Senior Application Security Engineer

Brex

Senior Application Security Engineer focusing on security vulnerabilities across the Brex platform. Collaborating with various teams to secure AI-driven financial services.

Posted 6/12/2026full-timeRemote • 🇺🇸 United StatesSenior💰 $192,000 - $240,000 per yearWebsite

Tech Stack

Tools & technologies

Python

About the role

Key responsibilities & impact

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

Requirements

What you’ll need

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

Benefits

Comp & perks

🌐 Worldwide ❌ Jobs You've Hidden ⭐️ Saved Jobs ✅ Applied Jobs ✉️ Email Alerts 👤 Account Brex Website LinkedIn All Job Openings 501 - 1000 employees Founded 2017 💳 Fintech 💸 Finance 🏢 Enterprise 💰 Series D on 2022-05 Fintech
Finance
Enterprise Brex is a financial technology company that offers modern solutions for managing expenses, banking, and finances in over 120 countries. Unlike traditional banks, Brex provides a platform with services such as corporate cards, AI-powered expense management, travel booking, bill payment, and banking and treasury services. It aims to help startups and larger enterprises control spending, automate busywork, and maximize financial resources through its innovative financial stack. With a focus on AI and automation, Brex enables companies to save time, ensure compliance, and enhance efficiency in financial operations. It provides financial products like business accounts yielding 4. 22%, and solutions tailored to various business sizes, helping finance teams maximize impact and adapt to growth stages. Senior Application Security Engineer 🔥 1 hour ago 🇺🇸 United States – Remote 💵 $192k - $240k / year ⏰ Full Time 🟠 Senior 💻 Application Engineer 🦅 H1B Visa Sponsor Python Apply Now Find Hiring Managers Customize resume + cover letter Report problem ☆ Save ☑️ Mark as applied ❌ Hide 📋 Description
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 🎯 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 Apply Now 📊 Check your resume score for this job Improve your chances of getting an interview by checking your resume score before you apply. Check Resume Score Similar Jobs Application Security Engineer 🔥 4 hours ago Virtru 51 - 200 🔒 Cybersecurity 📋 Compliance Website LinkedIn All Job Openings Application Security Engineer securing Virtru's data protection platform. Collaborating with development teams and enhancing security standards through various assessments and tools. 🇺🇸 United States – Remote 💵 $180k - $200k / year ⏰ Full Time 🟡 Mid-level 🟠 Senior 💻 Application Engineer AWS Google Cloud Platform Kubernetes Node.js SDLC Go Lead Application Security Engineer 🔥 7 hours ago phia, LLC 11 - 50 🔒 Cybersecurity 🏛️ Government 🤝 B2B Website LinkedIn All Job Openings Lead Application Security Engineer driving complex application security testing program for federal civilian client in a dynamic environment. Join a skunk-works AppSec team managing a full stack system. 🇺🇸 United States – Remote ⏰ Full Time 🟠 Senior 💻 Application Engineer Ansible AWS Cloud Docker EC2 Java Kubernetes Linux OpenShift Python Unix Field Application Engineer – Southeast Region 🔥 7 hours ago Qnity 1 - 10 🧬 Biotechnology 💊 Pharmaceuticals 🔧 Hardware Website LinkedIn All Job Openings Field Application Engineer implementing Laird solutions for OEMs in advanced electronics. Responsible for design support, customer relations, and project management across the Southeast region. 🇺🇸 United States – Remote ⏰ Full Time 🟡 Mid-level 🟠 Senior 💻 Application Engineer Senior Software Applications Engineer 🔥 8 hours ago Calix 1001 - 5000 📡 Telecommunications ☁️ SaaS 🏢 Enterprise Website LinkedIn All Job Openings Senior Software Applications Engineer developing and managing commerce systems for impactful company initiatives at Calix. Collaborating with others on stakeholder requirements and supporting key operational teams. 🇺🇸 United States – Remote 💵 $86.4k - $177.1k / year 💰 $50M Venture Round on 2009-08 ⏰ Full Time 🟠 Senior 💻 Application Engineer 🦅 H1B Visa Sponsor Node.js React Application Engineer – HVAC Applications 🔥 12 hours ago Bosch 10,000+ employees 🚀 Aerospace ⚡ Energy Website LinkedIn All Job Openings HVAC Application Engineer in a commercial product team assisting with equipment selection and application support. Engage with partners and provide technical training and software testing support. 🇺🇸 United States – Remote 💵 $85k - $105k / year 💰 Non Equity Assistance on 2018-06 ⏰ Full Time 🟡 Mid-level 🟠 Senior 💻 Application Engineer 🦅 H1B Visa Sponsor View More Application Engineer Jobs 🌐 Worldwide Built by Lior Neu-ner. I'd love to hear your feedback — Get in touch via DM or support@remoterocketship.com Search Search Jobs by country Search jobs by city Search jobs by job title Search entry-level jobs Search junior-level jobs Search senior-level jobs Search jobs by tech stack Search jobs by contract type Search remote internships Search remote part-time jobs Remote jobs Anywhere in the World Companies Hiring Anywhere in the World Companies Hiring Sales People Anywhere in the World Companies Hiring Software Engineers Anywhere in the World Resources Advice Tips for finding remote jobs Interview questions and answers Resume examples Cover letter examples Post a job Affiliates Privacy policy Terms of service Job board SEO course AI Apply Copilot OpenClaw job finder Jobs by Country Remote jobs anywhere in the world (Worldwide remote jobs) Remote jobs United States Remote jobs Australia Remote jobs Brazil Remote jobs Canada Remote jobs France Remote jobs Ireland Remote jobs Germany Remote jobs Netherlands Remote jobs Spain Remote jobs UK Popular Jobs Remote data analyst jobs Remote customer support jobs Remote executive assistant jobs Remote marketing jobs Remote product designer jobs Remote product manager jobs Remote project manager jobs Remote recruiter jobs Remote sales jobs Remote software engineer jobs Jobs by Type Remote full-time jobs Remote part-time jobs Remote contract jobs Remote internship jobs Remote entry-level jobs Remote jobs with no experience required Remote junior jobs (1-3 years of experience) Digital nomad jobs Remote jobs with no degree required Freelance remote jobs Temporary remote jobs Remote jobs hiring now Stay at home mom jobs

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Hard Skills & Tools

penetration testingSASTDASTthreat modelingincident responsePythonscripting languagesAI workflowssecure development practicesvulnerability assessment

Soft Skills

collaborative mindsetwritten communicationverbal communicationtechnical leadershipmentorshiplearning sessions