.Net developer

Company: Randstad
Apply for the .Net developer
Location: London
Job Description:

Overview

In this role you will lead the design and delivery of a brand-new electronic trading platform for Fixed Income, driving architecture for a high-throughput, low-latency engine on AWS. You will build real-time microservices and REST APIs, ensure robust multithreaded and asynchronous processing, and maintain strong test coverage with CI/CD. You’ll work closely with cross-functional teams to shape a scalable, mission-critical system in a vibrant trading domain. This is a hands-on, impact-driven position with a clear path to influence platform direction.

Responsibilities

  • Lead technical design and system architecture for the platform
  • Develop low-latency microservices and RESTful APIs in C#/.NET
  • Implement multithreaded and asynchronous processing for high-volume streams
  • Maintain high test coverage using NUnit/Moq and manage automated CI/CD pipelines

Key requirements

  • Strong C#, ASP.NET / .NET Core, Web APIs
  • Experience with real-time, low-latency, high-throughput processing
  • Hands-on messaging experience with RabbitMQ (or TIBCO/SignalR)
  • AWS (EC2), Docker, Git/TeamCity, SQL/NoSQL
  • C# / .NET Core / ASP.NET
  • Real-time data processing, multithreading, asynchronous programming
  • RabbitMQ (or TIBCO/SignalR)
  • AWS (EC2)
  • Docker
  • Git/TeamCity

Posted: September 14th, 2026