Site Reliability Engineer (H/F)

Senior / Staff Site Reliability Engineer | £136k–£180k + equity | Remote Europe or London The platform runs AI agents and background workflows in production at massive scale handling hundreds of millions of executions per month on infrastructure they run themselves. No engineering managers. Hardening multi-tenant sandbox isolation, secrets handling, network policy, and supply chain security SLOs, runbooks, blameless postmortems, paging hygiene Strong with in TypeScript and/or Go the codebase is TypeScript-heavy with Go emerging as a second language. Performance and scaling instincts you've chased real bottlenecks across app, database, and infra layers Postgres and Redis under load, AWS strongly preferred