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Senior Platform Engineer (United Kingdom)

Second Front Systems· Engineering
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United Kingdom, London and Surrounding Areas£110k - £130kFull-timePosted 2mo ago

About the role

Senior Platform Engineer role in the UK focusing on DevSecOps for the Game Warden platform, with UK security clearance requirements and UK-based remote-first work.

Responsibilities

  • Support the security and operations of Game Warden across air-gapped and classified environments, working directly with government partners and security teams.
  • Build and manage CI/CD pipelines that integrate DevSecOps best practices from development through to deployment.
  • Integrate and maintain SIEM and security tooling, ensuring observability and compliance across all deployed systems.
  • Build and implement scalable, secure cloud infrastructure using Kubernetes and Pulumi (Go-based), ensuring compliance with UK government and Ministry of Defence security requirements.
  • Work cross-functionally to assess infrastructure needs, prioritise development, and deliver on product roadmap milestones in a fast-paced Agile environment.
  • Document your work thoroughly — from infrastructure to internal procedures — to ensure secure, repeatable, and auditable deployments.
  • Collaborate directly with UK defence and government stakeholders to provision secure cloud resources and meet deployment and accreditation criteria in classified settings.
  • Contribute to R&D and experimentation needed to advance platform capabilities in secure and disconnected environments.
  • Act as a senior technical resource, helping to shape 2F’s UK DevSecOps strategy and infrastructure standards.

Qualifications

  • 5–7+ years of relevant experience in DevSecOps, systems engineering, and software development.
  • Senior-level expertise designing and building cloud-native platforms using AWS, Azure, or GCP.
  • Experience with Kubernetes, Docker, and cloud-native application orchestration.
  • Strong proficiency in Golang or similar languages
  • Familiarity with UK and international compliance frameworks such as MOD Secure by Design, JSP 453, NCSC Cloud Security Principles, NIST 800-53.
  • Experience deploying systems in air-gapped or classified environments.
  • Experience building and maintaining secure CI/CD pipelines and integrating security throughout the SDLC.
  • Hands-on experience implementing or managing SIEM, monitoring, and alerting systems.
  • Understanding of REST APIs, authentication flows, event-driven architecture, and microservice patterns.
  • Excellent written and verbal communication skills, with strong documentation habits.
  • Comfortable working independently and in distributed teams, managing competing priorities across complex projects.
  • Proficient in using AI tools (such as Claude and Gemini) to accelerate and enhance day-to-day work, from code generation, debugging, and documentation to research and problem-solving — with sound judgement about where AI adds value and where human oversight is required.
  • Certified AWS, Google or Azure Solutions Architect.
  • Prior experience working within UK defence, national security, or regulated government environments.
  • Experience working in early-stage or high-growth start-up environments.
  • Familiarity with UK accreditation and risk-management processes and environments (e.g., MOD Secure by Design).
  • Familiarity with GitLab, Google Workspace, and Slack.
  • A genuine interest in national security and mission-driven innovation.

Skills

Required:Cloud-native platform designKubernetesDockerGolangDevSecOpsSIEM/MonitoringAir-gapped/classified environments

Benefits

  • Competitive salary benchmarked to UK market
  • Private healthcare (medical, dental, and optical)
  • Pension scheme with employer contribution
  • Wellness perks (fitness, mental health resources)
  • Equity incentive plan
  • Technology and home-office stipend
  • Annual professional development budget
  • Flexible paid time off plus UK public holidays
  • Enhanced parental leave
  • Remote-first working with travel expenses covered
  • Referral bonus scheme
Last updated Sep 2, 2026. Interested? Apply on the company site.
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