Senior Application Security Engineer
$192,000–$240,000 year
Remote · United States or New York City, New York, United States
Job Summary
Senior Application Security Engineer responsible for identifying vulnerabilities across Brex platform, performing code/design reviews, penetration testing, and building tooling for SAST/DAST; cross-functional collaboration with Security Operations, GRC, Product Security, Front End Platform, IT Infrastructure; focus on securing AI-enabled features and agentic workflows; opportunities to influence AI security roadmap and secure development practices across teams.
Required Qualifications
- 5+ years work experience in an Application Security or related role
- Ability to find vulnerabilities in complex systems, demonstrating business impact through custom attack chains
- Experience with secure development activities including threat modeling, developer education, incident response
- Knowledge of Python, scripting languages, and AI/agentic workflows to automate tasks, build tools and improve productivity
- Collaborative mindset with strong written and verbal communication skills
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