Platform Engineer

Platform Engineer — UK National Security London (Hybrid) • SC Cleared (or Eligible) • Full-time UK SC clearance required (held or eligible). Up to £115k + Bonus & Benefits and Equity On-call rotation roughly every 5–6 weeks, run from a secure facility. Systems role for UK national-security deployments across cloud, on-prem, and fully air-gapped classified networks. THE ROLE Build and operate high-performance, scalable services powering large-scale data platforms for UK government national-security deployments.Own production reliability end-to-end: monitoring, alerting, configuration management, upgrades.Deploy new products into production and lead migrations onto newer infrastructure, including into air-gapped estates via an in-house continuous-delivery engine.Eliminate operational toil with automation, using data platforms and LLM/AI tooling to build novel systems.On-call rotation roughly every 5–6 weeks, run from a secure facility. THE IDEAL PROFILE 1–5 years in infrastructure, SRE, or platform engineering, with a genuine software-engineering core.Build production systems, not just operate them.Production Kubernetes/Docker experience.Proficient in Java, Python, Go, or JavaScript; IaC (Terraform/Ansible) and CI/CD.UK SC clearance held or clearly eligible (UK nationality or long-term residency). No visa sponsorship.Background in defence tech or big-tech/major-cloud SRE.Bonus: drones, self-driving, robotics, or edge systems.