Reporting to the Cybersecurity Lead, the Senior DevSecOps Engineer will design, deploy, and secure scalable AWS + Azure environments with a strong focus on Infrastructure as Code (IaC). The purpose of this role is to build secure cloud-native infrastructure from the ground up, operationalize AWS/Azure services, and automate the reliability and security of mission-critical systems. You will embed security-by-design across the SDLC by implementing secure CI/CD pipelines with automated testing, policy controls, and supply-chain protections (SBOMs, signed artifacts, provenance), while centralizing security telemetry into Microsoft Defender for Cloud for unified posture management, threat detection, and compliance. The role also secures cloud infrastructure, data, and key management using AWS KMS and Azure Key Vault, hardens AKS/EKS with policy-as-code (OPA/Gatekeeper) and runtime protections, and extends these controls to AI/LLM development and inference platforms including AWS Bedrock, AI Foundry, and vLLM.