Staff Application 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 Security Engineer based in the United States.

This is a senior, hands-on engineering role focused on building and scaling modern application security capabilities across a complex enterprise environment.
You will combine deep Application Security expertise with strong software engineering skills to turn security strategy into practical, scalable solutions.
The role spans secure software development, vulnerability management, software supply chain security, cloud-native environments, and developer-facing security tooling.
You will build automation, integrations, APIs, secure-by-default engineering patterns, and AI security guardrails that make secure development easier and more efficient.
Working closely with Cloud Security, Platform Engineering, Software Engineering, and architecture teams, you will influence security practices across the development lifecycle.
The position also offers an opportunity to shape emerging approaches to AI-assisted development and agentic workflows from a security perspective.
As a technical leader, you will mentor engineers, solve complex security challenges, and help establish scalable engineering practices across the organization.