Senior Application Security Engineer

Brex is looking for a Senior Application Security Engineer to focus on finding and responding to security vulnerabilities across the Brex platform. The role involves performing code reviews, design reviews, penetration testing, and vulnerability management. The ideal candidate has a strong background and interest in penetration testing, with experience in finding vulnerabilities in complex systems and crafting exploits to demonstrate business impact.

Requirements

• 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 a wide range of secure development activities including— threat modeling, developer education, and incident response
• Knowledge of Python, scripting languages, and AI/agentic workflows to automate tasks, build tools and improve productivity
• Collaborative mindset paired with strong written and verbal communication skills

Benefits

• Up to four weeks per year of fully remote work
• Hybrid work environment with a minimum of three coordinated days in the office per week
• Generous compensation package, including a starting base pay of $192,000 - $240,000 CAD, equity, and other forms of compensation