Net developer

Randstad Technologies RecruitmentCity, London🇬🇧United KingdomPosted 3 Sept 2026

Why This Role Stands Out

You'll have a significant impact by leading the technical architecture and design for a new greenfield electronic trading platform, leveraging modern AWS cloud infrastructure and microservices. This hybrid role is perfect for a mid-senior .NET developer with strong C# and AWS experience who thrives in a collaborative environment focused on building scalable, high-performance systems. Apply now to join a leading recruitment business and shape the future of fixed income trading technology.

Quick Overview

Seniority

Mid Senior

Employment type

Full Time

Work mode

Hybrid

Location

City, London, United Kingdom

DockerMicroservicesSQLTeamCityAWSAngularC#.NETASP.NETGitJavaScriptRabbitMQReact

Job Description

Senior .NET Developer

Location: London (Hybrid - 3 Days Office)

Type: Permanent

The Role

Join a high-performing team to build a brand-new, greenfield electronic trading platform for Fixed Income. You will drive technical architecture, system design, and delivery using modern AWS cloud infrastructure and microservice design.

Key Responsibilities

Lead technical design, architecture, and high-quality C# code delivery.
Build scalable, real-time microservices and RESTful Web APIs.
Maintain high test coverage (NUnit/Moq) and automated CI/CD pipelines.
Collaborate with partner tech teams to scale platform performance.

Required Skills

Core Tech: Strong C#, ASP.NET / .NET Core, Web APIs.
Messaging: Hands-on experience with RabbitMQ (or TIBCO/SignalR).
Cloud & Tools: AWS (EC2), Docker, Git/TeamCity.
Concepts: Multithreading, async programming, SQL/NoSQL, automated testing.

Nice-to-Haves

Fixed Income or electronic trading domain knowledge.
Exposure to JavaScript frameworks (React/Angular) or broader AWS services.

Apply Now: Submit your CV for immediate consideration.

Randstad Technologies Ltd is a leading specialist recruitment business for the IT & Engineering industries. Please note that due to a high level of applications, we can only respond to applicants whose skills & qualifications are suitable for this position. No terminology in this advert is intended to discriminate against any of the protected characteristics that fall under the Equality Act 2010. For the purposes of the Conduct Regulations 2003, when advertising permanent vacancies we are acting as an Employment Agency, and when advertising temporary/contract vacancies we are acting as an Employment Business.