Ensure product security across the development lifecycle by advising engineering on secure coding, SSDLC/CI-CD, application security tooling (SAST/SCA/IAST/CNAPP), threat modeling (STRIDE/PASTA/MAESTRO), security design reviews, vulnerability remediation, and compliance with OWASP/CIS/PCI-DSS/SOC 2/FedRAMP/NIST. Partner with architecture, audit, and leadership, provide training and executive updates, and mentor teams to embed secure-by-design practices.