Staff Application Security Engineer
Core
Define technical vision and long-term security architecture for the Brex platform, serving as the technical leader for the Application Security team while securing novel AI/ML and agentic workflows.
Role type
Staff Application Security Engineer (AI/ML focus)
Builds
Secure product lifecycle, vulnerability management programs, and AI-driven financial services
Domain
Fintech, AI/ML security, Cloud-native infrastructure
Deliverable
production ML models | infrastructure
Required skills
Offensive and defensive application security, AI security (LLM gateways, prompt injection, adversarial AI), threat modeling, cloud-native container security, Python/Go, systems thinking
Preferred skills
Team scaling, distributed systems security, open source contributions, bug bounty experience, AI security research
Technologies
AWS, Kubernetes, Python, Go, gRPC, GraphQL
Responsibilities
Lead technical vision and strategic roadmap for the Application Security team; Establish technical standards and secure defaults across the engineering organization; Architect and secure novel AI/ML and agentic workflows; Mentor and coach engineers within the team and across the broader organization; Drive proactive vulnerability discovery and offensive security testing strategies; Partner with Product Platform, Cloud Infrastructure, and Data engineering teams to ensure core primitives are secure by default
Seniority
Staff, technical leadership & mentorship
