Site Reliability Engineer

Salary: £43,000 - 83,000 per year

Requirements:

• Experience in managing a public cloud, with Azure advantageous
• Experience in Azure DevOps, Octopus, Flux, or other CI/CD tools
• Experience with Linux and Microsoft systems
• Excellent communication skills and ability to collaborate with multiple teams in an agile environment
• Proficient in contributing to IaC technologies, including writing, managing, and optimising infrastructure with tools such as Terraform and Pulumi
• Experience working with a cloud monitoring solution, with DataDog advantageous
• Experience with Kubernetes and Docker
• Experience in at least one scripting language, such as Python, PowerShell, or Go

Responsibilities:

• Help ensure our platforms are fast, reliable, and scalable
• Design, build, and monitor systems, and prevent issues before they happen
• Use SLAs, SLIs, and SLOs to guide feature launches while maintaining dependable services
• Manage and automate Azure, Datadog, NGINX, and Cloudflare
• Develop and monitor Kubernetes and Serverless resources
• Maintain infrastructure code with Terraform and CRDs / Crossplane
• Improve systems, processes, and technologies, and consult stakeholders to enhance platform performance
• Get involved in new application architecture and design processes
• Design solutions to reduce toil, automate repetitive tasks, and streamline workflows
• Create SLIs and SLOs and increase application visibility
• Align with the Product team on SLAs and core service objectives
• Collaborate with Platform Engineers for automated solutions and pipelines
• Enhance user experience through infrastructure and pipeline optimisation
• Support CI/CD tools such as Azure DevOps, Octopus Deploy, and Flux to streamline software delivery
• Lead incident troubleshooting to safeguard customer experience

Technologies:

• Azure
• CI/CD
• Cloud
• Datadog
• DevOps
• Docker
• Embedded
• Support
• Kubernetes
• Linux
• Nginx
• PowerShell
• Pulumi
• Python
• Serverless
• Terraform

More:

We are Capital on Tap, a financial platform built to support small businesses. We offer a best-in-class business credit card, an SME-focused spend management platform, a savings product, and a growing suite of tools and financial products designed to make running a small business easier. We are a profitable company with 1,000+ employees, 20bn in annual card spend, 200,000+ customers, and 17,000+ Trustpilot reviews averaging 4.7 stars. This SRE role is based in London, Old Street, with 2 days in the office. We run a hybrid embedded SRE model and work closely with teams across the business. Our office includes a pool table, arcade machine, beer tap, and office dogs, and we offer private healthcare, worldwide travel insurance, anniversary rewards, pension matching, 28 days holiday plus bank holidays, an annual learning and wellbeing budget, enhanced parental leave, cycle to work, season ticket loan, free therapy sessions, dog-friendly offices, and free drinks and snacks.

last updated 35 week of 2026