Principal Software Engineer - UK Security Clearance eligibility required

Location: London, UK (Hybrid ~1 day per week in office / onsite). Contract: Permanent, Full-time. Package: £80,000-90,000 + 10% bonus + 10% shares options + benefits.

About the Role

As a Principal Software Engineer, you will play a hands‑on technical leadership role across Appvia’s software engineering engagements, helping lead the design, delivery, and evolution of modern software systems. You will work closely with delivery managers, platform engineers, and customer stakeholders to drive high‑quality outcomes across complex software modernisation programmes. You’ll help lead and grow the team and contribute to Appvia’s broader engineering strategy by influencing tooling, development standards, AI‑assisted engineering approaches, testing practices, and architectural patterns used consistently across customer engagements.

Eligibility

You must be eligible for U...