Brex · 2 months ago
Senior Application Security Engineer
Seattle, Washington, United States
Full-time
Onsite
Senior Level
$192K/yr - $240K/yr
5+ years expBrex is an AI-powered spend platform that helps companies manage their corporate expenses. The Senior Application Security Engineer will focus on identifying and responding to security vulnerabilities across the Brex platform, performing tasks such as code reviews, penetration testing, and vulnerability management.
BankingCredit CardsFinancial ServicesFinTech
Responsibilities
Identifying vulnerabilities, demonstrating business impact, and articulating the risk of specific vulnerabilities to drive prioritization efforts
Perform penetration testing and design reviews, looking for vulnerabilities and insecure designs, work with engineering and product to design secure product features
Maintain and build internal tools to automate security efforts, perform SAST and DAST testing of the Brex platform, and support secure development practices
Build and contribute to a culture of collaborative security excellence through technical leadership, learning sessions, and mentorship within the team and wider organization
Qualification
Required
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
Preferred
Proficiency with Kotlin, gRPC, GraphQL, Kubernetes
Previous experience as a software engineer
Consultancy experience performing web application security reviews
Experience with securing distributed systems in AWS and cloud environments
Experience with pentesting and securing agentic features and systems
Contributions to the wider technical community— open source, public research, mentorship, community organizing, blogging, CVEs, presentations, etc
Experience submitting to bug bounty programs or responsible disclosure programs
Benefits
Up to four weeks per year of fully remote work
Company
Brex
Brex is a financial service and technology company that provides business credit cards and cash management accounts.
1001-5000 employees
H1B Sponsorship
Brex has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (32)
2024 (50)
2023 (53)
2022 (65)
2021 (70)
2020 (37)
Funding
Current Stage
Late StageTotal Funding
$1.7BKey Investors
CitiTiger Global ManagementDST Global
2025-01-13Debt Financing· $235M
2023-07-25Series Unknown
2022-05-18Series D
Leadership Team
Pedro Franceschi
Founder and CEO
James Reggio
Chief Technology Officer
Recent News
2026-01-05
2025-12-24
2025-12-12
Company data provided by crunchbase