Real-Time .NET Architect – C#, Microservices & Low-Latency

Randstad; Greater London; On-site; GBP 53,000 - 93,000; Full time

Job summary

Randstad is seeking an accomplished Senior C#/.NET developer in Greater London to design and deliver high-performance real-time services.

You will lead architectural decisions, build low-latency microservices and RESTful APIs, and implement asynchronous processing for high-volume data streams in a fast-paced trading-related environment. The role also involves working with AWS, Docker, and messaging systems such as RabbitMQ to enable scalable cloud-native patterns.

Qualifications

• Strong C# / .NET experience with ASP.NET / .NET Core and REST APIs.
• Experience with multithreading, asynchronous programming, and low-latency processing.
• Hands-on experience with RabbitMQ, or TIBCO/SignalR.
• Experience with AWS (EC2), Docker, Git/TeamCity, and SQL/NoSQL.
• Fixed Income or electronic trading domain knowledge is a nice to have.
• Exposure to JavaScript frameworks such as React or Angular, or broader AWS services, is a nice to have.

Responsibilities

• Lead technical design, system architecture, and C# code delivery.
• Build low-latency, real-time microservices and RESTful Web APIs.
• Implement multithreaded and asynchronous processing for high-volume data streams.

Skills

C# / .NET

Async programming

RESTful APIs

Low-latency processing

React / Angular

Tools

RabbitMQ

TIBCO/SignalR

AWS

Docker

Git/TeamCity

SQL/NoSQL

Job description

Randstad is seeking an accomplished Senior C#/.NET developer in Greater London to design and deliver high-performance real-time services.

You will lead architectural decisions, build low-latency microservices and RESTful APIs, and implement asynchronous processing for high-volume data streams in a fast-paced trading-related environment. The role also involves working with AWS, Docker, and messaging systems such as RabbitMQ to enable scalable cloud-native patterns.