Senior Application Security Engineer
Why join us Brex is the intelligent finance platform that enables companies to spend smarter and move faster in more than 200 markets. By combining global corporate cards and banking with intuitive spend management, bill pay, and travel software, Brex enables founders and finance teams to accelerate operations, gain re
What this role actually needs.
Why join us Brex is the intelligent finance platform that enables companies to spend smarter and move faster in more than 200 markets. By combining global corporate cards and banking with intuitive spend management, bill pay, and travel software, Brex enables founders and finance teams to accelerate operations, gain re 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 - 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 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 - Proficiency with Kotlin, gRPC, GraphQL, Kubernetes Company context: Brex is the spend platform combining corporate cards, expense management, banking, and bill pay for growing companies.
Day-to-day expectations
Brex lists these responsibilities for the Senior Application Security Engineer role.
- 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
- 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
What a strong candidate brings
These requirements are extracted from the source listing and normalized for UpJobz readers.
- 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
- Proficiency with Kotlin, gRPC, GraphQL, Kubernetes
Why this listing is more than a copied job post.
Senior Application Security Engineer is framed against UpJobz source checks, country scope, compensation visibility, and work-authorization signals so candidates can make a faster go/no-go decision.
United States tech market
United States roles on UpJobz are filtered for high-tech relevance, source freshness, and actionable employer detail before they are allowed into SEO surfaces.
Compensation read
The employer source does not expose a reliable salary range, so candidates should ask for compensation early instead of waiting until late-stage interviews.
Work authorization read
Current extracted signal: Open to TN, H-1B, and OPT candidates already in the United States. UpJobz treats this as a search signal, not legal advice, and links visa-sensitive roles back to the relevant visa hub where possible.
Location read
On-site roles in New York City should be compared against commute, local salary bands, and nearby employer demand.
Browse similar jobs
Turn this listing into an application plan.
This is the first pass at the premium UpJobz layer: a fast brief that helps serious applicants move with more clarity.
Next moves
- Tailor your resume around ai and research instead of sending a generic application.
- Use the first two bullets of your application to connect your background directly to senior application security engineer is a high-signal on-site role in new york city, and it is most realistic for open to tn, h-1b, and opt candidates already in the united states.
- Open the role quickly if it fits and bookmark three similar jobs before you leave the page.
Interview themes
Watchouts
- Compensation is hidden, so get range clarity in the first recruiter conversation.
- Use open to tn, h-1b, and opt candidates already in the united states as part of your positioning so the recruiter does not have to infer it.
- Show concrete examples of succeeding in on-site environments.
Keywords to match against your background
Use these terms to decide whether your resume, portfolio, and recent projects line up with the role.
Apply through the employer source
Open the source listing from brex.com, confirm the role is still active, then apply on the employer or ATS page.
Source: brex.com · Source ID: 8426273002 · Confidence: 88/100 · Last checked: May 7, 2026
How UpJobz verifies job sourcesContinue browsing tech jobs