freehire launches on Product Hunt on 26 August.

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Principal Software Engineer

Summary

Lead a team building scalable, low-latency .NET services using C#, gRPC, Kafka, and multithreading while mentoring engineers and shaping architecture.

Salary: £80,000 - 80,000 per year

Requirements:
  • I require 10 years of C#/.NET (Core/5) development experience.
  • I need proven expertise in scalable, distributed, low-latency systems.
  • A strong background in web applications, gRPC, Kafka/RabbitMQ, and multithreading is essential.
  • I expect a solid understanding of performance tuning, security, and software architecture.
  • Experience with WPF and design patterns such as MVVM, MVP, and MVC is necessary.
  • Excellent leadership and communication skills are a must.
Responsibilities:
  • I will need you to lead the design and development of high-performance, secure communication systems in C#.NET.
  • You will be tasked with building low-latency, high-volume data applications for real-time processing.
  • I expect you to define and drive the technical strategy aligned with our business objectives.
  • Your role will involve overseeing code quality, conducting reviews, and implementing CI/CD pipelines.
  • I want you to troubleshoot complex issues and ensure system reliability.
  • You will also mentor developers and foster a culture of technical excellence.
Technologies:
  • C#
  • CI/CD
  • Kafka
  • MVC
  • MVVM
  • RabbitMQ
  • Security
  • WPF
  • Web
  • gRPC
  • ASP.NET

More:

We are a rapidly growing company based in Cambridgeshire, specializing in the development and supply of radio terminals, accessories, and applications for mission-critical and business-critical communications. Due to our continued expansion, we are looking for a Principal Software Engineer to join our growing team and play a key role in the development, integration, and maintenance of our web and communication platforms. If you have the relevant experience and are ready for your next challenge, I invite you to apply with a copy of your latest CV/Resume.

last updated 32 week of 2026

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