Principal Software Engineer – Node / TypeScript
£130,000 – £150,000
100% Remote – UK / Europe
Tech stack: Node.js, TypeScript, Cloud, Distributed Systems, APIs, Async Processing
Immersum is supporting a bootstrapped CyberSecurity SaaS company specialising in vulnerability scanning as they look to hire a Principal Software Engineer. With a team of just six, they are building a security-focused cloud platform that helps organisations continuously reduce risk across their digital estate. Fully remote and engineering-led, the business prioritises clean architecture and long-term technical quality.
Who They’re Looking For
A T-shaped engineer with deep Node.js and TypeScript expertise who enjoys owning complex systems, influencing technical direction, and staying hands-on.
The Role
• Design and evolve backend services supporting APIs and asynchronous workflows
• Own architecture decisions focused on scalability and reliability
• Set high standards for code quality, testing, and observability
• Address performance, reliability, and technical debt
• Contribute to technical strategy while remaining hands-on
What You’ll Bring
Strong production experience with Node.js and TypeScript
Background in distributed systems and event-driven architecture
Experience designing multi-consumer APIs
Solid understanding of cloud environments, data, and reliability
Clear communicator with principal-level impact
Why Join?
Mission-critical product with real engineering impact
Senior, low-ego team with high ownership
Fully remote, high-trust environment
Genuine influence over technical direction
Please note this role does not offer sponsorship.