture, especially for candidates without deep JavaScript experience. Key Responsibilities Develop, maintain, and scale backend services in Java Support and eventually contribute to Node.js components (with … and contribute to a high-quality engineering culture Engage with banking-focused client requirements in a structured, agile environment Key Skills and Experience 4–7 years' professional experience in Java development Solid understanding of Java frameworks (Spring Boot, Hibernate) Practical knowledge of database systems (e.g., PostgreSQL, MySQL, MongoDB) Strong grasp of software engineering fundamentals and clean coding More ❯

of robust systems that generate and manage automated documentation workflows for banks. While the broader tech stack includes Node.js, JavaScript, and various database technologies, this role focuses primarily on Java and backend architecture, especially for candidates without deep JavaScript experience. Key Responsibilities Develop, maintain, and scale backend services in Java Support and eventually contribute to Node.js components (with … and contribute to a high-quality engineering culture Engage with banking-focused client requirements in a structured, agile environment Key Skills and Experience 4–7 years' professional experience in Java development Solid understanding of Java frameworks (Spring Boot, Hibernate) Practical knowledge of database systems (e.g., PostgreSQL, MySQL, MongoDB) Strong grasp of software engineering fundamentals and clean coding More ❯

of robust systems that generate and manage automated documentation workflows for banks. While the broader tech stack includes Node.js, JavaScript, and various database technologies, this role focuses primarily on Java and backend architecture, especially for candidates without deep JavaScript experience. Key Responsibilities Develop, maintain, and scale backend services in Java Support and eventually contribute to Node.js components (with … and contribute to a high-quality engineering culture Engage with banking-focused client requirements in a structured, agile environment Key Skills and Experience 4–7 years' professional experience in Java development Solid understanding of Java frameworks (Spring Boot, Hibernate) Practical knowledge of database systems (e.g., PostgreSQL, MySQL, MongoDB) Strong grasp of software engineering fundamentals and clean coding More ❯

backed 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 accreditation and certifications. Impactful work More ❯

Lead Software Engineer/Software Architect My non-profit American cancer research tech company is looking for an experienced development lead to take the lead in a new hands-on lead engineer position with the company. The role supports hybrid working with 2 days being required onsite in Oxford and 3 days WFH. Ideally starting on … HANDS-ON LEADERSHIP ROLE WHERE YOU WILL ALSO COACH OTHERS (ideally 10+ years of experience). Preferably, you will have certifications in AWS or cloud architecture: AWS Cert DevOps Engineer Professional AWS Cert Solutions Architect Professional AWS Cert Developer Associate AWS Cert Big Data AWS Cert Cloud Practitioner Essential Skills Over 10 years of cloud development experience in languages … such as Java, JavaScript, Python, AWS. Expertise in building enterprise-level integration solutions. 10 years of expertise in designing, developing, and managing APIs, including AsyncAPIs, RESTful APIs, SOAP APIs, GraphQL, and webhooks for integration purposes. Expertise in designing and implementing enterprise-level integration and orchestration solutions in AWS using services like EventBridge, Lambda, SNS/SQS, API Gateway, Transfer More ❯

thrives 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 ❯

thrives 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 ❯

thrives 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 ❯