Site Reliability Engineer

Site Reliability Engineer
Bristol / Hybrid
£70,000 - £110,000 DOE + Excellent Benefits

Ready to shape the future of secure, high-performance systems? Join TwinStream.

At TwinStream, we don't just build technology—we solve complex, mission-critical challenges for high-profile government clients. Formed by engineers for engineers, we’re driven by a passion for technical excellence and exceptional service delivery.

Our teams thrive in a culture of trust, innovation, and flexibility—whether embedded with clients or collaborating remotely. We’re growing fast, and right now we’re looking for an experienced Site Reliability Engineer (SRE) to strengthen our infrastructure and keep our cutting-edge systems running at peak performance.

The Site Reliability Engineer role:

As an SRE, you’ll play a vital role in maintaining the reliability, performance, and scalability of our cross-domain services. You’ll partner closely with engineering and support teams to evolve infrastructure, automate processes, and proactively eliminate downtime.

Expect to:

• Improve system performance and observability across cloud and on-prem environments
• Automate repetitive tasks and reduce alert fatigue
• Strengthen our CI/CD pipelines using modern tooling
• Research and implement tools to improve reliability, scalability, and cost-efficiency
• Support both live and development systems with critical monitoring and response

Skills & Experience:

• Configuration management (Ansible, Chef, etc.)
• Terraform & Infrastructure-as-Code
• Docker containers and orchestration (Kubernetes, OpenShift, etc.)
• CI/CD tools like Jenkins
• Observability tools (Grafana, Prometheus, InfluxDB)
• MQ messaging systems (RabbitMQ or similar)
• Strong Linux skills, shell scripting, and networking fundamentals
• Experience with AWS (EC2, S3, RDS, Lambda)

What’s on Offer?

We’re not just another tech company—we offer real impact, cutting-edge projects, and a genuine investment in your growth;

• £1,000 annual training budget – Drive your own development
• Private medical care (including dental & optical) for you and your family
• EV salary sacrifice scheme – Drive green, save money
• 25 days holiday + bank holidays
• Flexible & hybrid working – Your work, your rhythm
• 8% employer pension contribution
• Cycle to work scheme
• Regular team socials – From quarterly meets to summer and Christmas parties
• Life assurance – For added peace of mind

Ready to apply?

If you're ready to work on systems that matter, in a company that puts people and engineering first—we want to hear from you. APPLY NOW for this Site Reliability Engineer position.

Note: All roles require eligibility for DV (Developed Vetting) security clearance.