Senior Application Security Engineer – AI Security Lead

Brex; United States; On-site; USD 192,000 - 240,000; Full time

Job summary

Brex is seeking a Senior Application Security Engineer to identify and respond to security vulnerabilities across its platform. This role includes performing code reviews, penetration testing, and maintaining security tools. You will have the chance to work collaboratively with various engineering teams and influence the future of AI-driven security initiatives.

The ideal candidate will have over 5 years of experience in Application Security, strong communication skills, and a passion for building world-class financial services securely.

Qualifications

• Minimum 5 years of work experience in an Application Security or related role.
• Ability to demonstrate business impact through custom attack chains.
• Experience with threat modeling, developer education, and incident response.

Responsibilities

• Identify vulnerabilities and articulate risks for prioritization.
• Perform penetration testing and secure product feature design.
• Build internal tools for security automation and support secure development practices.
• Foster a culture of security excellence through technical leadership and mentorship.

Skills

Penetration testing

Finding vulnerabilities in complex systems

Security tooling development

Strong communication skills

Collaborative mindset

Education

5+ years work experience in Application Security

Tools

Python

Kotlin

gRPC

GraphQL

Kubernetes

Job description

Brex is seeking a Senior Application Security Engineer to identify and respond to security vulnerabilities across its platform. This role includes performing code reviews, penetration testing, and maintaining security tools. You will have the chance to work collaboratively with various engineering teams and influence the future of AI-driven security initiatives.

The ideal candidate will have over 5 years of experience in Application Security, strong communication skills, and a passion for building world-class financial services securely.