Design, implement, and manage cloud infrastructure using IaC tools (Terraform, AWS CloudFormation, Ansible). Design, build, and maintain scalable CI/CD pipelines (CircleCI, GitHub Actions). Implement and maintain observability tooling (Prometheus, Grafana, Datadog) and lead incident response. Develop reusable infrastructure modules, automation frameworks, and patterns. Build and scale infrastructure on AWS for high-availability systems. Apply infrastructure-level security best practices (IAM, encryption, network segmentation). Work cross-functionally and mentor team members. Build and support self-service infrastructure capabilities for engineering teams.