London, South East, England, United Kingdom Hybrid / WFH Options
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eFX Software Engineer - Permanent | London (Hybrid) We're hiring an experienced eFX Software Engineer to join a leading financial institution's digital technology division. This is a permanent position based in London with a flexible hybrid working model. You'll More ❯
engine, clearing and settlement as well as capital markets system integration will be a very useful complement to the above. 2. Key technology used Primary: Java 8+ Secondary: Spring FIX Hibernate (Postgres) Sockets Linux Maven AWS/Cloud deployment SVN/GIT EPL (Esper) JMS (ActiveMQ) 3. Methodology Agile/Scrum Continuous integration Test automation TDD 4. Requirements Must … Core Java SE Desire to learn Passion for writing clean, re-usable code Understanding of peer-to-peer networks Nice to have High throughput, low latency systems Financial markets FIX Blockchain Spring Hibernate Complex event processing/EPL SQL 5. Company culture We provide best of breed trading venue and post-trade solutions to global financial markets and have More ❯
London - Contract - Hybrid *outside iR35* What You'll Be Doing Designing and developing enterprise-grade solutions in an Agile team. Building and maintaining middleware services using C# , REST APIs , FIX messaging , XML , and Microservices . Leading architecture discussions, code reviews, and release management. Collaborating with users and cross-functional teams to define and execute testing strategies. Mentoring junior developers … trading , especially with derivatives and platforms like ICE , CME , NASDAQ , Trayport , or TT . Deep knowledge of C# .NET , RESTful services , and microservice architecture . Hands-on experience with FIX messaging , XML , AMQ , and ideally nHibernate , OData , and TDD . Familiarity with Agile tools like JIRA , Confluence , and Crucible . Excellent communication skills and a pragmatic approach to problem More ❯
London - Contract - Hybrid *outside iR35* What You'll Be Doing Designing and developing enterprise-grade solutions in an Agile team. Building and maintaining middleware services using C# , REST APIs , FIX messaging , XML , and Microservices . Leading architecture discussions, code reviews, and release management. Collaborating with users and cross-functional teams to define and execute testing strategies. Mentoring junior developers … trading , especially with derivatives and platforms like ICE , CME , NASDAQ , Trayport , or TT . Deep knowledge of C# .NET , RESTful services , and microservice architecture . Hands-on experience with FIX messaging , XML , AMQ , and ideally nHibernate , OData , and TDD . Familiarity with Agile tools like JIRA , Confluence , and Crucible . Excellent communication skills and a pragmatic approach to problem More ❯
Lead. Primary Responsibilities • Design, implement, test, deploy, and maintain OTC trading systems (primarily in C#) supporting Spot, Options, and Structured Products workflows. • Build and enhance API services (REST, WebSocket, FIX 4.4) used by clients and internal trading systems. • Work closely with traders, quants, and other engineers to deliver performant, secure, and scalable solutions. • Collaborate with the Principal Engineer and … time or low-latency distributed systems. • Familiarity with quantitative pricing integration and automated testing frameworks. • Understanding of risk management, order management systems (OMS), and trade lifecycle workflows. • Experience building FIX or WebSocket APIs for trading. • Options and structured products experience. Our Tech Stack • Backend: C#, Python • Frontend: React • Databases: PostgreSQL, DynamoDB • Infrastructure: AWS (EKS, EC2) • Version Control & CI/ More ❯
