• Own and evolve our AWS infrastructure across compute, networking, storage, and managed services • Design and maintain infrastructure that supports high availability, predictable performance, and financial correctness • Lead platform-level architectural decisions, including service migrations and runtime changes (e.g., Redis → Valkey, EKS → ECS/Fargate) • Ensure infrastructure choices align with reliability, cost, and operational simplicity—not just trend adoption • Design and maintain deployment pipelines that are safe, repeatable, and observable • Own system reliability through capacity planning, failure modeling, and controlled change management • Lead incident response and root-cause analysis for infrastructure-level failures • Participate in on-call rotations and continuously improve operational ergonomics • Build and maintain strong observability across infrastructure and services (metrics, logs, tracing, alerting) • Ensure secure configuration of AWS resources, IAM policies, secrets management, and network boundaries • Proactively identify infrastructure risks related to scale, cost, or security and address them before they become incidents • Partner closely with application engineers to ensure platform constraints and capabilities are well understood • Drive infrastructure changes through hands-on implementation • Establish standards and best practices for infrastructure, deployment, and operations as the team grows • Mentor other platform engineers and help raise the overall operational maturity of the organization