1 to 25 of 44 Java Developer Jobs in the South East

Lead Java Developer/Software Engineer London/WFH to £115k Are you a hands-on Java Developer with leadership skills? You could be progressing your career in a Lead Java Developer role at a global FinTech/CFD trading company that has been consistently voted as one of the UKs top employers. As … a Lead Java Developer you'll join a fairly new team working on a new crypto offering and split your time between hands-on development with people management (70/30). You'll set the technical direction, mentor engineers and ensure code quality, observability, scalability and security are embedded into high-quality, high-impact releases. You'll … be working with a modern, cloud native tech stack using Java, Spring Boot, AWS, Kafka and CI/CD to build highly scalable, distributed systems with 24/7 availability. Location/WFH: There's a hybrid model with two days a week work from home, when you are in the office you'll be based in the City More ❯

Java Developer - Remote Working Lynx are currently working with a large IT consultancy to help them source a Senior Java Developer . Our client is large global Consultancy who work with enterprise clients, solving their business and technology problems using cutting edge Solutions. Responsibilities: Engaging in the entire software development lifecycle, from gathering requirements and designing … Advocating for and contributing to best practices in software engineering across teams and projects Key skills and experience: Must be either SC cleared or eligible Experience working as a Java Developer Java development experience Experience working within cloud environments If this role sounds of interest, then please apply with your updated CV. More ❯

Java Developer/Backend Software Engineer (Java AWS) London/WFH to £100k Opportunity to progress your career in a senior, hands-on Java Developer role at a global FinTech/CFD trading company that has been consistently voted as one of the UKs top employers. W hat's in it for you: Salary to … Carers networks with an annual budget for organising events and projects that foster an open, diverse and inclusive culture Plus a range of other perks Your role: As a Java Developer you will join a fairly new team working on a new crypto offering to design, develop and implement high performance cloud-native backend services including owning DevOps … processes to ensure systems are robust, secure and observable. You'll be working with a modern tech stack using Java, Spring Boot, CI/CD, Kubernetes, AWS, EKS and Grafana/Splunk. About you: You have advanced backend software engineering experience with Java, Spring Boot, REST, Postgres, Redis You have experience of running production workloads on Kubernetes (Amazon More ❯

Senior Java Developer - Remote Working Lynx are currently working with a large IT consultancy to help them source a Senior Java Developer . Our client is large global Consultancy who work with enterprise clients, solving their business and technology problems using cutting edge Solutions. Responsibilities: Engaging in the entire software development lifecycle, from gathering requirements and … Advocating for and contributing to best practices in software engineering across teams and projects Key skills and experience: Must be either SC cleared or eligible Experience working as a Java Developer Java development experience Experience working within cloud environments If this role sounds of interest, then please apply with your updated CV. More ❯

Fidessa Developer (Java Spring Boot API) London to £135k Are you an experienced Java Developer with a strong knowledge of Fidessa and an interest in Capital Markets? Join the Investment Management division of a global bank, where you'll play a key role in shaping their trading technology by enhancing and evolving the Fidessa Order Management … You'll work on high-impact projects, collaborating with regional and global stakeholders to deliver robust, scalable solutions in a fast-paced financial environment. Your Role As a Fidessa Developer, you will: Design and implement new features and enhancements on the Fidessa platform Build high-performance services using Java, Spring Boot and RESTful APIs Collaborate closely with stakeholders … Location/WFH: You'll be based in the London office and have flexibility to work from home once a week. About you: You have a deep knowledge of Java including Spring Boot and APIs You have strong experience of developing on Fidessa OMS You have an understanding of Capital Markets You have excellent communication and collaboration skills You More ❯

Java Developer/Technical Lead London/WFH to £115k Are you a hands-on Java Developer with technical leadership skills? You could be progressing your career in a hands-on leadership role at a global FinTech/CFD trading company that has been consistently voted as one of the UKs top employers. What's in … Carers networks with an annual budget for organising events and projects that foster an open, diverse and inclusive culture Plus a range of other perks Your role: As a Java Developer/Technical Lead you'll join a fairly new team working on a new crypto offering and split your time between hands-on development with people management … engineers and ensure code quality, observability, scalability and security are embedded into high-quality, high-impact releases. You'll be working with a modern, cloud native tech stack using Java, Spring Boot, AWS, Kafka and CI/CD to build highly scalable, distributed systems with 24/7 availability. Location/WFH: There's a hybrid model with two More ❯

Java Developer/Technical Lead London/WFH to £115k Are you a hands-on Java Developer with technical leadership skills? You could be progressing your career in a hands-on leadership role at a global FinTech/CFD trading company that has been consistently voted as one of the UKs top employers. W hat's … Carers networks with an annual budget for organising events and projects that foster an open, diverse and inclusive culture Plus a range of other perks Your role: As a Java Developer/Technical Lead you'll join a fairly new team working on a new crypto offering and split your time between hands-on development with people management … engineers and ensure code quality, observability, scalability and security are embedded into high-quality, high-impact releases. You'll be working with a modern, cloud native tech stack using Java, Spring Boot, AWS, Kafka and CI/CD to build highly scalable, distributed systems with 24/7 availability. Location/WFH: There's a hybrid model with two More ❯

Lead Java Developer 6 Months Hybrid working 1 day a week on site £500-£550 per a day inside IR35 Talent Consulting is seeking an experienced Lead Java Developer to join one of our government clients on a large-scale digital transformation programme. You’ll lead a team delivering modern, cloud-native solutions—rebuilding internal systems … creating efficient digital processes, and ensuring scalable, high-quality software delivery. As Lead Java Developer you will be responsible for: Design and develop modern, cloud-based services using Java and Node.js. Build and maintain microservices and UI components, ensuring seamless integration between front-end interfaces and back-end APIs. Implement event-driven solutions using Kafka and other … as Terraform. Create, maintain, and optimize CI/CD pipelines using GitLab CI. Collaborate with designers and front-end developers to deliver modern, responsive UI experiences. As a Lead Developer you will have the following experience: Proven experience leading and mentoring development teams. Extensive hands-on experience developing modern cloud-native applications using Java and Node.js. Strong background More ❯

Lead Java Developer 6 Months Hybrid working 1 day a week on site £500-£550 per a day inside IR35 Talent Consulting is seeking an experienced Lead Java Developer to join one of our government clients on a large-scale digital transformation programme. You’ll lead a team delivering modern, cloud-native solutions—rebuilding internal systems … creating efficient digital processes, and ensuring scalable, high-quality software delivery. As Lead Java Developer you will be responsible for: Design and develop modern, cloud-based services using Java and Node.js. Build and maintain microservices and UI components, ensuring seamless integration between front-end interfaces and back-end APIs. Implement event-driven solutions using Kafka and other … as Terraform. Create, maintain, and optimize CI/CD pipelines using GitLab CI. Collaborate with designers and front-end developers to deliver modern, responsive UI experiences. As a Lead Developer you will have the following experience: Proven experience leading and mentoring development teams. Extensive hands-on experience developing modern cloud-native applications using Java and Node.js. Strong background More ❯

Lead Java Developer 6 Months Hybrid working 1 day a week on site £500-£550 per a day inside IR35 Talent Consulting is seeking an experienced Lead Java Developer to join one of our government clients on a large-scale digital transformation programme. You’ll lead a team delivering modern, cloud-native solutions—rebuilding internal systems … creating efficient digital processes, and ensuring scalable, high-quality software delivery. As Lead Java Developer you will be responsible for: Design and develop modern, cloud-based services using Java and Node.js. Build and maintain microservices and UI components, ensuring seamless integration between front-end interfaces and back-end APIs. Implement event-driven solutions using Kafka and other … as Terraform. Create, maintain, and optimize CI/CD pipelines using GitLab CI. Collaborate with designers and front-end developers to deliver modern, responsive UI experiences. As a Lead Developer you will have the following experience: Proven experience leading and mentoring development teams. Extensive hands-on experience developing modern cloud-native applications using Java and Node.js. Strong background More ❯

Senior Java Developer | SC Clearance Required | Up to £650 per day (Inside IR35) | Remote with Monthly Visits to London | 6 Month Contract MERITUS are working with a large consulting organisation looking for a Senior Java Developer on a project working into a UK Central Government client. You'll play a key role in designing, coding, reviewing … and testing solutions within the Java stack , collaborating with developers, testers, and DevOps engineers. The position also involves working on automated tests, infrastructure updates, and maintaining high-quality standards across all stages of development. The role is remote with monthly visits into the London office on an initial 6 Month contract. Main Responsibilities: Design, code, review, and unit test … applications using the Java stack. Collaborate with cross-functional teams, including developers, testers, and DevOps engineers. Support and enhance legacy systems currently in maintenance mode. Contribute to automated testing (C#) and infrastructure improvements (Docker, Ansible, Python, Linux). Required Skills: Proven experience with Java, Spring, Maven, Git, JUnit, and Web APIs (REST/JSON, XML/SOAP). More ❯

Sr Lead Java Developer - FX Options - Inside IR35 Central London - Hybrid - 3 days on site, 2 days remote 12 months Brief My client is looking for an experienced Lead Java Developer with hands-on experience integrating Quant libraries to join their FX Options technology team. In this contract, you'll take a hands-on leadership role … and delivering solutions for the front office. Key Responsibilities Lead the design and re-engineering of a core FX Options trading platform. Integrate Quant libraries (typically C++) into a Java-based system - focusing on integration, not C++ development. Deliver high-quality Java UI (Swing) components for front-office users. Work closely with Quants, Traders, and Risk teams to … Provide technical leadership , oversee solution design, and drive best coding practices. Be hands-on in development, debugging, and platform optimisation. Required Skills 5-10 year's experience as a Java Developer within front-office or trading environments. Strong Java Core and Swing Proven experience integrating Quant or pricing libraries . Solid business knowledge of FX Options and More ❯

NEW CONTRACT ROLE - Front Office Senior Java Developer - Rates Pricing London-Based Candidates Only | 6-Month Contract (with potential for extension or perm) | Up to £900/day Inside IR35| Hybrid (2-3 Days On-Site) THE OPPORTUNITY We are working on behalf of a banking client to find a highly experienced Front Office Senior Java Developer to join their Rates Pricing team on the trading floor. This is a niche, high-impact role for a strong Java engineer with low-latency trading systems experience and a deep understanding of front office environments, particularly in pricing, booking, and analytics for Rates, Credit, FX, and Equities. You will be working directly with the trading desk to … lifecycle management. Work on complex quantitative and analytics problems in real-time systems. Contribute to the design and architecture of scalable, resilient systems. TECHNICAL STACK/REQUIREMENTS Expert-level Java (core + multi-threading). Proven ability to work with or cross-train into C++/C# (dual-enabled is ideal). Strong exposure to front office environments - you More ❯

Keynes (Hybrid - 2-3 days onsite) Salary: £60,000 - £76,000 + Bonus + Benefits Clearance Required: British Citizens only, SC eligible Our client is seeking an experienced Senior Java Developer to help deliver an award-winning AI innovation toolset supporting public sector data transformation. This role sits at the heart of a full-stack team building secure … engineering, cloud deployment, and delivering secure software at scale - this is a standout opportunity to apply your skills in a meaningful way. Responsibilities: Develop robust back-end services using Java and Spring Boot Build secure APIs and contribute to CI/CD automation and cloud-based deployment Collaborate with front-end developers and cross-functional teams on scalable system … design Implement secure coding practices, data processing, and system testing Optimise application performance and maintain high-quality standards across environments What we're looking for: 6+ years' experience in Java-based development within full stack environments Strong skills in Spring Boot, RESTful APIs, and relational databases (PostgreSQL/MySQL) Experience deploying to Windows/Linux, using Docker and DevOps More ❯

Job: Senior eFX Java Developer - Low Latency London, UK Hybrid working – 3 days on-site Full Time Overview This is a high-profile role working on the eFX Algo IT team. The team develops the pricing, hedging and low latency order and price distribution team systems for the eFX desk. The team consists of Java and C# … developers, developing server-side and UI components, respectively. This role is specifically a low-latency Java role, encompassing pricing work, hedging work, market connectivity work and associated services around that. It is a hands-on development role. As a team member, you would also be expected to contribute towards estimation and the ability to work with functions such as … work within Credit Agricole's compliance culture is a base level requirement. Knowledge of FX or similar low latency trading systems is required. A high technical development ability in Java is also required. Familiarity with at least one delivery technique such as Agile, SCRUM, Kanban and similar would be a strong advantage. The position will also require a production More ❯

Job: Senior eFX Java Developer - Low Latency London, UK Hybrid working – 3 days on-site Full Time Overview This is a high-profile role working on the eFX Algo IT team. The team develops the pricing, hedging and low latency order and price distribution team systems for the eFX desk. The team consists of Java and C# … developers, developing server-side and UI components, respectively. This role is specifically a low-latency Java role, encompassing pricing work, hedging work, market connectivity work and associated services around that. It is a hands-on development role. As a team member, you would also be expected to contribute towards estimation and the ability to work with functions such as … work within Credit Agricole's compliance culture is a base level requirement. Knowledge of FX or similar low latency trading systems is required. A high technical development ability in Java is also required. Familiarity with at least one delivery technique such as Agile, SCRUM, Kanban and similar would be a strong advantage. The position will also require a production More ❯

Job: Senior eFX Java Developer - Low Latency London, UK Hybrid working – 3 days on-site Full Time Overview This is a high-profile role working on the eFX Algo IT team. The team develops the pricing, hedging and low latency order and price distribution team systems for the eFX desk. The team consists of Java and C# … developers, developing server-side and UI components, respectively. This role is specifically a low-latency Java role, encompassing pricing work, hedging work, market connectivity work and associated services around that. It is a hands-on development role. As a team member, you would also be expected to contribute towards estimation and the ability to work with functions such as … work within Credit Agricole's compliance culture is a base level requirement. Knowledge of FX or similar low latency trading systems is required. A high technical development ability in Java is also required. Familiarity with at least one delivery technique such as Agile, SCRUM, Kanban and similar would be a strong advantage. The position will also require a production More ❯

Job Title: Java Developer With Node.js Salary: £55k + 5% Pension + Expenses Location: Remote (Occasional Client Visits +Travel Expenses Covered) Clearance: BPSS Must have Java and Node experience Key Responsibilities Design, develop, and maintain software solutions using Java, Node.js, and TypeScript. Write efficient and secure Shell Scripts to support automation and system tasks. Work within … Participate in code reviews, testing, and debugging processes. Ensure best practices in software development, including version control, CI/CD, and documentation. Required Skills & Experience Proven professional experience in Java and Node.js development. Strong knowledge of JavaScript and TypeScript. Hands-on experience with Linux systems. Proficiency in writing and maintaining Shell Scripts. Solid understanding of software development life cycle More ❯

Our client is seeking Java Developer in Burgess Hill, UK. This is a permanent role, hybrid 3 days a week. Job description: 5–10 years of hands-on experience in Java 8+ programming . Proven expertise in microservices architecture and reactive programming (preferably with Vert.X ). Strong understanding of RESTful APIs , asynchronous programming , and event-driven design More ❯

Java Developer with experience of the ION Marketview product set required by a global banking organisation seeking to increase their footprint in London. We are supporting the programme to grow our client's UK business, which currently utilises the ION suite for fixed income trading. This role will be part of an effort to modernise all aspects of More ❯

Java Developer with experience of the ION Marketview product set required by a global banking organisation seeking to increase their footprint in London. We are supporting the programme to grow our client's UK business, which currently utilises the ION suite for fixed income trading. This role will be part of an effort to modernise all aspects of More ❯

has helped many clients achieve their goals. The 3 G’s of RE: “Get Shit Done.” “Get Over Shit.” “Give a Shit.” We are seeking an experienced and opinionated Java Developer to join our high-performing engineering team, working on l ow latency , high-throughput systems in the payments processing domain. This hybrid role is based in the … UK or US and offers the opportunity to build scalable, real-time services using modern technologies. If you’re passionate about performance, have strong Core Java and SpringBoot expertise, and thrive in a collaborative yet opinionated engineering culture, we want to hear from you. Key Responsibilities : Design, develop, and optimize low-latency, high-throughput backend systems using Core Java … discussions, advocate for best practices, and provide mentorship to peers. Drive performance tuning, fault tolerance, and observability improvements across services. Required Skills & Experience: 5+ years of experience in Core Java development with a focus on performance and memory optimization. Proficient in SpringBoot and microservice-based architecture. Proven experience with low-latency, high-throughput applications (sub-millisecond response times a More ❯

has helped many clients achieve their goals. The 3 G’s of RE: “Get Shit Done.” “Get Over Shit.” “Give a Shit.” We are seeking an experienced and opinionated Java Developer to join our high-performing engineering team, working on l ow latency , high-throughput systems in the payments processing domain. This hybrid role is based in the … UK or US and offers the opportunity to build scalable, real-time services using modern technologies. If you’re passionate about performance, have strong Core Java and SpringBoot expertise, and thrive in a collaborative yet opinionated engineering culture, we want to hear from you. Key Responsibilities : Design, develop, and optimize low-latency, high-throughput backend systems using Core Java … discussions, advocate for best practices, and provide mentorship to peers. Drive performance tuning, fault tolerance, and observability improvements across services. Required Skills & Experience: 5+ years of experience in Core Java development with a focus on performance and memory optimization. Proficient in SpringBoot and microservice-based architecture. Proven experience with low-latency, high-throughput applications (sub-millisecond response times a More ❯

has helped many clients achieve their goals. The 3 G’s of RE: “Get Shit Done.” “Get Over Shit.” “Give a Shit.” We are seeking an experienced and opinionated Java Developer to join our high-performing engineering team, working on l ow latency , high-throughput systems in the payments processing domain. This hybrid role is based in the … UK or US and offers the opportunity to build scalable, real-time services using modern technologies. If you’re passionate about performance, have strong Core Java and SpringBoot expertise, and thrive in a collaborative yet opinionated engineering culture, we want to hear from you. Key Responsibilities : Design, develop, and optimize low-latency, high-throughput backend systems using Core Java … discussions, advocate for best practices, and provide mentorship to peers. Drive performance tuning, fault tolerance, and observability improvements across services. Required Skills & Experience: 5+ years of experience in Core Java development with a focus on performance and memory optimization. Proficient in SpringBoot and microservice-based architecture. Proven experience with low-latency, high-throughput applications (sub-millisecond response times a More ❯

Fidessa Developer - Java/Spring - sought by investment bank based in London - Contract - Hybrid *inside IR35* Key Responsibilities Develop and customise the Fidessa cash equities order management systems for US and Canadian markets. Translate business requirements into technical solutions using Fidessa and Java. Collaborate with global teams to deliver high-quality solutions. Provide mentorship to new team members … line technical issues as needed. Essential Skills & Experience 5+ years of hands-on development experience with the Fidessa trading platform . Strong understanding of equities trading . Proficiency in Java (including Spring framework) and Python . Excellent interpersonal, communication, and organisational skills. Desirable Skills Knowledge of other asset classes in Capital Markets. Experience with tools such as GitHub, Maven More ❯