Site Reliability Engineer

  • Pertemps London
  • 13/05/2026
Full time Information Technology Telecommunications

Job Description

Site Reliability Engineer (SRE)

London (Hybrid - 2-8 days per month in office)
£50,000 per annum
Clear progression to Mid-Level SRE within 18 months

We're working with a growing, engineering-led organisation looking to hire a Site Reliability Engineer who enjoys solving real platform problems through automation-not just firefighting tickets.

This is an ideal opportunity for someone with 2-3 years of DevOps, Platform Engineering or SRE experience who wants to take ownership of CI/CD, infrastructure-as-code, and platform tooling while continuing to build production-grade coding skills.
The OpportunityThis role blends hands-on engineering with platform ownership. You'll spend your time split between:
  • Supporting developers with broken builds and deployments (40%)
  • Designing and building automation, CI/CD pipelines, and Terraform infrastructure (60%)
You'll act as the automation backbone of the platform-reducing manual effort, improving reliability, and enabling engineering teams to move faster.
Key ResponsibilitiesDeveloper Support & Troubleshooting (40%)
  • Debug failing builds, deployments, and CI/CD pipelines
  • Provide Tier 2/3 support via Slack, tickets, and pairing sessions
  • Take ownership of incidents, ensuring reliable and timely resolution
Platform Engineering & Automation (60%)
  • Design, build, and optimise CI/CD pipelines (GitHub Actions, Jenkins, GitLab CI)
  • Develop and maintain Terraform modules for infrastructure-as-code
  • Build automation tools (CLI tools, scripts, GitHub Apps, self-service tooling)
  • Own observability: dashboards, alerts, monitoring, and runbooks
  • Continuously improve platform processes and reduce operational toil
What We're Looking ForEssential Skills & Experience
  • 2-3 years in DevOps, SRE, or Platform Engineering
  • Strong Linux troubleshooting and systems knowledge
  • Proven experience with Terraform (module design, not just usage)
  • CI/CD experience (GitHub Actions, GitLab CI, Jenkins)
  • Ability to write production-quality code in Python or Bash
  • Solid networking fundamentals (DNS, load balancers, CDNs)
  • Experience with observability tools (NewRelic, Datadog, Prometheus, Grafana)
  • Comfortable participating in on-call rotations
  • Experience using AI tools (e.g. ChatGPT, Copilot, Cursor) to enhance productivity
Desirable
  • Go, Ansible, or configuration management experience
  • Experience working with multiple CDNs (CloudFront, Fastly, Cloudflare)
About You
  • You're a proactive problem-solver who automates rather than repeats
  • You communicate clearly with both technical and non-technical stakeholders
  • You stay calm under pressure and take ownership during incidents
  • You care about clean, maintainable, production-quality code
  • You actively use AI tools to improve how you build and debug systems
What's On Offer
  • £50,000 salary
  • Genuine ownership of CI/CD and platform automation
  • Direct collaboration with the Head of Technology
  • Clear progression to mid-level SRE within 18 months
  • Learning budget and dedicated development time
Why Apply?This is not a ticket-driven support role. You'll be a key technical contributor shaping how the platform operates-working alongside engineers who code and influencing real infrastructure and tooling decisions.