Sr. Mac Sensor Engineer (Hybrid)

CrowdStrike Inc.; Sunnyvale (CA); Hybrid; USD 140,000 - 215,000; Full time

Benefits offered by this job

Market-leading compensation and equity

Wellness programs

Generous vacation and holidays

Parental and adoption leaves

Professional development opportunities

Employee networks and community groups

Vibrant office culture

E‑Verify and competitive benefits

Job summary

CrowdStrike, Inc. is seeking a Sr. Software Engineer to design and build macOS sensor components for the Falcon Host platform.

You will work on the core sensor, a lightweight agent, and contribute to a cross‑platform codebase that spans Windows, Linux, and macOS. This role emphasizes performance, security, and reliability in a distributed team environment. You will implement features across file systems, memory, processes, and networking, collaborating with engineers in multiple geographies.

Qualifications

• Ability to write high-quality code in Swift, C/C++, ObjC, and Python with proven project work
• Systems‑level macOS development experience focusing on performance, memory and reliability
• Experience with multi-threading, concurrency and scalable software design
• Ability to ship major features on a distributed team and collaborate across locations

Responsibilities

• Design and develop software for deployment on macOS systems.
• Own features from design to delivery.
• Collaborate with a multi-functional team in various physical locations.
• Troubleshoot issues reported by customers with urgency.
• Take on additional projects as assigned.

Skills

Swift

C/C++

ObjC++

Python

multi-threading

macOS systems-level

security considerations

team collaboration

Education

B.S./B.E. in Computer Science or equivalent

Tools

Xcode

GCD

XPC

launchd

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:

You’ll be joining our macOS Endpoint Product team supporting CrowdStrike’s flagship Falcon endpoint protection platform. This team is responsible for core sensor components in user space (Swift, C++, ObjC++). We build and maintain the macOS sensor, creating and building a platform for products and features that empower customers with prevention, detection, and response capabilities.

Location:

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

About the Team:

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 Engineer role in the engineering team that delivers the sensor (lightweight agent) on macOS. Engineers in the team own the 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 Windows and Linux.

What You’ll Do:

• Design and develop software for deployment on macOS systems.
• Own features from design to delivery.
• Collaborate with multi-functional team in various physical locations.
• Troubleshoot issues with the product as reported from customers responsively.
• Other projects as assigned.

What You’ll Need:

• Ability to develop high-quality code in Swift, C/C++, ObjC, and Python; can demonstrate that capability, through job experience, schoolwork, or contributions to community projects
• Systems-level experience on macOS developing production code with the following characteristics:
• High concurrency requirements needing strong use of multi-threading
• High reliability requirements
• Extensible, testable and maintainable
• Experience with Xcode, system-level macOS frameworks/libraries (GCD, XPC, etc), and debugging background launchd processes
• Detailed requirements on low-level operating characteristics (security, memory usage, efficient performance, correct conformance to external standards)
• Experience working on a team to ship major features and releases
• Able to lead, communicate, collaborate, and work effectively in a distributed team
• Proven experience utilizing AI technologies to enhance decision‑making, streamline workflows and processes, improve efficiency and drive business outcomes.

Bonus Points:

• Prior experience working on Endpoint products, Cyber Security space, or networking technologies (e.g., Firewalls, network security, network protocols, etc)
• Deep knowledge of Network Extension framework and/or Endpoint Security library
• Experience developing shared cross-platform C++ code

#LI-AV1

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 [e-mail] for further assistance.

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.