22 of 22 Java Engineer Jobs in the City of London

Java Engineer London – Hybrid (4 days a week onsite) Up to £65,000 + benefits We’re working with a market-leading trading business that has redefined how technology powers access to alternative assets. With a global presence and an award-winning platform, they combine deep domain expertise with cutting-edge software to deliver a best-in-class … service to their clients. They are looking for a Java Engineer to join their growing engineering team and help build the next generation of their trading platform. This is a unique opportunity to work in a fast-moving, product-focused environment where technology is central to the company’s continued growth and market leadership. Responsibilities as a Java Engineer: Build and enhance core backend services in Java and Spring Boot Contribute to the architecture and development of a new trading platform Deploy and scale applications in a cloud environment (Azure, or other cloud platforms) Work across the stack when needed, including supporting legacy PHP and collaborating on future React-based projects Take ownership of high More ❯

Java Engineer London – Hybrid (4 days a week onsite) Up to £65,000 + benefits We’re working with a market-leading trading business that has redefined how technology powers access to alternative assets. With a global presence and an award-winning platform, they combine deep domain expertise with cutting-edge software to deliver a best-in-class … service to their clients. They are looking for a Java Engineer to join their growing engineering team and help build the next generation of their trading platform. This is a unique opportunity to work in a fast-moving, product-focused environment where technology is central to the company’s continued growth and market leadership. Responsibilities as a Java Engineer: Build and enhance core backend services in Java and Spring Boot Contribute to the architecture and development of a new trading platform Deploy and scale applications in a cloud environment (Azure, or other cloud platforms) Work across the stack when needed, including supporting legacy PHP and collaborating on future React-based projects Take ownership of high More ❯

Java Engineer A fast-growing Fintech innovating at the intersection of finance and blockchain seek a Java Engineer to join their expanding Crypto team to help design and build scalable, high-performance systems powering the next generation of digital assets. The Role As a key member of the Crypto team, you’ll work on mission-critical … technologies. You’ll collaborate closely with engineers and product teams to deliver robust, secure solutions that push the boundaries of fintech innovation. Tech Stack & Skills We Value Strong core Java development skills Spring Framework expertise Experience with Docker & Kubernetes (cloud-native environments) Familiarity with Kafka and event sourcing architectures Passion for clean, scalable, and well-tested code Exposure to … + strong benefits package Work in a fast-paced, innovation-driven environment Opportunity to make a real impact in the crypto and digital asset space If you’re a Java Engineer excited about solving complex problems in fintech and contributing to the future of digital assets, we’d love to hear from you. More ❯

Java Engineer – Greenfield Trading Systems | World-Renowned Bank Join a globally recognized financial institution celebrated for its commitment to innovation and cutting-edge technology. Our client is embarking on an exciting greenfield project to build next-generation trading engines and investment strategy platforms that will shape the future of their trading operations. They are looking for a highly … experienced Java Engineer who brings deep trading systems expertise and thrives on designing modern, scalable architectures. Key Responsibilities: Collaborate with cross-functional teams to build high-performance trading systems from the ground up. Design and implement robust, scalable Java-based services within a containerized environment. Contribute to architectural decisions, ensuring best practices in reliability, latency, and performance. … Bring technical leadership to a highly skilled engineering team in a fast-paced trading environment. Key Skills & Experience: 5+ years of hands-on experience with Java in high-performance environments Strong understanding of trading systems and investment workflows Experience with Kubernetes and container orchestration Familiarity with modern system design, microservices, and CI/CD best practices What’s in More ❯

Java Engineer – Greenfield Trading Systems | World-Renowned Bank Join a globally recognized financial institution celebrated for its commitment to innovation and cutting-edge technology. Our client is embarking on an exciting greenfield project to build next-generation trading engines and investment strategy platforms that will shape the future of their trading operations. They are looking for a highly … experienced Java Engineer who brings deep trading systems expertise and thrives on designing modern, scalable architectures. Key Responsibilities: Collaborate with cross-functional teams to build high-performance trading systems from the ground up. Design and implement robust, scalable Java-based services within a containerized environment. Contribute to architectural decisions, ensuring best practices in reliability, latency, and performance. … Bring technical leadership to a highly skilled engineering team in a fast-paced trading environment. Key Skills & Experience: 5+ years of hands-on experience with Java in high-performance environments Strong understanding of trading systems and investment workflows Experience with Kubernetes and container orchestration Familiarity with modern system design, microservices, and CI/CD best practices What’s in More ❯

Java Software Product Engineer London – 1 day a week onsite 🚀 Join a FinTech Powering the Future of Payments Are you a Java Software Engineer who thrives in a fast-paced, agile environment? Passionate about high-throughput, real-time systems? This is your opportunity to help shape the core technology that powers instant payments for some of … to enable real-time, secure transactions across the globe. 🔍 What You’ll Be Doing You’ll join a high-performing engineering team building asynchronous, event-driven systems using modern Java technologies. Design and build scalable, high-availability systems processing millions of real-time transactions Work with Java 17+, Spring WebFlux, AKKA, Kafka, and more Write clean, testable code … Kanban/Scrum) 🧠 What You Bring We’re looking for engineers who are pragmatic, performance-focused, and thrive on solving complex distributed systems problems. Strong hands-on experience with Java 11+ (ideally Java 17) Solid knowledge of Reactive Programming (e.g., Spring WebFlux, AKKA) Experience with event-driven architecture, real-time messaging systems (Kafka, JMS) Familiarity with asynchronous request More ❯

Java Software Product Engineer London – 1 day a week onsite 🚀 Join a FinTech Powering the Future of Payments Are you a Java Software Engineer who thrives in a fast-paced, agile environment? Passionate about high-throughput, real-time systems? This is your opportunity to help shape the core technology that powers instant payments for some of … to enable real-time, secure transactions across the globe. 🔍 What You’ll Be Doing You’ll join a high-performing engineering team building asynchronous, event-driven systems using modern Java technologies. Design and build scalable, high-availability systems processing millions of real-time transactions Work with Java 17+, Spring WebFlux, AKKA, Kafka, and more Write clean, testable code … Kanban/Scrum) 🧠 What You Bring We’re looking for engineers who are pragmatic, performance-focused, and thrive on solving complex distributed systems problems. Strong hands-on experience with Java 11+ (ideally Java 17) Solid knowledge of Reactive Programming (e.g., Spring WebFlux, AKKA) Experience with event-driven architecture, real-time messaging systems (Kafka, JMS) Familiarity with asynchronous request More ❯

Senior Software Engineer – Backend (Java) 📅 6-Month Contract | 🏢 Hybrid (2 Days in Office) | 💷 £600 p/d inside ir35 We’re looking for a skilled Backend Java Engineer to join an innovative team on a 6-month contract. If you love solving complex problems, mentoring others, and working on cutting-edge data platforms at scale- this … one’s for you! 🙌 🌟 What you’ll do: 💻 Develop and maintain scalable, data-driven applications in Java 🛠️ Lead on requirements, design workshops, and solutioning 🤝 Mentor junior engineers and share best practices ☁️ Implement & optimise microservices and distributed systems on GCP (GKE, PubSub, BigQuery, Dataflow) using Docker & Kubernetes 🔄 Build and manage efficient data pipelines with streaming tech + relational/NoSQL … integration, and non-functional testing ⚡ Contribute to CI/CD practices with Jenkins and Git 🕵️ Troubleshoot, propose improvements, and stay ahead of emerging technologies 💡 What you’ll bring: 🔑 Strong Java & OOP experience 📊 Background in data platforms, frameworks & streaming technologies 🧩 Familiarity with microservices & distributed systems ☁️ Exposure to GCP (GKE, PubSub, BigQuery) 🗄️ Experience with relational/NoSQL databases 🐳 Proficiency with Docker More ❯

Senior Software Engineer – Backend (Java) 📅 6-Month Contract | 🏢 Hybrid (2 Days in Office) | 💷 £600 p/d inside ir35 We’re looking for a skilled Backend Java Engineer to join an innovative team on a 6-month contract. If you love solving complex problems, mentoring others, and working on cutting-edge data platforms at scale- this … one’s for you! 🙌 🌟 What you’ll do: 💻 Develop and maintain scalable, data-driven applications in Java 🛠️ Lead on requirements, design workshops, and solutioning 🤝 Mentor junior engineers and share best practices ☁️ Implement & optimise microservices and distributed systems on GCP (GKE, PubSub, BigQuery, Dataflow) using Docker & Kubernetes 🔄 Build and manage efficient data pipelines with streaming tech + relational/NoSQL … integration, and non-functional testing ⚡ Contribute to CI/CD practices with Jenkins and Git 🕵️ Troubleshoot, propose improvements, and stay ahead of emerging technologies 💡 What you’ll bring: 🔑 Strong Java & OOP experience 📊 Background in data platforms, frameworks & streaming technologies 🧩 Familiarity with microservices & distributed systems ☁️ Exposure to GCP (GKE, PubSub, BigQuery) 🗄️ Experience with relational/NoSQL databases 🐳 Proficiency with Docker More ❯

Senior Java Developer - Java, Springboot & AWS – paying up to £600/day (Inside IR35) – Hybrid (2x a week - London) – 6 month contract Our client is seeking a Senior Java Developer who is passionate about clean code, cloud-native systems, and building technology that makes a real impact. This is a unique opportunity to work in an agile … high-ownership engineering culture. What You'll Be Doing: Build and scale backend services using Java and Spring Boot Shape a modern microservices architecture for a high-availability platform Deploy and manage services in AWS with Kubernetes (EKS) Design, implement, and own features end-to-end from discovery to production support Advocate for clean code, automated testing, and CI … with cross-functional teams including product, design, and infrastructure Troubleshoot complex issues and help ensure system reliability and performance What You’ll Bring: Strong backend engineering experience, especially in Java and Spring Deep understanding of distributed systems and microservices Hands-on experience with AWS , Kubernetes , Docker , and Terraform Familiarity with CI/CD pipelines and testing best practices Solid More ❯

Senior Java Developer - Java, Springboot & AWS – paying up to £600/day (Inside IR35) – Hybrid (2x a week - London) – 6 month contract Our client is seeking a Senior Java Developer who is passionate about clean code, cloud-native systems, and building technology that makes a real impact. This is a unique opportunity to work in an agile … high-ownership engineering culture. What You'll Be Doing: Build and scale backend services using Java and Spring Boot Shape a modern microservices architecture for a high-availability platform Deploy and manage services in AWS with Kubernetes (EKS) Design, implement, and own features end-to-end from discovery to production support Advocate for clean code, automated testing, and CI … with cross-functional teams including product, design, and infrastructure Troubleshoot complex issues and help ensure system reliability and performance What You’ll Bring: Strong backend engineering experience, especially in Java and Spring Deep understanding of distributed systems and microservices Hands-on experience with AWS , Kubernetes , Docker , and Terraform Familiarity with CI/CD pipelines and testing best practices Solid More ❯

A leading global investment bank is seeking a Java Developer/eTrading Strategist to join its London Rates eTrading team . This front-office role focuses on designing, building, and optimising low-latency Java trading systems that power the bank's global Rates business. The Role You will engineer high-performance Java components for algorithmic execution … with traders, quants, and technologists, you'll deliver production-ready eTrading solutions with a focus on latency, scalability, and resilience . Key Responsibilities Design and implement low-latency, multithreaded Java applications for Rates eTrading. Develop and optimise execution algorithms, smart order routers, and pricing engines . Profile and tune Java applications for GC optimisation, lock contention, and throughput … . Implement real-time monitoring, logging, and alerting frameworks . Partner with quants to integrate pricing models into Java-based trading systems . Conduct rigorous code reviews, testing, and benchmarking . Candidate Profile Degree in Computer Science, Engineering, Mathematics , or related field. 10+ years' experience in Java development within low-latency trading systems . Deep knowledge of Java More ❯

Join a Tier 1 Investment bank in their leading global FX trading platform as a Java Engineer, contributing to the backbone of ultra-low latency systems powering high-volume electronic trading. This role focuses on building high-performance, globally distributed Java services that enable real-time transaction processing, configuration management, and support for quantitative research and trading … to deliver platform enhancements Drive performance tuning and solve low-level technical bottlenecks Maintain high standards in testing, documentation, and code quality Tech Stack & Skills: Strong proficiency in core Java Exposure to JavaScript/TypeScript & HTML5 is a plus Deep understanding of data structures, algorithms, and performance optimization Familiar with modern SDLC tools and CI/CD workflows Competitive More ❯

Join a Tier 1 Investment bank in their leading global FX trading platform as a Java Engineer, contributing to the backbone of ultra-low latency systems powering high-volume electronic trading. This role focuses on building high-performance, globally distributed Java services that enable real-time transaction processing, configuration management, and support for quantitative research and trading … to deliver platform enhancements Drive performance tuning and solve low-level technical bottlenecks Maintain high standards in testing, documentation, and code quality Tech Stack & Skills: Strong proficiency in core Java Exposure to JavaScript/TypeScript & HTML5 is a plus Deep understanding of data structures, algorithms, and performance optimization Familiar with modern SDLC tools and CI/CD workflows Competitive More ❯

Trading System Engineer – Shape the Future of Trading Leading European Private Bank Ready to make a real impact on a cutting-edge trading platform? A leading European private bank is seeking a highly skilled Trading System Engineer/Architect to spearhead the transformation of their equity trading technology. This is a unique opportunity to contribute to a multi … Execution Platform. Guarantee the system's high availability for global equity market trading. Craft bespoke trading workflows tailored to the specific needs of demanding clients across multiple trading desks. Engineer and optimize systems for dynamic scalability, ensuring responsiveness to market fluctuations and events. Collaborate closely with other IB Engineering teams and project stakeholders. What You Bring: A minimum of … five years of experience in software engineering, with a focus on modern software design, architectural patterns, and performance optimization (throughput, latency, capacity). Expert-level proficiency in Java, particularly in the development of high-performance, low-latency, and microservice-based real-time trading applications. Deep understanding of trading systems, including integration with reference and market data systems, ideally within More ❯

Trading System Engineer – Shape the Future of Trading Leading European Private Bank Ready to make a real impact on a cutting-edge trading platform? A leading European private bank is seeking a highly skilled Trading System Engineer/Architect to spearhead the transformation of their equity trading technology. This is a unique opportunity to contribute to a multi … Execution Platform. Guarantee the system's high availability for global equity market trading. Craft bespoke trading workflows tailored to the specific needs of demanding clients across multiple trading desks. Engineer and optimize systems for dynamic scalability, ensuring responsiveness to market fluctuations and events. Collaborate closely with other IB Engineering teams and project stakeholders. What You Bring: A minimum of … five years of experience in software engineering, with a focus on modern software design, architectural patterns, and performance optimization (throughput, latency, capacity). Expert-level proficiency in Java, particularly in the development of high-performance, low-latency, and microservice-based real-time trading applications. Deep understanding of trading systems, including integration with reference and market data systems, ideally within More ❯

Key Responsibilities: • Demonstrates significant working knowledge of Java and related technologies and advises on design, development, and implementation. • Leads by example, promoting an open and inclusive culture, holding responsibility for motivation, retention and performance management. • Leads the delivery of critical projects, coaching team members to be productive with little direction; delegating and reviewing work when required. • Leads timely design … work with stakeholders across the business to progress and achieve the relevant goals to ensure development, deployment & delivery is successful. Mandatory Technical Skills: • 5 or more years programming in Java • Spring inc. Spring Boot, Spring JDBC, Spring Data, Hibernate/JPA, building REST services • Understanding of REST API design • Experience of deploying and maintaining applications in the cloud (Azure More ❯

Key Responsibilities: • Demonstrates significant working knowledge of Java and related technologies and advises on design, development, and implementation. • Leads by example, promoting an open and inclusive culture, holding responsibility for motivation, retention and performance management. • Leads the delivery of critical projects, coaching team members to be productive with little direction; delegating and reviewing work when required. • Leads timely design … work with stakeholders across the business to progress and achieve the relevant goals to ensure development, deployment & delivery is successful. Mandatory Technical Skills: • 5 or more years programming in Java • Spring inc. Spring Boot, Spring JDBC, Spring Data, Hibernate/JPA, building REST services • Understanding of REST API design • Experience of deploying and maintaining applications in the cloud (Azure More ❯

APAC, US and Canada. We have an excellent job opportunity for you. Role Title: Software Developer Location: Manchester, Cheltenham or London Clearance required: eDV Duration: 5+ months Role Description: • Java development • Object store configuration and containerisation • Docker, Kubernetes • Back-end software development using Python and Java • Relational databases and SQL • Experience integrating 3rd party software, scripting/glue More ❯

APAC, US and Canada. We have an excellent job opportunity for you. Role Title: Software Developer Location: Manchester, Cheltenham or London Clearance required: eDV Duration: 5+ months Role Description: • Java development • Object store configuration and containerisation • Docker, Kubernetes • Back-end software development using Python and Java • Relational databases and SQL • Experience integrating 3rd party software, scripting/glue More ❯

Are you an experienced, data-driven engineer with an ambition to work on a technology rebuild within a global alternative Asset Manager? You will be joining a lean team of high-performing engineers working on a business-critical project with a focus on bringing a new perspective into the way in which the pre and post-trade systems are … built across the business. As a senior engineer with expertise across Java and Kafka, you will be acting as an SME to develop distributed, event-driven architecture with a valuable input into all things data-systems. You'll have real ownership here, contributing heavily into design discussion with a focus on performance and throughput. This is initially a More ❯

Are you an experienced, data-driven engineer with an ambition to work on a technology rebuild within a global alternative Asset Manager? You will be joining a lean team of high-performing engineers working on a business-critical project with a focus on bringing a new perspective into the way in which the pre and post-trade systems are … built across the business. As a senior engineer with expertise across Java and Kafka, you will be acting as an SME to develop distributed, event-driven architecture with a valuable input into all things data-systems. You'll have real ownership here, contributing heavily into design discussion with a focus on performance and throughput. This is initially a More ❯