Staff Application & Product Security Engineer

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Staff Application & Product Security Engineer based in United States. This Staff-level individual contributor role owns application and product security across both SaaS and customer-hosted products. You will shape how security is embedded throughout the software development lifecycle, from architecture and threat modeling through release and remediation. The role combines hands-on engineering with program ownership, allowing you to establish standards, build automated guardrails, and influence security decisions across engineering teams. You will partner closely with Engineering, Product, Architecture, Cloud Security, and executive leadership to strengthen the security posture of shipped products. A major focus will be vulnerability management, secure development practices, customer-facing product security, and security enablement for developers. You will also lead emerging AI security efforts, establishing practical controls for LLM-enabled features, AI agents, and AI-assisted development workflows. This is an opportunity to make high-impact technical decisions while creating scalable security programs, automation, and processes that support a growing product organization.