Designs and improves Jenkins-based CI/CD pipelines, Groovy shared libraries, build systems, automated testing, artifact management, deployment automation, validation, and rollback. Builds secure AWS infrastructure with CloudFormation or Terraform and supports Docker-based ECS/Fargate deployments. Troubleshoots software, cloud, networking, and deployment issues; improves observability, reliability, developer self-service, and operational readiness. Partners with engineering, QA, SRE, security, and architecture teams while leading technical improvements and participating in rotating on-call support.