Founding C# Engineer - Cybersecurity Start-Up
Join an early-stage cybersecurity start-up on a mission to transform how modern organisations detect and respond to threats across cloud and enterprise systems. They’re already working with forward-thinking customers - and now we’re hiring exceptional engineers to help build the future of security from the ground up.
Why Join
- Join as an early founding engineer, working directly with the founders
- Shape product, architecture, and company culture from day one
- Build for real customers - solving critical problems at scale
- Modern, lean tech stack designed for speed, reliability, and scale
- Competitive salary + meaningful early equity
What You’ll Do
- Design, build, and ship high-impact features across the stack
- Architect scalable data and telemetry pipelines
- Collaborate closely with founders and customers to deliver real-world solutions
- Champion engineering excellence - infra-as-code, CI/CD, scalable cloud design
- Move fast, deploy frequently, and focus on customer value over bureaucracy
About You
- 3+ years’ experience building backend systems at scale
- Strong in C#, Python, Go, Java or similar backend languages
- Familiar with cloud platforms (AWS, GCP, or Azure)
- Pragmatic engineer who values both speed and quality
- Excited by cybersecurity - no prior experience needed, just curiosity
- London-based or able to collaborate in-person regularly
This is a unique opportunity to join at seed stage, own core systems, and help define how modern security platforms are built.
Founding C# Engineer - Cybersecurity - Seed-Stage Start-Up
