Senior DevSecOps Engineer

An exciting opportunity for a Senior DevSecOps Engineer has arisen with a leading mission-critical telecommunications company, based in London. The right to work in the UK without sponsorship is essential for this vacancy. Eligibility for SC clearance is also required. Hybrid role - 3 days per week in the London office. This is a senior, hands-on engineering role requiring an experienced DevSecOps and platform engineer who has operated complex systems in production. You will personally design, build, secure, deploy, and operate mission-critical systems where downtime, misconfiguration, or security failures have real-world consequences. This role will involve: Security & DevSecOps Apply OS, container, and application hardening aligned with UK security standards. Actively operate SELinux in enforcing mode. Integrate SAST, dependency scanning, and image scanning into CI/CD pipelines. Participate in incident response, root-cause analysis, and remediation. Core Platform: Build and operate hardened Red Hat Enterprise Linux platforms across geo-redundant datacentres. Automate infrastructure using Ansible, Bash, and Python at scale. Design and troubleshoot CI/CD pipelines well beyond template configuration. Operate Kubernetes and OpenShift platforms, including security, networking, and failure recovery. Run Pacemaker/Corosync clusters and diagnose split-brain, fencing, and quorum issues. Configure HAProxy in active/active and active/passive configurations. Design platform-level routing using BGP/BFD (FRR or equivalent). Design and implement RESTful APIs in Go and Python used in live systems. Key skills/experience required: In-depth commercial expertise in a production DevSecOps / Devops / Platform role. Strong, demonstrable Red Hat Enterprise Linux experience. Production Go and Python backend development. Kubernetes or OpenShift operational responsibility. Experience in regulated, audited, or mission-critical environments. If you are a DevSecOps Engineer looking to work in a high-impact, mission-critical environment, please apply today or contact Matt Andrews to learn more!