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🥝 Hybrid Lead Software Engineer – Distributed Systems Architect

Onyx-Conseil | eastleigh, United-Kingdom | Posted May 19, 2026

Job Description

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

Are you an experienced software engineer looking to take principal-level ownership of a complex, real-world distributed system used across security and critical infrastructure environments? This is a senior technical role within a specialist engineering business building software that directly integrates with radiation detection hardware deployed in highly sensitive settings. The platform powers real-time monitoring, telemetry, alerting and operational decision-making, supporting customers where reliability, security and accuracy are critical.

You will take ownership of a distributed, microservices-based platform, shaping its architecture and technical direction while remaining hands‑on with development. Working closely with a small but highly capable onshore team and an established offshore engineering function, you w...

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