Translates operational requirements into system-level designs and testable requirements; develops and maintains core SE artifacts (requirements, traceability, specifications, diagrams, test plans, baselines); leads integration and system-level testing across applications, data, infrastructure, and security; and drives transition to operations. Design, build, and maintain CI/CD pipelines (e.g., AWS CodePipeline/CodeBuild, Jenkins, GitLab CI, GitHub Actions, Azure DevOps) with integrated security scanning, compliance checks, approvals, and testing.