Principal Software Engineer

Lead Software Engineer
£75,000 to £85,000 + Private Healthcare + Enhanced Pension
Southampton (Hybrid, 4 days per week in the office)

Are you a senior software engineer looking to take end to end ownership of a complex, real-time distributed platform that integrates directly with mission-critical hardware used in security and critical infrastructure environments?

This is a principal-level technical role within a specialist engineering business developing a real-world platform that ingests, processes and surfaces live telemetry from radiation detection systems deployed in highly sensitive locations. The software underpins real-time monitoring, alerting and operational decision-making, where performance, reliability and security are non-negotiable.

You will lead the technical direction of a TypeScript-based microservices platform, remaining hands-on across backend services while also owning a large Angular enterprise application used by customers in the field. ...