Principal Platform Engineer

Principal Platform Engineer | AWS | Kubernetes | GitOps - City of London - Hybrid (2 days in the office) Salary: £110,000 - £140,000 For engineers who want to shape the platform — not just run it. We’re working with a well-funded UK fintech entering an exciting phase of commercial growth, and we’re looking for a Principal Platform Engineer to help define what comes next. This is a genuine hands-on technical leadership role. You’ll have the autonomy to challenge the existing platform, make architectural decisions, build better patterns and raise the engineering bar. The stack: AWS • EKS • Kubernetes • Terraform • Argo CD • GitHub Actions • Helm • Grafana • VictoriaMetrics You’ll be tackling: Platform architecture and technical directionKubernetes and cloud hardeningGitOps and deployment automationSecurity, resilience and disaster recoveryObservability and production readinessRepeatable customer environment provisioningMentoring engineers and establishing engineering standardsWe’re looking for someone with deep production experience across AWS and Kubernetes, strong engineering judgement and a track record of building platforms that are secure, resilient and scalable.Fintech, regulated environments or SaaS experience is a strong plus. It’s an opportunity to get your hands on the platform, influence the technology and help build the foundations of a growing financial technology business. Interested? DM me for a confidential conversation. For immediate enquiries please contact Harriet Lamplugh de Smith at Harrington Starr on harriet@harringtonstarr.com #PrincipalEngineer #PlatformEngineering #AWS #Kubernetes #EKS #Terraform #GitOps #ArgoCD #SRE #CloudEngineering #FinTech #Hiring