About the job
Why join us
Brex is revolutionizing the way businesses manage their finances with our AI-driven spend platform. We empower companies to make confident spending decisions through integrated corporate cards, banking solutions, and global payment systems, alongside innovative software for travel and expense management. Trusted by thousands of businesses ranging from startups to large enterprises — including DoorDash, Flexport, and Compass — Brex enables proactive spending control, cost reduction, and enhanced efficiency on a global scale.
Joining Brex means pushing your boundaries, challenging conventional thinking, and collaborating with some of the brightest minds in the tech industry. We are dedicated to fostering a diverse and inclusive workplace culture, believing that your potential should only be limited by your aspirations. We provide the tools, resources, and support necessary for you to advance your career.
Engineering at Brex
At Brex, engineering is all about creating scalable systems with intention and speed. Our teams encompass Software, Data, Security, and IT, operating with high autonomy and deep collaboration. We tackle complex technical challenges, take ownership of our results, and strive for excellence at every stage — from architecture to deployment. Here, engineering is treated as a craft, and builders are nurtured into leaders.
Your Role
As a Senior Application Security Engineer, your primary responsibility will be identifying and addressing security vulnerabilities across the Brex platform. This role involves conducting code reviews, design assessments, penetration testing, and vulnerability management. You will develop and maintain tools for static and dynamic testing of the Brex platform, as well as tools that facilitate secure developer workflows. As part of our broader Financial Scale organization, you will collaborate closely with Security Operations, GRC, Product Security, Front End Platform, and IT Infrastructure teams.
We seek candidates with a strong foundation and enthusiasm for penetration testing. You should possess a proven track record of discovering vulnerabilities in complex systems and crafting exploits to demonstrate their business impact. This position is highly collaborative, offering the opportunity to engage with every engineering team at Brex. We value diversity and expect you to thrive in a variety of backgrounds, roles, and needs. Building a world-class financial service requires world-class security.
Brex is at the forefront of the next wave of AI-driven financial services for dynamic, high-impact companies like Coinbase, Robinhood, and Anthropic. As we integrate AI throughout our product suite, you will play a pivotal role in shaping and influencing these developments.
