Senior Site Reliability Engineer

Salary: £40,000 - 70,000 per year

Requirements:

• Previous experience as a Site Reliability Engineer or similar (cloud, infrastructure, DevOps or platform engineering) within a customer-facing environment, e.g. SaaS or MSP
• Strong hands-on experience with both Azure and on-premise virtual machines
• Experience with Infrastructure as Code / Terraform
• Experience with container orchestration such as Kubernetes or AKS
• Experience with monitoring and observability tooling such as Prometheus, Grafana, Datadog, or Azure Monitor
• Ability to implement new processes and tools, ensuring wider development and support teams adopt new ways of working
• Ability to communicate across internal teams and external customers
• Skilled in networking across both cloud (Azure) and on-premise environments
• Windows or Linux systems administration skills, with Linux preferred
• Previous use of AI tools to enhance efficiency

Responsibilities:

• Utilise technologies such as Terraform and Kubernetes to manage, provision, and configure servers and networks, and automate application lifecycles
• Regularly use Datadog and other observability tools for application performance monitoring
• Implement new ways of working, helping to shape how we respond to and recover from incidents
• Take ownership of incident resolutions
• Actively drive down key reliability metrics such as MTTR, incident frequency, and on-call toil by evaluating key incidents
• Work on an on-call rota, ensuring we are available to respond to incidents during this time
• Identify areas for automation and help implement changes that raise the bar for reliability

Technologies:

• AI
• Azure
• Cloud
• Datadog
• DevOps
• Grafana
• Support
• Kubernetes
• Linux
• Prometheus
• Terraform
• Windows

More:

We are a well-established B2B SaaS company going through a significant platform transformation, and we are hiring a Senior Site Reliability Engineer to build stability, respond to live incidents, and assist with system upkeep. This role will also play a key part in implementing and adopting new tooling and processes across the wider transformation. It is a genuine opportunity to own and operate how our cloud function works, with the potential to progress into a team lead position as our team grows. The role is based in Milton Keynes, with two days on site each week, and offers a salary of up to 75,000 plus bonus and on-call allowance.

last updated 40 week of 2026