• Own and evolve our AWS infrastructure using Terraform and Pulumi Cloud - treating infrastructure as a product that engineering teams depend on. • Design and maintain internal developer tooling and libraries that standardize how we build and ship - code generation, shared SDKs, data access patterns, and service scaffolding. • Create and maintain golden paths for common workflows (new service setup, background jobs, event streams, APIs) so teams can ship quickly with built-in security and observability (and consistent defaults across services). • Build and maintain CI/CD pipelines and per-PR ephemeral environments that make deploying feel easy and safe. • Drive reliability through SLOs, auto-scaling, incident response, and postmortems - and build systems that make the next incident less likely. • Create observability tooling and shared instrumentation libraries that give engineers real-time insight into their services. • Enforce security best practices across IAM, secrets management, encryption, audit logging, and DDoS protection. • Own the reliability and performance of our data platform (Aurora PostgreSQL) - provisioning, backups, failover, and tuning - and build tooling that makes safe usage the default. • Reduce toil through automation and self-service tooling so engineers can move fast without waiting on the platform. • Contribute to architecture decisions and documentation, and participate in on-call rotation (shared by the whole engineering team).