Senior Product Security Engineer, Application Security (Remote)

CrowdStrike Holdings, Inc.; California (MO); Hybrid; USD 160,000 - 250,000; Full time

Benefits offered by this job

Competitive compensation

Wellness programs

Paid time off

Professional development

Job summary

CrowdStrike is seeking a Senior Application Security Engineer to secure our web applications and protect customers from advanced threats. You will dive into code, identify defects, and drive fixes across engineering teams.

You’ll build security into the SDLC, develop threat models, and automate security tasks while collaborating with product engineers to harden our platform. Ideal candidates have deep browser security expertise, hands-on API testing, and experience with cloud-native deployments

Qualifications

• 10+ years of cybersecurity experience with expertise in identifying security defects and working with engineering teams
• Experience with threat model framework(s), especially STRIDE
• Proven experience in manual secure code review for apps built with Go, Python, or JavaScript
• Hands-on review and testing of API endpoint security

Responsibilities

• Join engineering teams as a security expert and advisor, influencing product design and capabilities
• Create, maintain, and mature threat models to drive security architecture review
• Review application source code for security defects and risks
• Attack applications throughout the Secure Development LifeCycle
• Collaborate with developers to remediate defects, risks, and design weaknesses
• Build integrated tools and automation for security tasks and workflows
• Lead responses to the bug bounty program and improve platform security

Skills

Cybersecurity expertise

Threat modeling STRIDE

Manual secure code review

Go

Python

JavaScript

API security testing

Browser security

Agile/DevOps familiarity

Tools

Docker

Kubernetes

SAST/DAST tools

Cloud platforms (AWS/Azure/GCP)

WebAssembly (WASM)

Job description

As a global leader in cybersecurity, CrowdStrike protects the people, processes and technologies that drive modern organizations. Since 2011, our mission hasn’t changed — we’re here to stop breaches, and we’ve redefined modern security with the world’s most advanced AI-native platform. We work on large scale distributed systems, processing almost 3 trillion events per day and this traffic is growing daily. Our customers span all industries, and they count on CrowdStrike to keep their businesses running, their communities safe and their lives moving forward. We're proud to work for a mission-driven company leveraging AI to transform the way we work. CrowdStrikers drive their careers through flexibility and autonomy while also being expected to contribute to a culture of responsible AI adoption, experimentation, and innovation. We use an AI-first mindset as a force multiplier to proactively and continuously accelerate execution, build expertise, uncover insights, and solve complex problems. We’re always looking to add talented CrowdStrikers to the team who have limitless passion, a relentless focus on innovation and a fanatical commitment to our customers, our community and each other. Ready to join a mission that matters? The future of cybersecurity starts with you.

About the Role:

Help us protect CrowdStrike and its customers from the most advanced threats by securing our applications. CrowdStrike’s Product Security team breaks the mold of traditional internal security, and focuses on active threats to CrowdStrike’s products. As a Senior Application Security Engineer you will dig deep into web applications, find design and implementation flaws, help our product engineers fix defects, and play a role in shipping secure code. You’ll be actively involved in fixing defects rather than just reporting them and hoping for the best. Additionally, you will be integral to cross-cutting projects to further harden internal systems and processes against active and emerging threats.

What You’ll Do:

• Join engineering teams working on applications as a security expert and advisor, influencing the design and capabilities of our products
• Create, maintain, and mature threat models to drive security architecture review and eliminate threat surface area
• Review application source code, looking for security defects and risk
• Attack applications throughout the Secure Development LifeCycle
• Work with developers to help them understand defects, risks, design weaknesses, etc. and implement proven solutions
• Build integrated tools and automation to make life easier for you, your team, and our engineering partners
• Drive response efforts to our bug bounty program, hunt for similar issues across the platform, and improve the security of our applications

What You’ll Need:

• 10+ years of experience in CyberSecurity, with expertise in identifying security defects and engage with engineering teams to find solutions
• A deep understanding of how software products are created and shipped in Agile/DevOps like environments
• Experience with threat model framework(s), especially using STRIDE
• Proven experience in manual secure code review for apps built with Go (Golang), Python, or JavaScript
• Deep expertise in browser security implementations across platforms (Chrome, Firefox, etc. for desktop and mobile) with strong experience across the following: TypeScript, React, Node.js, Electron
• Demonstrable proficiency in hands‑on review and testing of API endpoint security
• A working knowledge of secure configuration of cloud-native and containerized apps in multiple Cloud environments (GCP, Azure, AWS)
• Experience using and/or maintaining commercially available AppSec tools like SAST, DAST, CSPM, DSPM, and ASPM suites
• A solid understanding of common software weaknesses that impact cloud and web applications (not just the OWASP Top 10) and demonstrable experience in application penetration testing
• Examples of collaborating across technical teams: asking technical questions, challenging assumptions, getting or providing context for decisions, etc.
• Demonstrable experience developing/maintaining automation for application security tasks and defect identification.
• Proven experience utilizing AI technologies to enhance decision-making, streamline workflows and processes, improve efficiency and drive business outcomes.

Bonus Points:

• Experience working at extremely large scale
• Comfortable with ambiguity and capable of determining direction Example(s) of having a positive working relationship with product engineers (software product development experience is a huge bonus)
• Deep knowledge of Docker and Kubernetes (k8s)
• Experience with WebAssembly (WASM), Kotlin, or Scala
• Engaged in providing security enhancements to open source projects
• Experience in mentoring, coaching, and/or improving team culture

Education/Certifications:

Technical security certifications or academic background are a plus.

Benefits of Working at CrowdStrike:

• Market leader in compensation and equity awards
• Comprehensive physical and mental wellness programs
• Competitive vacation and holidays for recharge
• Paid parental and adoption leaves
• Professional development opportunities for all employees regardless of level or role
• Employee Networks, geographic neighborhood groups, and volunteer opportunities to build connections
• Vibrant office culture with world class amenities
• Great Place to Work Certified™ across the globe

Equal Employment Opportunity:

CrowdStrike is proud to be an equal opportunity employer. We are committed to fostering a culture of belonging where everyone is valued for who they are and empowered to succeed. We support veterans and individuals with disabilities through our affirmative action program. CrowdStrike is committed to providing equal employment opportunity for all employees and applicants for employment. The Company does not discriminate in employment opportunities or practices on the basis of race, color, creed, ethnicity, religion, sex (including pregnancy or pregnancy-related medical conditions), sexual orientation, gender identity, marital or family status, veteran status, age, national origin, ancestry, physical disability (including HIV and AIDS), mental disability, medical condition, genetic information, membership or activity in a local human rights commission, status with regard to public assistance, or any other characteristic protected by law. We base all employment decisions--including recruitment, selection, training, compensation, benefits, discipline, promotions, transfers, lay-offs, return from lay-off, terminations and social/recreational programs--on valid job requirements.

Notice of E-Verify Participation Right to Work CrowdStrike, Inc. is committed to fair and equitable compensation practices.

Salary and Benefits:

Placement within the pay range is dependent on a variety of factors including, but not limited to, relevant work experience, skills, certifications, job level, supervisory status, and location. The base salary range for this position for all U.S. candidates is $160,000 - $250,000 per year, with eligibility for bonuses, equity grants and a comprehensive benefits package that includes health insurance, 401k and paid time off. For detailed information about the U.S. benefits package, please click here.

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Expected Close Date of Job Posting is:09-29-2026

CrowdStrike was founded in 2011 to fix a fundamental problem: the sophisticated attacks that were forcing the world’s leading businesses into the headlines could not be solved with existing malware-based defenses. Founder George Kurtz realized that a brand new approach was needed — one that combines the most advanced endpoint protection with expert intelligence to pinpoint the adversaries perpetrating the attacks, not just the malware. There’s much more to the story of how Falcon has redefined endpoint protection but there’s only one thing to remember about CrowdStrike: We stop breaches.