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Senior Application Security Engineer

2 months, 2 weeks ago
Anywhere
Full-time
Senior
Application Security Engineer
Cybersecurity
AWS GraphQL gRPC Kotlin Kubernetes Penetration Testing Python
Apply Now
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
View All Jobs 14

Description

  • Identify vulnerabilities, demonstrate business impact, and communicate risk to drive prioritization.
  • Perform penetration testing and design reviews to uncover insecure designs and security issues.
  • Work with engineering and product teams to design secure product features.
  • Build, maintain, and improve internal security tools to automate security efforts.
  • Perform SAST and DAST testing across the Brex platform.
  • Support and improve secure development practices and developer workflows.
  • Collaborate with Security Operations, GRC, Product Security, Front End Platform, and IT Infrastructure teams.
  • Contribute technical leadership, learning sessions, and mentorship to strengthen security culture.
  • Help secure AI and agentic features by identifying attack vectors and partnering on safe implementation.

Requirements

  • 5+ years of 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 for automation and tool building.
  • Strong written and verbal communication skills with a collaborative mindset.
  • Strong background and interest in penetration testing.
  • Preferred: proficiency with Kotlin, gRPC, GraphQL, and Kubernetes.
  • Preferred: previous experience as a software engineer.
  • Preferred: consultancy experience performing web application security reviews.
  • Preferred: experience securing distributed systems in AWS and other cloud environments.
  • Preferred: experience pentesting and securing agentic features and systems.
  • Preferred: contributions to the technical community such as open source, research, mentorship, blogging, CVEs, or presentations.
  • Preferred: experience submitting to bug bounty programs or responsible disclosure programs.

Benefits

  • Expected salary range of $192,000 to $240,000.
  • Equity and other forms of compensation may be provided as part of the total package.
  • Opportunity to work on AI-driven financial services and early-stage AI security initiatives.
  • Access to tools, resources, and support to grow your career.
  • Inclusive culture and a diverse team environment.
  • Work with highly collaborative engineering and security teams across the company.

Interested in this position?

Apply directly on the company website

Apply Now

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