C# WCF Developer Fintech

In this role you will contribute to a real-time market data platform, expanding and supporting greenfield products within a fast-paced fintech environment. You will develop new data feeds and fund transaction systems while enabling high-availability services for major market data delivery. You’ll work with a technically driven team on cutting-edge trading and data-feeding capabilities, delivering impactful analytics and scalable solutions. This is a hands-on, growth-focused opportunity in London with a strong performance-driven culture.

• Add and develop new data feeds to databases and large datasets
• Support and evolve existing products on a new fund transaction system
• Contribute to the design and delivery of greenfield products
• Work on real-time market data platform enhancements and analytics tooling
• Collaborate with cross-functional teams in a tech-driven environment
• Engage in performance, concurrency, and high-availability aspects of systems

• C# development experience with Visual Studio
• Experience in financial messaging or transactional environments
• Multithreading expertise
• High availability systems experience
• WebSphere knowledge
• Concurrency control
• WCF experience
• SQL proficiency
• XML and XSLT processing
• OO development patterns
• Sorting algorithms
• Test-Driven Development (TDD)
• Financial services domain experience
• Nice-to-have: Swift, FIX or other financial messaging technologies

• collaborative
• adaptable to rapid change
• problem-solving mindset
• C#
• WCF
• SQL