Senior Site Reliability Engineer

TwinStream Limited; Cheltenham; Hybrid; GBP 60,000 - 90,000; Full time

Benefits offered by this job

Pension Plan (8%)

Private Medical Care

Annual Training Budget £1,000

Flexible Working

EV Salary Sacrifice

25 days + BH

Team Events

Job summary

The role offers remote work with eventual onsite requirements in Cheltenham; eligibility for DV clearance is highlighted and there is a strong emphasis on automation, monitoring and end‑to‑end infrastructure responsibilities.

Qualifications

• Experience in Site Reliability Engineering, DevOps, or similar roles.
• Strong knowledge of cloud platforms (AWS/Azure/GCP).
• Experience with infrastructure as code and configuration management tools (Terraform, Ansible).

Responsibilities

• Designing and maintaining reliable, scalable infrastructure across physical and virtual environments.
• Monitoring system performance and proactively resolving issues.
• Automating processes to improve efficiency and consistency with tools like Ansible.
• Collaborating with engineers and stakeholders across the business.
• Supporting continuous improvement of systems, tools, and practices.
• Operating across the full infrastructure stack from bare metal to virtualised deployments.

Skills

Site Reliability

DevOps

Cloud Platforms

Terraform

Ansible

CI/CD

Monitoring

Tools

Terraform

Ansible

CI/CD Tools

Monitoring Tools

Job description

Location: The role is fully remote initially, but we may put you through DV clearance and, once cleared, ask you to work onsite in Cheltenham 2–3 days a week at some point in the future.

Security Clearance: Eligible for SC and/or DV Clearance

The Role

As a Site Reliability Engineer, you’ll play a key role in designing, building, and maintaining resilient systems that support critical operations. You’ll work closely with cross-functional teams to ensure our platforms are scalable, secure, and reliable.

This is a hands‑on role where you’ll have the opportunity to influence technical direction, improve system performance, and contribute to meaningful projects.

What You’ll Be Doing

• Designing and maintaining reliable, scalable physical and virtual infrastructure
• Monitoring system performance and proactively resolving issues
• Automating processes using tools such as Ansible to improve efficiency and consistency
• Collaborating with engineers and stakeholders across the business
• Supporting continuous improvement of systems, tools, and practices
• Operating across the full infrastructure stack, from bare metal systems through to virtualised deployments and the applications running within them.

What We’re Looking For

We recognise that no one ticks every box. If your experience aligns with most of the below, we’d love to hear from you:

• Experience in Site Reliability Engineering, DevOps, or similar roles
• Strong knowledge of cloud platforms (e.g. AWS, Azure, or GCP)
• Experience with infrastructure as code and configuration management tools (e.g. Terraform, Ansible)
• Familiarity with CI/CD pipelines and automation practices
• Understanding of monitoring, logging, and alerting systems
• A collaborative mindset and a passion for problem‑solving

Company Benefits

There are many great reasons to join our team!

• Pension Plan - Secure your future with our competitive pension plan that offers an 8% employer contribution.
• Private Medical Healthcare - Your health and well-being are our top priorities. Enjoy comprehensive private medical healthcare, which includes dental and optical care for you and your family.
• Learning and Development - Your career is in your hands. We empower you to take charge of your own development, giving you the autonomy to shape your growth. To support this, everyone receives an annual training budget of £1,000.
• Flexible Working - We understand the importance of balancing work and life. Flexibility is not just a policy for us; it is part of our culture. We are passionate about helping you seamlessly integrate work with your home life.
• Electric Vehicle Scheme - Drive sustainability forward with our electric vehicle leasing scheme. You can take advantage of this initiative through a convenient salary sacrifice program.
• Holidays - Enjoy annual leave of 25 days, plus bank holidays, allowing you to recharge and spend time on what matters most.
• Team Events - We love celebrating our achievements! In addition to our quarterly meetings, you can look forward to our Christmas and summer parties—opportunities to relax, reflect, and have fun as a team.