Salary: £63,000 - 103,000 per year Requirements: We are looking for an experienced software engineer with principal-level ownership experience. We need strong experience with distributed systems and microservices architectures. We require experience working in Linux-heavy, security-constrained environments. We are seeking a hands-on engineer with architectural ownership experience. We value a strong testing mindset with exposure to CI/CD and DevSecOps practices. We want someone confident influencing technical direction within small, senior teams. Responsibilities: We will own a Linux-based, microservices-driven software platform. We will develop core services and system components hands-on. We will define and evolve secure, scalable system architecture. We will work closely with and guide offshore engineering teams. We will contribute to strong testing, CI/CD, and DevSecOps practices. We will help shape the architecture and technical direction of a complex distributed system. We will support real-time monitoring, telemetry, alerting, and operational decision-making for critical infrastructure customers. Technologies: CI/CD DevSecOps Hardware Support Linux Security microservices Architect More: We are a specialist engineering business building software that integrates directly with radiation detection hardware used in highly sensitive security and critical infrastructure environments. Our platform supports real-time monitoring, telemetry, alerting, and operational decision-making where reliability, security, and accuracy are essential. This is a senior role based in Winchester with a hybrid working pattern of four days per week in the office. We offer a salary of £75,000 to £85,000, plus private healthcare and an enhanced pension. You will join a small but highly capable onshore team, working alongside an established offshore engineering function, with genuine influence over how our system evolves and how features are delivered. last updated 24 week of 2026