Site Reliability Engineer

Twinstream Limited; Gloucester; Hybrid; GBP 65,000 - 95,000; Full time

Job summary

A technology firm in Gloucester is seeking a Site Reliability Engineer to enhance infrastructure reliability and performance. The ideal candidate will have strong experience with Azure and CI/CD pipelines. The role offers a flexible working culture of 3 days on site and 2 remote, competitive salary, and comprehensive benefits including private medical healthcare and a pension scheme.

Benefits

8% employer pension contribution

Private medical healthcare

Learning and development budget

Electric Vehicle salary sacrifice scheme

28 days holiday

Team events and celebrations

Cycle to work scheme

Qualifications

• Proven experience with Azure and modern infrastructure management tools.
• Strong hands-on experience with Terraform, Docker, and Kubernetes.
• Deep understanding of CI/CD pipelines and monitoring tools.
• Confident with Linux, SQL, and network security protocols.
• Familiar with AWS services.

Responsibilities

• Drive reliability, performance, and scalability across systems.
• Automate toil and evolve monitoring capabilities.
• Build and refine CI/CD pipelines for seamless delivery.
• Strengthen observability to prevent issues proactively.
• Evaluate cutting-edge tools and cloud solutions.

Skills

Azure

Terraform

Docker

Kubernetes

Linux

SQL

Network security protocols

Tools

Ansible

Chef

Jenkins

Grafana

Prometheus

RabbitMQ

Job description

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.