24 of 24 Java Developer Jobs in the City of London

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 ❯

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 ❯

Java Developer - £100,000 - £140,000 – London/Hybrid Java 21 | Microservices | Spring boot | AWS | Startup | Scaleup | Fintech | Banking | Amazon Web Services | PostgreSQL | Are you a Java Developer who wants to have a voice within the team? Maybe you want to join a fast growing company with lots of progression. If so I have a … role for you. Opus have partnered with a VC Backed Fintech start-up who are looking to grow their London office. They are growing quickly so are looking for Java Developers of all levels from Mid – Tech Lead to join the team. They are currently about 100 people strong and looking to double this within the next 12 months. … As a Developer you will be building and maintaining high performing back end systems. The sort of projects you will be involved in is building API’s , developing microservices and upgrading existing systems. Experience needed – Java 21 TDD AWS They’re also looking for people who have worked within a fast paced Startup/scaleup company. What is 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 ❯

I'm looking for an exceptional Java developer to join SpectrAxe — the first true all-to-all, anonymous FX options trading platform. If you have very strong middle-tier development skills (and/or full-stack experience with React) and are ready to take the next step in your career — where your work has real impact in a … help shape the evolution of a live trading platform used by institutional clients globally. Get in touch to discuss the role. You’ll Be Working On: Designing and developing Java-based applications & microservices Using algorithms, Collections, Streams, and concurrency in Java 11+ Building services with the Spring Framework Writing robust tests with JUnit4/5 & Mockito Developing with … PostgreSQL , optimising for performance Using Docker & CI/CD tools to deliver production-quality releases We’re Looking For: Strong Java 11+ skills (Collections, Streams, Concurrency) Solid understanding of algorithms & data structures Spring Framework experience JUnit & Mockito testing experience PostgreSQL expertise Familiarity with Docker & CI/CD (Jenkins, GitHub Actions, etc.) Bonus Points For: Financial services , trading systems background More ❯

I'm looking for an exceptional Java developer to join SpectrAxe — the first true all-to-all, anonymous FX options trading platform. If you have very strong middle-tier development skills (and/or full-stack experience with React) and are ready to take the next step in your career — where your work has real impact in a … help shape the evolution of a live trading platform used by institutional clients globally. Get in touch to discuss the role. You’ll Be Working On: Designing and developing Java-based applications & microservices Using algorithms, Collections, Streams, and concurrency in Java 11+ Building services with the Spring Framework Writing robust tests with JUnit4/5 & Mockito Developing with … PostgreSQL , optimising for performance Using Docker & CI/CD tools to deliver production-quality releases We’re Looking For: Strong Java 11+ skills (Collections, Streams, Concurrency) Solid understanding of algorithms & data structures Spring Framework experience JUnit & Mockito testing experience PostgreSQL expertise Familiarity with Docker & CI/CD (Jenkins, GitHub Actions, etc.) Bonus Points For: Financial services , trading systems background 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 ❯

opportunity to be part of our team to drive our software development agenda for our people analytics cloud products. Job Description: We are seeking a highly skilled Full Stack Java Developer to join our dynamic team. In this role, you will be responsible for designing, developing, and maintaining scalable web applications leveraging Java technologies within an AWS … cloud environment. You will collaborate with cross-functional teams to deliver high-quality software solutions that meet business requirements. Key Responsibilities: Develop, test, and maintain scalable backend SAS using Java with AWS. Build intuitive, responsive front-end applications using modern JavaScript frameworks (React, Angular, or Vue.js) Architect and deploy cloud-native applications utilising AWS services such as EC2, S3 … proper documentation Troubleshoot, debug, and resolve technical issues Qualifications: Bachelor’s degree in Computer Science, Engineering, or related field At least 3 years’ experience in full-stack development with Java, and JavaScript frameworks Strong understanding of AWS cloud platform and services Knowledge of RESTful APIs, microservices architecture, and database management (SQL and NoSQL) Experience with CI/CD tools More ❯

opportunity to be part of our team to drive our software development agenda for our people analytics cloud products. Job Description: We are seeking a highly skilled Full Stack Java Developer to join our dynamic team. In this role, you will be responsible for designing, developing, and maintaining scalable web applications leveraging Java technologies within an AWS … cloud environment. You will collaborate with cross-functional teams to deliver high-quality software solutions that meet business requirements. Key Responsibilities: Develop, test, and maintain scalable backend SAS using Java with AWS. Build intuitive, responsive front-end applications using modern JavaScript frameworks (React, Angular, or Vue.js) Architect and deploy cloud-native applications utilising AWS services such as EC2, S3 … proper documentation Troubleshoot, debug, and resolve technical issues Qualifications: Bachelor’s degree in Computer Science, Engineering, or related field At least 3 years’ experience in full-stack development with Java, and JavaScript frameworks Strong understanding of AWS cloud platform and services Knowledge of RESTful APIs, microservices architecture, and database management (SQL and NoSQL) Experience with CI/CD tools More ❯

high transaction online gaming websites. You will be required to produce robust, clear and polished code to tight time-scales. This is an excellent opportunity for a highly-motivated Java developer to be involved in the delivery of new customer products and/or customer roadmaps. The candidate will be a key member of an agile development team … will leverage cutting edge technologies to deliver betting opportunities and odds via an automated platform. You will be involved in: Proposing and implementing technical solutions by developing and maintaining Java-based components and interfaces. Defining technical objectives by analysing user requirements and proposing system features and functionality. Determining design methodologies and tool sets; completing programming using languages and software … and operating platforms. Supporting customers (internal and external) by developing documentation and assistance tools. REQUIREMENTS you will have: Multi-threaded programming 3+ years experience Spring framework Hibernate Proficiency in Java debugging Strong SQL JMS More ❯

Java Quant Developer – FX & Crypto | London (Hybrid) Join a high-impact team at the intersection of trading, tech, and research. I’m looking for a Java Quant Developer to help evolve a 24/7 OTC trading stack. You’ll work alongside experienced traders and researchers to build cutting-edge pricing and execution systems for FX … frameworks • Design and backtest Alpha Signals for market execution • Enhance trade execution efficiency and system performance • Implement robust risk management and stress-testing tools 🎯 What You Bring • 5+ years Java (OOP, low-latency systems) • 4+ years FX or Crypto trading experience • Python (NumPy, Pandas, SciPy) • SQL or time-series DBs • Linux & distributed systems expertise • Strong communication & market intuition ✨ Bonus More ❯

Java Quant Developer – FX & Crypto | London (Hybrid) Join a high-impact team at the intersection of trading, tech, and research. I’m looking for a Java Quant Developer to help evolve a 24/7 OTC trading stack. You’ll work alongside experienced traders and researchers to build cutting-edge pricing and execution systems for FX … frameworks • Design and backtest Alpha Signals for market execution • Enhance trade execution efficiency and system performance • Implement robust risk management and stress-testing tools 🎯 What You Bring • 5+ years Java (OOP, low-latency systems) • 4+ years FX or Crypto trading experience • Python (NumPy, Pandas, SciPy) • SQL or time-series DBs • Linux & distributed systems expertise • Strong communication & market intuition ✨ Bonus More ❯

Graduate/Junior Developer, Python, Linux, C#, Java - London (Teck stack: Graduate/Junior Developer, Python, Linux, C#, Java, .NET 9, C#, J2EE, Agile, TDD, BDD, Graduate/Junior Developer) Since 2006 our client's revolutionary marketing software platform has been helping businesses all over the world to attract, engage, and delight customers by delivering … inbound experiences that are relevant, helpful, and personalized. Having recently launched in the UK, they looking to hire Graduate/Junior Developer (Python, Linux, C#, Java)) to become a part of their ever-growing family. They believe that individual developers are in the best position to make decisions about what should be created, and how it should be … They believe that problems are solved with technology and experience, not process, and that mistakes are a normal part of learning. These roles would be suitable Graduate/Junior Developer who have recently graduated from university and have a basic understanding of any of the following technologies: Python, Linux, C# or Java; which might have been acquired as More ❯

Join CMC Markets' Pricing and Risk team, where youll work on our low latency, high-frequency trading platform. You will use cutting-edge Java programming techniques so experience in this area is essential. As a Senior Developer, youll not only code but also take on key design responsibilities, shaping impactful projects. You'll mentor junior members of the … is an onsite role that will require you to work within our London office (near Liverpool street) 5 days on site per week . *** What Youll Do Expert Level Java Development: You will apply your in-depth knowledge of the Java programming language (21+) to implement world class trading and pricing systems. Collaborative Development: Design and develop innovative … tailored to the ever-changing financial landscape. Career Advancement: Opportunities for career growth, including leadership roles, are encouraged and supported by our mentorship programs. What Were Looking For Strong Java development experience within financial systems, ideally in pricing or risk-related applications. Not just a coder, but someone who also focuses on applying best practices, design patterns and principles More ❯

Healthcare, Technology and Services, Telecom and Media, Retail and CPG, and Public Services. Consolidated revenues as of 12 months ending December 2024 totaled $13.8 billion. Preferred/Desired Skills Java coding, cloud computing preferable AWS, Kubernetes, Kafka and Terraform experience and knowledge Job Description: Building microservices in Java, ideally with a broad experience of frameworks, including asynchronous frameworks More ❯

Duration of assignment: 1 year (potential prolongation) Onsite requirements: 3 days/weekly in London office Your Experience and Skills Required: 10+ years of professional Java development experience Strong knowledge of low-latency, multi-threaded programming techniques Experience with trading platforms (e.g., Bloomberg, Tradeweb) Understanding of financial markets, particularly Rates and Credit bonds/derivatives Oustanding experience and knowledge More ❯

Duration of assignment: 1 year (potential prolongation) Onsite requirements: 3 days/weekly in London office Your Experience and Skills Required: 10+ years of professional Java development experience Strong knowledge of low-latency, multi-threaded programming techniques Experience with trading platforms (e.g., Bloomberg, Tradeweb) Understanding of financial markets, particularly Rates and Credit bonds/derivatives Oustanding experience and knowledge More ❯

the design of large kdb+ systems. Strong understanding of computer science fundamentals and modern software development practices. Experience with development in a Unix and/or Linux environment. Core Java development experience is often required. Experience with low-latency systems development and tick data capture. Knowledge of market data and algorithmic trading data is highly beneficial. Experience with various More ❯

the design of large kdb+ systems. Strong understanding of computer science fundamentals and modern software development practices. Experience with development in a Unix and/or Linux environment. Core Java development experience is often required. Experience with low-latency systems development and tick data capture. Knowledge of market data and algorithmic trading data is highly beneficial. Experience with various More ❯

environment. This role sits within a front-office aligned technology team responsible for delivering high-performance trading solutions across the rates business. Responsibilities: Design and implement low-latency, multithreaded Java applications for electronic rates trading Develop and optimise execution algorithms, smart order routers, and pricing engines Profile and tune Java applications for garbage collection efficiency, lock contention, and More ❯

environment. This role sits within a front-office aligned technology team responsible for delivering high-performance trading solutions across the rates business. Responsibilities: Design and implement low-latency, multithreaded Java applications for electronic rates trading Develop and optimise execution algorithms, smart order routers, and pricing engines Profile and tune Java applications for garbage collection efficiency, lock contention, and More ❯