Principal Software Engineer (.NET)

TL;DR

Principal Software Engineer (.NET): Leading the modernization of legacy systems into scalable, cloud-ready architectures with an accent on high-performance backend services and distributed systems. Focus on shaping technical strategy, mentoring engineering teams, and driving best practices in CI/CD and software design.

Location: Hybrid role based in Cambridge, UK

Salary: £7,001–£7,002

Company

An established technology organization developing advanced software solutions for leading global businesses.

What you will do

• Lead the modernization of legacy C systems into scalable, cloud-enabled .NET services.
• Own the architecture, technical design, and delivery of high-performance software solutions.
• Develop backend services, messaging systems, and distributed applications.
• Drive code quality, testing, CI/CD, security, and development best practices.
• Mentor engineers and collaborate on technical strategy and roadmap planning.

Requirements

• Strong commercial experience with C, C#, and modern .NET technologies.
• Proven background in software architecture, distributed systems, microservices, and cloud-based applications.
• Experience developing and deploying solutions across Linux and Windows environments.
• Strong MS SQL expertise, including performance optimization and database design.
• Experience modernizing legacy applications within Agile environments.

Nice to have

• Experience with TypeScript or Python.
• Knowledge of DevOps practices.
• Background in large-scale SaaS platforms.

Culture & Benefits

• Hybrid working model.
• Private healthcare and life assurance.
• Enhanced pension contribution.
• Generous annual leave allowance.
• Learning and development support with professional certification opportunities.