5+ years designing and operating cloud infrastructure in production environments Deep experience with AWS (e.g., EC2, RDS, ECS/EKS, networking, IAM) Strong proficiency with Terraform or CloudFormation Hands-on experience with Docker and Kubernetes Experience maintaining and tuning PostgreSQL or similar systems in AWS RDS Familiarity with CI/CD systems (Buildkite, Jenkins, or GitHub Actions) Strong knowledge of observability tools (Datadog, CloudWatch, or Prometheus)