Senior / Principal Platform Engineer

About the job Senior / Principal Platform Engineer Location: Remote-first (UK-based) Salary: Up to £125,000 + benefits About the Company Join a growth-stage technology company investing in the next phase of their engineering and platform capability. As they scale, they're building out a dedicated platform function to support secure, reliable, and developer-friendly delivery across the organisation. Role Overview This is an opportunity for a lead/principal-level Platform Engineer to help build a secure, reliable, developer-friendly platform function that enables engineering teams to deliver quickly and safely. You'll start as a hands-on senior technical contributor, laying the foundations for a future platform engineering capability, with the role expected to evolve as they scale. This is a platform enablement role, not traditional ops support — focused on automation, operational maturity, resilience, and developer experience. Key Responsibilities Design, build, and maintain scalable cloud infrastructure and platform tooling Improve reliability, observability, deployment automation, and CI/CD pipelines Build reusable platform capabilities (e.g. event streaming, storage/provisioning patterns, secrets management) Improve developer experience through self-service tooling, golden paths, and reduced operational friction Partner with security/engineering leadership to operationalise RBAC, access governance, and compliance requirements Support incident response, monitoring, and operational SLAs Mentor engineers and help shape long-term platform strategy and standards Required Experience & Skills Strong background in platform engineering, DevOps, SRE, or cloud infrastructure Deep experience with AWS Strong infrastructure-as-code skills (Terraform, Pulumi, CloudFormation, etc.) Experience with CI/CD, Linux, containerisation, and Kubernetes Experience with distributed systems, event-driven architecture, or streaming platforms Working knowledge of RBAC, IAM, secrets management, and operational security practices, ideally in a regulated environment Strong automation/scripting ability and systems-thinking approach Comfortable operating in a scaling, growth-stage environment Key Competencies Automation-first, ownership-driven mindset Strong communication and cross-team collaboration Calm under operational pressure Ability to simplify complexity and improve engineering flow We are an equal opportunities employer and welcome applications from all suitably qualified persons regardless of their race, sex, disability, religion/belief, sexual orientation or age.