126 to 150 of 213 Java Software Engineer Jobs in the UK

Java Developer – upto £140k plus shares Java21, Springboot, Microservices, TDD, AWS A well-funded, product-led tech startup is building a next-generation financial platform designed to serve millions across emerging markets. Their mission is to simplify access to stable, secure digital finance, enabling users to save, transact, and grow their money with confidence. We’re looking for x8 … Java Developers to join their core engineering team. You’ll help design and build backend systems that power real-time financial operations, from transaction processing to user authentication and fund management. The work is greenfield, the architecture is modular, and the impact is tangible. You’ll be working with a modern stack, contributing to a microservices ecosystem, and collaborating … across disciplines to deliver secure, scalable solutions. The ideal Java Developer will bring deep experience in Java (17+), a strong grasp of distributed systems, and a passion for building infrastructure that performs under pressure. Tech stack includes: Java 21, Springboot, Microservices, TDD, AWS, React. This is a mostly remote role with one day a week in office More ❯

Java Developer - Financial Technology - London/Hybrid (INSIDE IR35) (Key skills: Java, Spring Boot, Kubernetes, AWS EKS, Amazon Redshift, PostgreSQL, RESTful APIs, CI/CD, Microservices, iOS/Android Native, Agile, Financial Services) Are you a highly skilled Java Developer with a passion for building scalable, high-performance financial systems? Do you enjoy working with cutting-edge … is a fantastic opportunity to join a growing FinTech organisation at the heart of digital transformation in financial services. Our client, an international financial technology company , is seeking a Java Developer to play a key role in designing, developing, and deploying next-generation financial applications. You will work on complex, high-availability systems built using Spring Boot , deployed on … with iOS and Android engineers to ensure seamless end-to-end integration, supporting mobile-first financial products that reach thousands of users daily. To succeed, you'll need strong Java and Spring Boot experience, solid understanding of Kubernetes and AWS services, and hands-on database development with SQL-based systems. Familiarity with mobile integrations (iOS/Android native), RESTful 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 ❯

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 ❯

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 ❯

Java Developer Active SC Clearance Inside IR35 Hybrid Working What you’ll be doing You've will need to have already mastered Java, Spring Boot, and AWS. You need to be comfortable working in a large team on a microservices codebase, built scalable APIs, optimized SQL queries, and containerized everything from dev to prod. You need excellent communications … be outcomes driven and be able to proactively identify and solve these problems to achieve that outcome. Responsibilities Your responsibilities include: Design, develop, and deploy robust backend services using Java and Spring Boot Build scalable APIs Analyse schemas and write optimised SQL queries against large data sets Collaborate with DevOps on containerization and cloud deployment (Docker, AWS) Contribute to … and technical roadmaps Write clean, maintainable, and well-tested code Perform code reviews and mentor junior engineers Essential skills We’re looking for the following key skills from applicants: Java (8/11/17+) – Expert-level programming and deep understanding of the language and its core libraries Spring Boot – Expert in building RESTful APIs and microservices using Spring 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 ❯

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 ❯

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 ❯

or just beginning your career, working at BGC partners provides opportunities to develop skills, make an impact and grow at an accelerated pace. Role Summary – Senior Middle Office Backend Software Engineer GBX is BGC’s flagship platform for electronic trading solutions in the Credit and Rates markets. Used by thousands of brokers and traders daily, GBX is a … growth targets. Areas of focus include system reliability, testability, recoverability, automation, throughput and latency. Our engineers are analytical thinkers and have a strong understanding of computer science fundamentals and software engineering. You will be exposed to multiple financial markets and market structures, have the opportunity work on scaling a real-time system with a global footprint, applying modern software … of senior and intermediate engineers Promote a culture of strong collaboration, share best practice, propose improvement Point of contact with stakeholders and the NY team 8+ years of professional java experience Strong knowledge of data structures and algorithms SQL experience Knowledge of at least one scripting language (shell, python, perl etc.) Knowledge of network programming fundamentals Bachelors degree in More ❯

or just beginning your career, working at BGC partners provides opportunities to develop skills, make an impact and grow at an accelerated pace. Role Summary – Senior Middle Office Backend Software Engineer GBX is BGC’s flagship platform for electronic trading solutions in the Credit and Rates markets. Used by thousands of brokers and traders daily, GBX is a … growth targets. Areas of focus include system reliability, testability, recoverability, automation, throughput and latency. Our engineers are analytical thinkers and have a strong understanding of computer science fundamentals and software engineering. You will be exposed to multiple financial markets and market structures, have the opportunity work on scaling a real-time system with a global footprint, applying modern software … of senior and intermediate engineers Promote a culture of strong collaboration, share best practice, propose improvement Point of contact with stakeholders and the NY team 8+ years of professional java experience Strong knowledge of data structures and algorithms SQL experience Knowledge of at least one scripting language (shell, python, perl etc.) Knowledge of network programming fundamentals Bachelors degree in More ❯

or just beginning your career, working at BGC partners provides opportunities to develop skills, make an impact and grow at an accelerated pace. Role Summary – Senior Middle Office Backend Software Engineer GBX is BGC’s flagship platform for electronic trading solutions in the Credit and Rates markets. Used by thousands of brokers and traders daily, GBX is a … growth targets. Areas of focus include system reliability, testability, recoverability, automation, throughput and latency. Our engineers are analytical thinkers and have a strong understanding of computer science fundamentals and software engineering. You will be exposed to multiple financial markets and market structures, have the opportunity work on scaling a real-time system with a global footprint, applying modern software … of senior and intermediate engineers Promote a culture of strong collaboration, share best practice, propose improvement Point of contact with stakeholders and the NY team 8+ years of professional java experience Strong knowledge of data structures and algorithms SQL experience Knowledge of at least one scripting language (shell, python, perl etc.) Knowledge of network programming fundamentals Bachelors degree in More ❯

Our client are a high frequency trading firm based in London. They're looking for a back-end Java engineer who will contribute to both sides of the stack. This isn't a typical full-stack role, your time isn't split between backend and frontend work. They have a frontend team in place. You will not be … designing UI. Instead, you will build high-performance Java services that power the trading UI. So yes you need frontend awareness, but your focus is on backend engineering that makes the UI fast and reliable. What you will do: Design and build Java services that feed real-time data to the frontend. Work with the UI team on … back-pressure, and error handling. Improve end-to-end latency by looking across the stack. What you'll bring: Strong knowledge of computer science fundamentals (data structures, algorithms). Java engineering experience in trading, betting, gaming, or streaming. Hands-on work with real-time or data-heavy systems. Comfortable across server and browser. Not essential (but nice-to-have More ❯

Java Developer – High-Performance Trading Systems - Fully Remote - up to £100k base About the Company We’re a fast-growing proprietary trading firm operating across multiple global cryptocurrency exchanges. Founded by a team with deep experience in financial markets and algorithmic trading, we’ve already achieved top-tier market-maker status, handling trading volumes exceeding $100M per month — all … within our first six months of operation. About the Role We’re looking for a talented Java Developer to join our small, high-performing engineering team. You’ll play a key role in expanding our trading infrastructure, integrating new exchanges, and building scalable, low-latency systems that power our trading strategies. This is an opportunity to work on cutting … edge systems in a start-up environment where your work has a direct and measurable impact. Key Responsibilities Develop and maintain high-performance backend services in Java Deploy code to production frequently in a fast-paced, agile environment Build scalable, event-driven systems handling large volumes of real-time data Take ownership of your code — from design through deployment More ❯

New Java role - Fully remote (UK) - Trading/Crypto We have a new Java role for a proprietary trading firm aiming to become part of one of the world’s leading Institutional Market-Makers across Cryptocurrency Exchanges. The founding team have a background in financial markets and sports data. They are seeking roughly 2+ years experience with Java … to build the trading volume. From there you will have the opportunity to push the company forward, having input in the ongoing development. Key Responsibilities Develop backend services using Java Deploy code to production daily Ensure quality of codebase is maintained and improved and follow best development practices Write it, own it - You will be responsible for maintaining the … software you write Qualifications, Skills & Experience Degree in STEM subject or equivalent software development experience 2+ years Java programming experience Experience with message passing technologies, in particular Aeron, SBE. Familiar with event driven design patterns and micro service architecture You’ve worked on large scale, distributed systems that operate with large volumes of data. An advocate of More ❯

Java Developer – Derivatives A leading financial trade association is seeking a Java Developer to support industry adoption of a global data and digital standards framework used across derivatives markets. Key Responsibilities Contribute to the development and implementation of open-source data models for derivatives trade processing and regulatory reporting. Write clean, efficient Java and Python code and … JSON, DSL ). Engage with member firms and vendors to capture requirements, extend models, and test new functionality. Document code, manage sprints, and contribute to roadmap planning. Requirements Strong software-engineering background with hands-on Java/Python development experience. Knowledge of derivatives trade lifecycle , collateral management, and/or regulatory reporting. Skilled in data modelling and working More ❯

Java Developer – Derivatives A leading financial trade association is seeking a Java Developer to support industry adoption of a global data and digital standards framework used across derivatives markets. Key Responsibilities Contribute to the development and implementation of open-source data models for derivatives trade processing and regulatory reporting. Write clean, efficient Java and Python code and … JSON, DSL ). Engage with member firms and vendors to capture requirements, extend models, and test new functionality. Document code, manage sprints, and contribute to roadmap planning. Requirements Strong software-engineering background with hands-on Java/Python development experience. Knowledge of derivatives trade lifecycle , collateral management, and/or regulatory reporting. Skilled in data modelling and working More ❯

Java Developer – Derivatives A leading financial trade association is seeking a Java Developer to support industry adoption of a global data and digital standards framework used across derivatives markets. Key Responsibilities Contribute to the development and implementation of open-source data models for derivatives trade processing and regulatory reporting. Write clean, efficient Java and Python code and … JSON, DSL ). Engage with member firms and vendors to capture requirements, extend models, and test new functionality. Document code, manage sprints, and contribute to roadmap planning. Requirements Strong software-engineering background with hands-on Java/Python development experience. Knowledge of derivatives trade lifecycle , collateral management, and/or regulatory reporting. Skilled in data modelling and working More ❯

Java Developer – Derivatives A leading financial trade association is seeking a Java Developer to support industry adoption of a global data and digital standards framework used across derivatives markets. Key Responsibilities Contribute to the development and implementation of open-source data models for derivatives trade processing and regulatory reporting. Write clean, efficient Java and Python code and … JSON, DSL ). Engage with member firms and vendors to capture requirements, extend models, and test new functionality. Document code, manage sprints, and contribute to roadmap planning. Requirements Strong software-engineering background with hands-on Java/Python development experience. Knowledge of derivatives trade lifecycle , collateral management, and/or regulatory reporting. Skilled in data modelling and working More ❯

Java Developer – Derivatives A leading financial trade association is seeking a Java Developer to support industry adoption of a global data and digital standards framework used across derivatives markets. Key Responsibilities Contribute to the development and implementation of open-source data models for derivatives trade processing and regulatory reporting. Write clean, efficient Java and Python code and … JSON, DSL ). Engage with member firms and vendors to capture requirements, extend models, and test new functionality. Document code, manage sprints, and contribute to roadmap planning. Requirements Strong software-engineering background with hands-on Java/Python development experience. Knowledge of derivatives trade lifecycle , collateral management, and/or regulatory reporting. Skilled in data modelling and working More ❯

to technical innovations within the banking world being one of the first to transform customer experience. The What.. The organisation are looking to bring in a number of Senior Java Engineers with specific skills within the financial services arena & ideally payments to build this greenfield payments platform. You would have strong end to end software engineering skills, specialised … in middleware & back-end technology - a strategic thinker and digital innovator with a risk/control mindset. Tech wise what you would be using: Advanced Java skills (Java 17) Spring Boot REST API & Messaging Queue experience (Kafka/Kubernetes etc) Strong database skills Any front-end skills would be preferable (ReactJS) Any cloud experience would be preferable (AWS More ❯