Site Reliability Engineer

Site Reliability Engineer | Bristol (3 days onsite, 2 days remote) | £65,000–£95,000 DOE

Join a Team That Builds the Backbone of Secure, High-Performance Systems

In 2019, a group of engineers solving complex cross-domain challenges inside government organisations decided to take things further — and TwinStream was born.

Our mission? To deliver technical excellence, operational reliability, and exceptional client service for some of the UK’s most high-profile government projects.

Now, we’re growing — and we’re looking for a Site Reliability Engineer (SRE) who’s ready to shape the next generation of resilient, high-impact infrastructure.

Key Responsibilities of the Site Reliability Engineer:

As a TwinStream SRE, you’ll sit at the heart of our operation — ensuring the availability, performance, and cost-effectiveness of mission-critical cross-domain services.You’ll work closely with feature development teams and our BAU/Support engineers to:

• Drive reliability, performance, and scalability across cloud and on-prem systems
• Automate toil, reduce alert fatigue, and evolve monitoring capabilities
• Build and refine CI/CD pipelines to enable seamless delivery
• Strengthen observability and proactively prevent issues before they impact users
• Evaluate cutting-edge tools, frameworks, and cloud solutions to keep us ahead of the curve
• Expand your expertise across diverse technical domains and architectures

What You’ll Bring:

• Proven experience with Azure and modern infrastructure management tools (Ansible, Chef, etc.)
• Strong hands-on experience with Terraform, Docker, and Kubernetes/OpenShift/Docker Swarm
• Deep understanding of CI/CD pipelines (e.g. Jenkins), monitoring tools (Grafana, Prometheus, InfluxDB), and event-driven messaging (RabbitMQ or similar)
• Confident with Linux, SQL, and network security protocols
• Familiar with AWS services (EC2, S3, Lambda, RDS)

Bonus points if you have:

• Experience coding in Python, Java, or Go
• Knowledge of cross-domain technologies or service management environments
• Hands-on experience applying observability patterns and building availability metrics

Why You’ll Love Working Here:

• 8% employer pension contribution — invest confidently in your future
• Private medical healthcare (including dental & optical) for you and your family
• Learning and development budget — own your career growth
• Flexible working culture — 3 days onsite, 2 from home
• Electric Vehicle salary sacrifice scheme
• 28 days holiday + bank holidays
• Team events & celebrations — quarterly meetups, summer & Christmas parties
• Cycle to work scheme & life assurance for peace of mind

Security Requirements

Due to the nature of our work, successful candidates will need to be eligible for SC and/or DV clearance.

Ready to Build What Matters?

If you’re passionate about automation, resilience, and solving complex infrastructure challenges that make a real impact — we’d love to hear from you.

Apply now and join TwinStream, where your engineering skills keep the UK’s most vital systems running smoothly.