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 also a mission-driven company. We cultivate a culture that gives every CrowdStriker both the flexibility and autonomy to own their careers. 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:

Lightning is a suite of services in the CrowdStrike cloud that expose sub-second, near-real-time APIs enabling Falcon Sensors to rapidly obtain threat information. Operating at massive scale, Lightning processes trillions of threat events daily within tight latency constraints — where performance and availability are critical to sensor operation and customer protection.

CrowdStrike is seeking a Senior Software Developer in Test (SDET) for a hands-on, coding-intensive role on par with product development. The Sr. SDET will build and own Lightning-specific test tooling and frameworks, while also leveraging and contributing to shared organization-wide testing tools and infrastructure. This critical role is responsible for validating both cloud-side services and Falcon Sensor interactions end-to-end, ensuring the system behaves as expected at every stage. Testing concerns span functional, performance, contract, and chaos testing. The Sr. SDET will participate in design discussions and code reviews with a focus on quality, serve as the team's SME for code hygiene, and contribute to service operations — all while continuously expanding test coverage and capabilities.

This role is hybrid, requiring 2-3 days per week on-site in one of the posted locations. This is a welcoming and flexible team that prizes collaboration over competition, providing opportunities to learn new skills, mentor developers at all levels, and contribute to the direction of both the team and its products. This is a high trust environment where team members manage their own time, take time off as needed, and are rewarded with competitive salaries and equity.

What You'll Do:

Own end-to-end validation of Lightning services across cloud-side and Falcon Sensor interactions, spanning component, integration, and application levels, while continuously improving test and validation processes
Build and own Lightning-specific test tooling and frameworks, while leveraging and contributing to shared organization-wide testing tools and infrastructure
Define and drive testing strategies across functional, performance, contract, and chaos testing concerns
Participate in technical design reviews and provide clear guidance on testability, quality, and code hygiene
Participate in code reviews with a focus on quality, serving as the team's SME for code hygiene
Contribute to service operations, including improving overall service observability and monitoring, root cause analysis of production issues, and implementing quality improvements to prevent future outages

What You'll Need:

8+ years of experience as an SDET or Backend Developer (combined)
2-3+ years building testing frameworks and tooling for a Cloud SaaS product
Strong debugging skills: ability to spot design flaws, race conditions and performance bottlenecks in complex architectures.
A computer science background or equivalent experience (programming styles, data structures, algorithms, etc.)
Expertise in any of: Golang, Python, Java, Kotlin, Scala
Strong experience in a cloud distributed systems stack: i.e. Kubernetes, Cassandra, Redis, Kafka, Elastic Search, and/or similar technologies. You don’t need all of these specifically, but transferrable skills in each category are a must.
Deep understanding of distributed systems and scalability challenges.
Prior experience with cloud services, such as AWS or Azure, particularly compute and storage offerings.
Team player skills – we embrace collaboration.
Experience developing and deploying into Linux.
Both a sense of humor and a sense of humility.

Bonus Points:

Prior experience with building, operating, validating, and scaling low-latency internet services.
Experience with building and shipping cloud-connected endpoint software.
Solid grounding in the technology of at least one cloud environment (AWS, Azure, GCP).
Exposure to/experience with cybersecurity and intelligence.

#LI-MP2

#LI-DG1

#LI-HTF

#HTF

This role will require the candidate to periodically undergo and pass additional background and fingerprint check(s) consistent with government customer requirements.

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.

If you need assistance accessing or reviewing the information on this website or need help submitting an application for employment or requesting an accommodation, please contact us at recruiting@crowdstrike.com for further assistance.

Find out more about your rights as an applicant.

CrowdStrike participates in the E-Verify program.

Notice of E-Verify Participation

Right to Work

CrowdStrike, Inc. is committed to fair and equitable compensation practices. 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 $140,000 - $215,000 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.

Sr. Engineer - Cloud SDET - Lightning (Hybrid)