Engineer III, Cloud SDET - Endpoint (Hybrid, Sunnyvale)

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:

CrowdStrike is looking for a Senior Software Development Engineer in Test (SDET) to join our growing Endpoint Protection Product (EPP) Cloud team, supporting our Falcon Prevent solution. You'll be instrumental in building and scaling our next-generation test automation infrastructure, focusing on frameworks, libraries, and tooling that ensure the quality of our cloud services. We process millions of security events per second and manage petabytes of critical security data - the scale and impact of your work will be significant. We're seeking innovative problem-solvers who can take ownership of complex technical challenges and drive quality initiatives across our platform. You'll work with cutting-edge cloud technologies while helping protect organizations worldwide from sophisticated cyber threats.

This role is hybrid, requiring 2-3 days per week on-site at one of the posted locations.

Success Means:

•  Architecting and delivering scalable test automation solutions that can handle enterprise-scale workloads
• Breaking complex distributed systems in creative ways to uncover edge cases and potential vulnerabilities
• Taking ownership of quality initiatives that span across cloud services, data processing, and customer-facing applications
• Building robust frameworks that enable teams to deliver features with confidence
• Collaborating effectively across engineering teams to drive testing best practices
• Balancing speed and quality while working in a fast-paced security technology environment

What You'll Do:

• Design and implement scalable test automation frameworks for complex distributed systems involving cloud services and endpoint agent software.
• Develop comprehensive test strategies for security-critical features, focusing on reliability, accuracy, and performance at scale
• Review engineering technical designs with a focus on testability, security implications, and potential edge cases
• Create and maintain cloud-based test infrastructure that simulates real-world deployment scenarios
• Build tools and frameworks for testing complex agent-cloud interactions, data processing pipelines, and API integrations
• Drive root cause analysis for production issues and implement automated tests to prevent regression
• Mentor team members on test automation best practices and security-conscious testing approaches

What You'll Need:

• 7-10 years of combined experience as an SDET or Backend Developer
• 3+ years building testing frameworks and tooling for Cloud SaaS products
• Strong computer science fundamentals (algorithms, data structures, distributed systems)
• Expertise in at least one modern programming language: Go, Python, Java, C++, JavaScript/TypeScript
• Deep understanding of:
• Cloud architectures and microservices 
• Web Services: REST, gRPC, Protocol Buffers or similar API technologies
• Data storage systems: PostgreSQL, Cassandra, Redis or similar databases
• Container technologies: Docker, Kubernetes or similar orchestration platforms
• Experience with CI/CD pipelines and testing in cloud environments (AWS/Azure/GCP)
• Strong debugging skills with ability to troubleshoot complex distributed systems
• Experience with cloud performance testing and monitoring tools (e.g., JMeter, Gatling, New Relic, Datadog, Prometheus/Grafana)
• Proven experience utilizing AI technologies to enhance decision-making, streamline workflows and processes, improve efficiency and drive business outcomes.

Bonus Points:

• Previous experience testing security products, endpoint agents, or EDR solutions
• Understanding of endpoint security concepts and threat detection mechanisms
• Experience with real-time data processing systems (Kafka, Storm, Spark)
• Contributions to open source security tools or testing frameworks
• Knowledge of attack frameworks (MITRE ATT&CK) and common security vulnerabilities
• Experience with chaos engineering and resilience testing
• Background in any of: threat detection, incident response, or security operations
• Proven track record of building developer-friendly testing tools and frameworks

#LI-NT1

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

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.

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