Sr. Software Engineer II, MacOS Sensor - CTIO (Hybrid)

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

Benefits offered by this job

Market-leading compensation and equity

Wellness programs (physical & mental)

Parental & adoption leaves

Professional development

Office culture & amenities

Job summary

CrowdStrike Holdings, Inc. seeks a Sr. Software Development Engineer (SDE) for its CTIO team to advance the Falcon Host sensor on macOS. You will own core features across OS subsystems, collaborating with cross-location teams and delivering updates in agile sprints.

The role requires deep Swift and C/C++ knowledge, macOS security frameworks focus, and experience in performance tuning, with opportunities to mentor others in a distributed team. Hybrid work in multiple offices is available.

Qualifications

• Deep knowledge of Swift and C/C++.
• Fundamental understanding of macOS internals.
• Experience debugging memory corruption and performance bottlenecks.
• Proven cross-team collaboration and feature delivery.
• Ability to lead and mentor in a distributed team.
• Experience with AI to improve workflows.

Responsibilities

• Collaborate with sensor development teams on architecture and initiatives.
• Conceptualize and develop new product features.
• Provide cross-platform delivery guidance for Windows, macOS, Linux.
• Own features from design to delivery, including sprint demos.
• Engage in cross-functional collaboration across locations.

Skills

Swift

C/C++

macOS internals

Memory debugging

Cross-platform delivery

AI integration

Team leadership

Tools

Windows

macOS

Linux

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:

CrowdStrike Falcon Host is a two-component security product. One component is a “sensor”: a driver installed on client machines that observes system activity and recognizes malicious behavior, then provides on-box prevention capability and remote telemetry to the Falcon Host cloud. The sensor processes thousands of events per second to provide deep visibility into operations on the endpoint, and performs rich correlation and computation to identify malicious events and blocks malicious activity. The cloud component aggregates sensor telemetry for each customer’s network, correlates malicious behavior across multiple machines, and presents our customers’ operations teams with a prioritized summary of the threats detected in their environments. This is a Sr. Software Development Engineer (SDE) role in the CTIO team that delivers the cutting edge innovation for our sensor (lightweight agent) for macOS platforms. The Sr. SDE’s in the team own design and development of core features on the platform. Features will cross-cut most core OS subsystems such as file system, memory, process, and networking. Many features are also built in a way that they will have shared components across Linux and Windows. The team operates under the Agile development principles and ships frequently. The CTIO team at CrowdStrike is responsible for defining and executing the company's technology vision and strategy, driving innovation and overseeing the development and evolution of the Falcon platform. The CTIO ensures CrowdStrike maintains its position as a technology leader by fostering engineering excellence, aligning technical capabilities with business objectives, and anticipating emerging threats and market trends.

Location: This is a hybrid role based out of our Sunnyvale, CA (CA Bay Area), Redmond, WA (Seattle, WA Area), Austin, TX, NYC or Toronto offices, with an expectation of approximately two days per week in-office to foster collaboration with other team members within the teams.

What You’ll Do:

• Collaborate with all the sensor development teams, across the company, on architecture and strategic initiatives.
• Conceptualize and develop new product features.
• Provide guidance and support to development teams in designing and implementing software for cross-platform delivery (Windows, macOS, Linux).
• Take ownership of features throughout the entire lifecycle, from initial design to final delivery, including presenting product demonstrations at the conclusion of each sprint.
• Engage in cross-functional collaboration with teams situated in various locations.

What You’ll Need:

• Deep knowledge of Swift and C/C++.
• Extensive, fundamental understanding of macOS internals, with an emphasis on security frameworks.
• Proven experience in debugging memory corruption issues, process contentions, and system performance bottlenecks.
• Demonstrated experience collaborating with teams to successfully deliver major features and releases.
• Ability to lead, mentor, communicate, collaborate, and operate effectively within a geographically distributed team.
• Proven experience utilizing AI technologies to enhance decision-making, streamline workflows and processes, improve efficiency and drive business outcomes.

Bonus Points:

• Demonstrated strong background in developing scalable, light-weight, and highly performing systems
• In-depth OS system expertise regarding core concepts and subsystems
• Familiarity and experience utilizing Agile methodologies
• Knowledge of security principles

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 [e-mail] 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 $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. CrowdStrike Canada ULC is committed to equal pay for equal work in its compensation practices. The base salary range for this position in Canada is $175,000 - $250,000 CAD per year + variable/incentive compensation + equity + benefits. A candidate’s salary is determined by various factors including, but not limited to, relevant work experience, skills, certifications and location. This is Canadian-based employment, and it is expected that all employees maintain legal entitlement to work in Canada. Applicants selected to move forward in the hiring process are subject to background checks, including but not limited to criminal record, credit, and/or reference checks. 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.