Principle Software Engineer

Platform Recruitment; Cambridge; On-site; GBP 70,000 - 90,000; Full time

Job summary

A leading technology firm in Cambridge is seeking a Principal Software Engineer. This role involves developing high-performance, secure communication systems and mentoring a team. Candidates should have over 10 years of experience in C#/.NET, with expertise in distributed systems and web applications. Join a rapidly growing company dedicated to mission-critical communications.

Qualifications

• 10+ years of C#/.NET (Core/5+) development experience.
• Proven expertise in scalable, distributed, low-latency systems.
• Strong background in web applications and multithreading.

Responsibilities

• Lead the design and development of high-performance communication systems.
• Mentor developers and foster a culture of technical excellence.
• Troubleshoot complex issues to ensure system reliability.

Skills

C#/.NET development

Distributed systems

Leadership

Web applications

gRPC

Kafka/RabbitMQ

Multithreading

Performance tuning

Software architecture

Job description

Principal Software Engineer

Location: Cambridge

Work Setup: Onsite

We’re partnering with a rapidly growing Cambridge‑based company specializing in the development and supply of radio terminals, accessories, and applications for mission‑critical and business‑critical communications. Due to continued expansion, they’re looking for a Principal Software Engineer to join their growing team.

The successful candidate will play a key role in the development, integration, and maintenance of the company's web and communication platforms.

Key Responsibilities

• Lead the design and development of high‑performance, secure communication systems in C#.NET
• Build low‑latency, high‑volume data applications for real‑time processing
• Define and drive technical strategy aligned with business objectives
• Oversee code quality, conduct reviews, and implement CI/CD pipelines
• Troubleshoot complex issues and ensure system reliability
• Mentor developers and foster a culture of technical excellence

Key Requirements

• 10+ years of C#/.NET (Core/5+) development experience
• Proven expertise in scalable, distributed, low‑latency systems
• Strong background in web applications, gRPC, Kafka/RabbitMQ, and multithreading
• Solid understanding of performance tuning, security, and software architecture
• Experience with WPF and design patterns such as MVVM, MVP, and MVC
• Excellent leadership and communication skills

If you have the relevant experience and are looking for your next challenge, please apply with a copy of your latest CV/Resume.