Templeton & Partners

.net developer in electronic trading

In short

Senior .NET developer role building a cloud-based electronic trading platform for Fixed Income markets at a global financial services organisation, as part of a greenfield transformation programme. The role covers full-cycle development, technical design, and building scalable APIs and microservices, requiring strong .NET/.NET Core, Docker, microservices, automated testing, and CI/CD experience. It is a hybrid contract role in London, paying £600–£800 per day inside IR35 for an initial 12-month term.

Description
A global financial services organisation is modernising and enhancing electronic trading capabilities within Fixed Income markets through a greenfield transformation programme. It is building a cloud-based electronic trading platform to support global trading operations.
Responsibilities
•Lead the delivery of high-quality software solutions across the full development life cycle
•Contribute to technical design and architecture decisions
•Ensure best practices in code quality, automated testing, CI/CD, and software engineering standards
•Collaborate with traders, business stakeholders, and technology teams
•Design and develop scalable APIs and microservices
•Support the evolution of a cloud-based trading platform
Requirements
•Strong commercial experience with .NET/.NET Core
•Excellent understanding of Object-Oriented Design and SOLID principles
•Experience developing ASP.NET Core Web APIs and RESTful services
•Strong knowledge of multi-threading and asynchronous programming
•Experience with SQL and NoSQL databases
•Hands-on experience with Docker and containerisation
•Proven experience building microservices and service-oriented architectures
•Strong automated testing experience using tools such as NUnit, Moq, and Cucumber
•Experience with messaging technologies including RabbitMQ, TIBCO, SignalR, or similar
•Strong understanding of CI/CD pipelines, Git, and TeamCity or equivalent
•Experience working in Agile development environments
•Strong problem-solving and analytical skills
•Excellent communication and stakeholder management abilities
•Self-motivated and delivery-focused mindset
•Comfortable working in fast-paced, agile environments
•Passion for building scalable, high-performance technology solutions
Nice to have
•Fixed Income or Electronic Trading experience, exposure to financial markets and trading systems
•AWS Cloud experience
•Understanding of modern JavaScript frameworks
•CI/CD pipeline configuration and optimisation
Conditions
•£600 to £800 per day (Inside IR35)
•Initial 12-Month Contract

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