26 to 50 of 66 Senior Java Software Engineer Jobs in England

Senior Java Developer – Middle Office Platform (Credit & Rates Trading) Location: London Salary: £120K-£140K + up to 25% Bonus + benefits About the Company This global financial technology firm is renowned for combining cutting-edge engineering with a market-leading trading platform that powers electronic trading across Credit and Rates. Their flagship product is used daily … fast-paced, product-focused culture where engineers have direct impact on scaling systems that sit at the heart of global capital markets. The Role We are seeking a Senior Backend Java Engineer to play a key role in scaling the Middle Office platform of a world-leading electronic trading system. You’ll work on … volume, real-time environment. This is a hands-on leadership role where you’ll mentor other engineers, promote engineering excellence, and act as a point of contact for senior stakeholders. Projects You’ll Work On Scaling a real-time trading platform: Handle vast growth in electronic trading volumes, ensuring throughput and ultra-low latency. Resilience & recoverability: Build fault More ❯

Senior Java Developer – Middle Office Platform (Credit & Rates Trading) Location: London Salary: £120K-£140K + up to 25% Bonus + benefits About the Company This global financial technology firm is renowned for combining cutting-edge engineering with a market-leading trading platform that powers electronic trading across Credit and Rates. Their flagship product is used daily … fast-paced, product-focused culture where engineers have direct impact on scaling systems that sit at the heart of global capital markets. The Role We are seeking a Senior Backend Java Engineer to play a key role in scaling the Middle Office platform of a world-leading electronic trading system. You’ll work on … volume, real-time environment. This is a hands-on leadership role where you’ll mentor other engineers, promote engineering excellence, and act as a point of contact for senior stakeholders. Projects You’ll Work On Scaling a real-time trading platform: Handle vast growth in electronic trading volumes, ensuring throughput and ultra-low latency. Resilience & recoverability: Build fault More ❯

Senior Java Developer – Middle Office Platform (Credit & Rates Trading) Location: London Salary: £120K-£140K + up to 25% Bonus + benefits About the Company This global financial technology firm is renowned for combining cutting-edge engineering with a market-leading trading platform that powers electronic trading across Credit and Rates. Their flagship product is used daily … fast-paced, product-focused culture where engineers have direct impact on scaling systems that sit at the heart of global capital markets. The Role We are seeking a Senior Backend Java Engineer to play a key role in scaling the Middle Office platform of a world-leading electronic trading system. You’ll work on … volume, real-time environment. This is a hands-on leadership role where you’ll mentor other engineers, promote engineering excellence, and act as a point of contact for senior stakeholders. Projects You’ll Work On Scaling a real-time trading platform: Handle vast growth in electronic trading volumes, ensuring throughput and ultra-low latency. Resilience & recoverability: Build fault More ❯

Senior Java Developer – Middle Office Platform (Credit & Rates Trading) Location: London Salary: £120K-£140K + up to 25% Bonus + benefits About the Company This global financial technology firm is renowned for combining cutting-edge engineering with a market-leading trading platform that powers electronic trading across Credit and Rates. Their flagship product is used daily … fast-paced, product-focused culture where engineers have direct impact on scaling systems that sit at the heart of global capital markets. The Role We are seeking a Senior Backend Java Engineer to play a key role in scaling the Middle Office platform of a world-leading electronic trading system. You’ll work on … volume, real-time environment. This is a hands-on leadership role where you’ll mentor other engineers, promote engineering excellence, and act as a point of contact for senior stakeholders. Projects You’ll Work On Scaling a real-time trading platform: Handle vast growth in electronic trading volumes, ensuring throughput and ultra-low latency. Resilience & recoverability: Build fault More ❯

of the world's most dynamic markets. Trusted by regulators and institutions worldwide, their systems monitor over a trillion events every single day. They are now seeking a Senior Software Engineer to join the Algos Team. In this role, you'll design and develop advanced algorithms that detect and prevent market abuse, fraud, and … of scalable, low-latency systems Collaborate with quants, data scientists, and compliance experts Enhance and maintain a mission-critical global codebase What they're looking for 5+ years' software engineering experience (3+ in financial markets/algos) Strong coding skills in Java, Kotlin, C#, or C++ (Python a plus) Hands-on experience with real-time data … processing & distributed systems Strong understanding of software engineering and system architecture A proactive problem-solver with excellent collaboration skills Why Join? Fully remote role with global collaboration Work at the intersection of finance and crypto innovation Be part of a mission-driven company protecting millions of investors Ready to help build safer, fairer financial and crypto markets? Apply More ❯

of the world's most dynamic markets. Trusted by regulators and institutions worldwide, their systems monitor over a trillion events every single day. They are now seeking a Senior Software Engineer to join the Algos Team. In this role, you'll design and develop advanced algorithms that detect and prevent market abuse, fraud, and … of scalable, low-latency systems Collaborate with quants, data scientists, and compliance experts Enhance and maintain a mission-critical global codebase What they're looking for 5+ years' software engineering experience (3+ in financial markets/algos) Strong coding skills in Java, Kotlin, C#, or C++ (Python a plus) Hands-on experience with real-time data … processing & distributed systems Strong understanding of software engineering and system architecture A proactive problem-solver with excellent collaboration skills Why Join? Fully remote role with global collaboration Work at the intersection of finance and crypto innovation Be part of a mission-driven company protecting millions of investors Ready to help build safer, fairer financial and crypto markets? Apply More ❯

of the world's most dynamic markets. Trusted by regulators and institutions worldwide, their systems monitor over a trillion events every single day. They are now seeking a Senior Software Engineer to join the Algos Team. In this role, you'll design and develop advanced algorithms that detect and prevent market abuse, fraud, and … of scalable, low-latency systems Collaborate with quants, data scientists, and compliance experts Enhance and maintain a mission-critical global codebase 🔹 What they're looking for 5+ years' software engineering experience (3+ in financial markets/algos) Strong coding skills in Java, Kotlin, C#, or C++ (Python a plus) Hands-on experience with real-time data … processing & distributed systems Strong understanding of software engineering and system architecture A proactive problem-solver with excellent collaboration skills 🌍 Why Join? Fully remote role with global collaboration Work at the intersection of finance and crypto innovation Be part of a mission-driven company protecting millions of investors 👉 Ready to help build safer, fairer financial and crypto markets? Apply More ❯

of the world's most dynamic markets. Trusted by regulators and institutions worldwide, their systems monitor over a trillion events every single day. They are now seeking a Senior Software Engineer to join the Algos Team. In this role, you'll design and develop advanced algorithms that detect and prevent market abuse, fraud, and … of scalable, low-latency systems Collaborate with quants, data scientists, and compliance experts Enhance and maintain a mission-critical global codebase 🔹 What they're looking for 5+ years' software engineering experience (3+ in financial markets/algos) Strong coding skills in Java, Kotlin, C#, or C++ (Python a plus) Hands-on experience with real-time data … processing & distributed systems Strong understanding of software engineering and system architecture A proactive problem-solver with excellent collaboration skills 🌍 Why Join? Fully remote role with global collaboration Work at the intersection of finance and crypto innovation Be part of a mission-driven company protecting millions of investors 👉 Ready to help build safer, fairer financial and crypto markets? Apply More ❯

of the world's most dynamic markets. Trusted by regulators and institutions worldwide, their systems monitor over a trillion events every single day. They are now seeking a Senior Software Engineer to join the Algos Team. In this role, you'll design and develop advanced algorithms that detect and prevent market abuse, fraud, and … of scalable, low-latency systems Collaborate with quants, data scientists, and compliance experts Enhance and maintain a mission-critical global codebase 🔹 What they're looking for 5+ years' software engineering experience (3+ in financial markets/algos) Strong coding skills in Java, Kotlin, C#, or C++ (Python a plus) Hands-on experience with real-time data … processing & distributed systems Strong understanding of software engineering and system architecture A proactive problem-solver with excellent collaboration skills 🌍 Why Join? Fully remote role with global collaboration Work at the intersection of finance and crypto innovation Be part of a mission-driven company protecting millions of investors 👉 Ready to help build safer, fairer financial and crypto markets? Apply More ❯

of the world's most dynamic markets. Trusted by regulators and institutions worldwide, their systems monitor over a trillion events every single day. They are now seeking a Senior Software Engineer to join the Algos Team. In this role, you'll design and develop advanced algorithms that detect and prevent market abuse, fraud, and … of scalable, low-latency systems Collaborate with quants, data scientists, and compliance experts Enhance and maintain a mission-critical global codebase 🔹 What they're looking for 5+ years' software engineering experience (3+ in financial markets/algos) Strong coding skills in Java, Kotlin, C#, or C++ (Python a plus) Hands-on experience with real-time data … processing & distributed systems Strong understanding of software engineering and system architecture A proactive problem-solver with excellent collaboration skills 🌍 Why Join? Fully remote role with global collaboration Work at the intersection of finance and crypto innovation Be part of a mission-driven company protecting millions of investors 👉 Ready to help build safer, fairer financial and crypto markets? Apply More ❯

of the world's most dynamic markets. Trusted by regulators and institutions worldwide, their systems monitor over a trillion events every single day. They are now seeking a Senior Software Engineer to join the Algos Team. In this role, you'll design and develop advanced algorithms that detect and prevent market abuse, fraud, and … of scalable, low-latency systems Collaborate with quants, data scientists, and compliance experts Enhance and maintain a mission-critical global codebase 🔹 What they're looking for 5+ years' software engineering experience (3+ in financial markets/algos) Strong coding skills in Java, Kotlin, C#, or C++ (Python a plus) Hands-on experience with real-time data … processing & distributed systems Strong understanding of software engineering and system architecture A proactive problem-solver with excellent collaboration skills 🌍 Why Join? Fully remote role with global collaboration Work at the intersection of finance and crypto innovation Be part of a mission-driven company protecting millions of investors 👉 Ready to help build safer, fairer financial and crypto markets? Apply More ❯

of the world's most dynamic markets. Trusted by regulators and institutions worldwide, their systems monitor over a trillion events every single day. They are now seeking a Senior Software Engineer to join the Algos Team. In this role, you'll design and develop advanced algorithms that detect and prevent market abuse, fraud, and … of scalable, low-latency systems Collaborate with quants, data scientists, and compliance experts Enhance and maintain a mission-critical global codebase 🔹 What they're looking for 5+ years' software engineering experience (3+ in financial markets/algos) Strong coding skills in Java, Kotlin, C#, or C++ (Python a plus) Hands-on experience with real-time data … processing & distributed systems Strong understanding of software engineering and system architecture A proactive problem-solver with excellent collaboration skills 🌍 Why Join? Fully remote role with global collaboration Work at the intersection of finance and crypto innovation Be part of a mission-driven company protecting millions of investors 👉 Ready to help build safer, fairer financial and crypto markets? Apply More ❯

of the world's most dynamic markets. Trusted by regulators and institutions worldwide, their systems monitor over a trillion events every single day. They are now seeking a Senior Software Engineer to join the Algos Team. In this role, you'll design and develop advanced algorithms that detect and prevent market abuse, fraud, and … of scalable, low-latency systems Collaborate with quants, data scientists, and compliance experts Enhance and maintain a mission-critical global codebase 🔹 What they're looking for 5+ years' software engineering experience (3+ in financial markets/algos) Strong coding skills in Java, Kotlin, C#, or C++ (Python a plus) Hands-on experience with real-time data … processing & distributed systems Strong understanding of software engineering and system architecture A proactive problem-solver with excellent collaboration skills 🌍 Why Join? Fully remote role with global collaboration Work at the intersection of finance and crypto innovation Be part of a mission-driven company protecting millions of investors 👉 Ready to help build safer, fairer financial and crypto markets? Apply More ❯

of the world's most dynamic markets. Trusted by regulators and institutions worldwide, their systems monitor over a trillion events every single day. They are now seeking a Senior Software Engineer to join the Algos Team. In this role, you'll design and develop advanced algorithms that detect and prevent market abuse, fraud, and … of scalable, low-latency systems Collaborate with quants, data scientists, and compliance experts Enhance and maintain a mission-critical global codebase 🔹 What they're looking for 5+ years' software engineering experience (3+ in financial markets/algos) Strong coding skills in Java, Kotlin, C#, or C++ (Python a plus) Hands-on experience with real-time data … processing & distributed systems Strong understanding of software engineering and system architecture A proactive problem-solver with excellent collaboration skills 🌍 Why Join? Fully remote role with global collaboration Work at the intersection of finance and crypto innovation Be part of a mission-driven company protecting millions of investors 👉 Ready to help build safer, fairer financial and crypto markets? Apply More ❯

of the world's most dynamic markets. Trusted by regulators and institutions worldwide, their systems monitor over a trillion events every single day. They are now seeking a Senior Software Engineer to join the Algos Team. In this role, you'll design and develop advanced algorithms that detect and prevent market abuse, fraud, and … of scalable, low-latency systems Collaborate with quants, data scientists, and compliance experts Enhance and maintain a mission-critical global codebase 🔹 What they're looking for 5+ years' software engineering experience (3+ in financial markets/algos) Strong coding skills in Java, Kotlin, C#, or C++ (Python a plus) Hands-on experience with real-time data … processing & distributed systems Strong understanding of software engineering and system architecture A proactive problem-solver with excellent collaboration skills 🌍 Why Join? Fully remote role with global collaboration Work at the intersection of finance and crypto innovation Be part of a mission-driven company protecting millions of investors 👉 Ready to help build safer, fairer financial and crypto markets? Apply More ❯

of the world's most dynamic markets. Trusted by regulators and institutions worldwide, their systems monitor over a trillion events every single day. They are now seeking a Senior Software Engineer to join the Algos Team. In this role, you'll design and develop advanced algorithms that detect and prevent market abuse, fraud, and … of scalable, low-latency systems Collaborate with quants, data scientists, and compliance experts Enhance and maintain a mission-critical global codebase 🔹 What they're looking for 5+ years' software engineering experience (3+ in financial markets/algos) Strong coding skills in Java, Kotlin, C#, or C++ (Python a plus) Hands-on experience with real-time data … processing & distributed systems Strong understanding of software engineering and system architecture A proactive problem-solver with excellent collaboration skills 🌍 Why Join? Fully remote role with global collaboration Work at the intersection of finance and crypto innovation Be part of a mission-driven company protecting millions of investors 👉 Ready to help build safer, fairer financial and crypto markets? Apply 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 including AI, 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, performative, and reliable Java applications. Guide and mentor developers such as graduates and juniors 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 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 including AI, 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, performative, and reliable Java applications. Guide and mentor developers such as graduates and juniors 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 More ❯

Senior Java Developers – 3 positions available We’re looking for three experienced Java developers to play a key role in delivering long-term projects and supporting the growth of the wider engineering team. A rapidly growing healthtech scale-up is transforming how hospitals deliver care across the UK — and they're now expanding their More ❯

Senior Java Developers – 3 positions available We’re looking for three experienced Java developers to play a key role in delivering long-term projects and supporting the growth of the wider engineering team. A rapidly growing healthtech scale-up is transforming how hospitals deliver care across the UK — and they're now expanding their More ❯

Lead Java Engineer – London | £140k + Shares Java 21, Spring Boot, Microservices, TDD, BDD, REST, AWS, React You know that feeling when you’re not just writing code, you’re building the engine behind something that moves money, manages risk, and scales globally? That’s exactly what this team is doing. They’re a … high-impact. No legacy systems or old fluff to get through. Just clean architecture, smart engineering, and a product already making serious waves. You’ll join a small, senior team building real-time financial infrastructure from the ground up, card payments, transaction booking, FX flows, the kind of systems that need to be fast, secure, and bulletproof. Tech … stack: Java 21 (you’ll need experience with Java 17+, must), Spring Boot, PostgreSQL, AWS, TDD, CI/CD, React. As a Lead Engineer, you’ll have the freedom to shape the team, influence architecture, and build things the right way. They’re in-office just 1–2 days a week in London, backed More ❯

Lead Java Engineer – London | £140k + Shares Java 21, Spring Boot, Microservices, TDD, BDD, REST, AWS, React You know that feeling when you’re not just writing code, you’re building the engine behind something that moves money, manages risk, and scales globally? That’s exactly what this team is doing. They’re a … high-impact. No legacy systems or old fluff to get through. Just clean architecture, smart engineering, and a product already making serious waves. You’ll join a small, senior team building real-time financial infrastructure from the ground up, card payments, transaction booking, FX flows, the kind of systems that need to be fast, secure, and bulletproof. Tech … stack: Java 21 (you’ll need experience with Java 17+, must), Spring Boot, PostgreSQL, AWS, TDD, CI/CD, React. As a Lead Engineer, you’ll have the freedom to shape the team, influence architecture, and build things the right way. They’re in-office just 1–2 days a week in London, backed More ❯

Job Title: Senior Engineer with Node.js and Python or Back End (Java and ideally Kafka) Max rate: £537/Day on Umbrella Location: Croydon (Hybrid) Clearance required: SC Transfer (Active SC only ) Contract Duration: 05 months Experience of Java Experience of Spring framework or equivalent. Knowledge of software design patterns … of containerisation using Docker or Kubernetes Experience of Continuous Integration (CI) and Continuous Delivery (CD) A passion for delivering quality code, by use of TDD and setting high software quality standard We're also using the following technologies and patterns, it would be great if you had some of the skills, if not we can help develop them More ❯

As a Senior Java Developer, youll play a pivotal role in the design, development, and delivery of both greenfield and existing systems. Youll help shape our architectural direction, influence engineering best practices, and mentor team members all while remaining hands-on with coding and problem-solving. This is a unique opportunity to work across a modern … stack (Java, Spring, Angular, Kafka) and navigate the challenges of evolving a legacy platform into a cloud-native, microservice-oriented future. Key Responsibilities Design, develop, and maintain scalable Java RESTful APIs using the Spring framework. Collaborate with frontend engineers working in Angular/TypeScript to build modern user interfaces. Lead by example with strong, hands-on … coding in Java and JavaScript/TypeScript. Maintain, improve, and occasionally dive deep into complex, messy legacy code making pragmatic decisions about when to refactor, rewrite, or retire. Guide technical decision-making for a complex, evolving architecture with the opportunity to simplify and shape our future direction. Mentor, support, and upskill team members while fostering a positive, delivery More ❯

As a Senior Java Developer , you ll play a pivotal role in the design, development, and delivery of both greenfield and existing systems. You ll help shape our architectural direction, influence engineering best practices, and mentor team members all while remaining hands-on with coding and problem-solving. If you would like to know a bit … more about this opportunity, or are considering applying, then please read the following job information. This is a unique opportunity to work across a modern stack (Java, Spring, Angular, Kafka) and navigate the challenges of evolving a legacy platform into a cloud-native, microservice-oriented future. Key Responsibilities Design, develop, and maintain scalable Java RESTful APIs … using the Spring framework. Collaborate with frontend engineers working in Angular/TypeScript to build modern user interfaces. Lead by example with strong, hands-on coding in Java and JavaScript/TypeScript. Maintain, improve, and occasionally dive deep into complex, messy legacy code making pragmatic decisions about when to refactor, rewrite, or retire. Guide technical decision-making for More ❯