stackone - Senior Platform Engineer
Requirements
• 4+ years in platform, infrastructure, SRE, or DevOps, with hands-on AWS at scale: ECS/Fargate, RDS/Aurora, Lambda, networking, IAM, KMS. • Deep IaC ability: Terraform and/or AWS CDK, comfortable owning modules and patterns other teams build on. • Strong CI/CD and monorepo build experience: caching and incremental/affected-only test execution. You've made a slow pipeline fast. • Strong coding ability in TypeScript, Python, or Go. You build tooling, not just YAML and configs. • Containers in production (Docker); Kubernetes a plus. • Security-minded: you bake secure defaults into pipelines and repo templates and enjoy partnering with security rather than routing around it. • A clear writer: you produce docs and runbooks that both internal engineers and external customers can follow. • You own work end-to-end (scope, ship, measure) and automate instead of running manual checklists. • (Preferred) Experience shipping software into customers' own cloud or on-prem (BYOC / self-hosted distribution), or with a platform like Nuon, Replicated, or Omnistrate. • (Preferred) Multi-cloud (GCP or Azure) IaC, and exposure to Temporal, Kafka/MSK, ClickHouse, or OpenSearch. • We're pragmatic about tooling. Today's stack includes: • Cloud & infra: AWS (ECS Fargate, Aurora Postgres, ElastiCache, MSK, OpenSearch, Lambda, S3, KMS, CloudFront, WAF), Cloudflare (Workers, WAF) • IaC: AWS CDK today, migrating to Terraform • Data & messaging: Postgres, Redis, Kafka, OpenSearch, ClickHouse • CI/CD: GitHub Actions • Observability & analytics: Datadog, Sentry, Metabase • Languages: TypeScript (Node.js), Python
Responsibilities
• Own our infrastructure at scale: the AWS estate today (ECS Fargate, Aurora, ElastiCache, MSK, OpenSearch, Lambda, KMS) and the AWS CDK to Terraform migration. Keep it reliable, observable, and cost-aware. • Build out our deployment pipeline and test tooling as we consolidate toward a monorepo: the CI/CD that ships every service, plus an automated end-to-end testing harness with incremental (affected-only) testing that stays fast as we grow. • Own how we deploy into customers' own clouds (self-hosted / BYOC): the Terraform modules, container images, runbooks, and documentation for both internal teams and customers. • Build the release and upgrade path for self-hosted customers: versioned, signed releases, a supported-version policy, and a call-home for usage and version reporting. • Set the standard for new repositories: partner with the Security Engineer and tech leads to define how new projects (customer-facing product, internal tools, and vibe-coded prototypes alike) get deployed and secured from day one. Templates, golden paths, and guardrails, not gatekeeping. • Raise reliability: SLOs, observability, and incident response for the platform. Make the system easy to operate when something breaks at 3am. • Treat infrastructure as a product: paved roads and self-serve tooling so product engineers ship without waiting on you. • Use LLMs and agents to accelerate platform work (IaC generation, test scaffolding, runbook drafting) with guardrails you trust.
Benefits
• Meaningful share options (EMI) • 25 days holiday + 1 additional day per year of tenure • Private health insurance, including dental & optical • £15/day London office lunch budget, up to £120/month • £1,000 home office setup + £500/year top-up • Annual team offsite to sunny spots • Join one of Europe's fastest-growing startups • Work with a veteran team of ex-Google, Microsoft, Oracle, Coinbase, JP Morgan and more • Health, fitness and gift card discounts; Cycle2Work and Electric Cars scheme • London (hybrid, ~2 days/week) preferred; open to remote within the UK • We believe diversity drives innovation. We encourage individuals from all backgrounds to apply. As an equal-opportunity employer, we celebrate diversity and are committed to creating an inclusive environment for all employees.
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