Senior Application Security Engineer

10 hours, 17 minutes ago
Full-time
Senior
Cybersecurity
Brex

Brex

Brex is an AI-powered spend platform that offers integrated corporate cards, expenses, travel, and payments in over 100 countries. With a unified platform for corporate cards, expense management, reimbursements, travel, business accounts, and bill pay,...

Diversified Financial Services
1K-5K
Founded 2017
$1800M raised

Description

  • Identify vulnerabilities across the Brex platform, demonstrate business impact, and communicate risk to drive prioritization.
  • Perform penetration testing and design reviews to find vulnerabilities and insecure designs.
  • Partner with engineering and product teams to design secure product features.
  • Build and maintain internal tools that automate security efforts and support secure development workflows.
  • Perform static and dynamic application security testing, including SAST and DAST.
  • Contribute technical leadership, learning sessions, and mentorship to strengthen security culture across the organization.
  • Collaborate closely with Security Operations, GRC, Product Security, Front End Platform, and IT Infrastructure teams.
  • Help secure emerging AI and agentic features by identifying attack vectors and partnering on trustworthy implementations.

Requirements

  • 5+ years of work experience in Application Security or a related role.
  • Ability to find vulnerabilities in complex systems and demonstrate business impact through custom attack chains.
  • Experience with secure development activities such as threat modeling, developer education, and incident response.
  • Knowledge of Python, scripting languages, and AI/agentic workflows to automate tasks and build tools.
  • Strong written and verbal communication skills and a collaborative mindset.
  • Bonus: proficiency with Kotlin, gRPC, GraphQL, and Kubernetes.
  • Bonus: previous experience as a software engineer.
  • Bonus: consultancy experience performing web application security reviews.
  • Bonus: experience securing distributed systems in AWS and cloud environments.
  • Bonus: experience pentesting and securing agentic features and systems.
  • Bonus: contributions to the technical community such as open source, public research, mentorship, blogging, CVEs, or presentations.
  • Bonus: experience submitting to bug bounty programs or responsible disclosure programs.

Benefits

  • Expected base salary range of $192,000 to $240,000.
  • Equity and other forms of compensation may be included in the total package.
  • Opportunity to work on AI-driven financial services and influence new security initiatives.
  • High-autonomy engineering environment with deep collaboration across teams.
  • Resources and support to grow your career in a diverse and inclusive culture.

Interested in this position?

Apply directly on the company website

Apply Now

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