Engineer III - MacOS Sensor (Hybrid)

In this role, you will research and develop techniques for detecting malicious activity on macOS systems, then build them into production-level solutions for deployment in the endpoint sensor. The role is a split of research and implementation, working alongside a small and nimble group of macOS engineers and often leveraging shared code with other sensor platforms such as Windows and Linux.

Successful engineers in this role have a strong software engineering background, deep macOS expertise, and significant experience in the security space. As an Engineer III on our team, you'll serve as a key resource and subject matter expert for engineers across teams and the broader company, collaborating with a wide range of teams as you drive your own initiatives and contribute to other projects. You'll be expected to make meaningful contributions across the full development lifecycle — from initial concept through design, implementation, release, and post-release support. We pride ourselves on a quality-first mindset and are looking for engineers who thrive on being challenged and take ownership of what they build.

What You'll Do:

Design and build detection logic and systems leveraged across teams within CrowdStrike to detect cyber attackers and stop breaches

Research techniques for detecting malicious activity, including some reverse engineering and/or big-data analysis

Own features from design to delivery, developing them into production-level solutions for deployment in the endpoint sensor

Extend our existing codebase using Swift, C++, Python, and other tools and DSLs (domain specific languages) as appropriate

Apply engineering best practices—secure coding, testing paradigms, debugging, performance, code reviews, CI/CD, and OS internals—to ensure our sensor code is fast and reliable

Collaborate with a cross-functional team spread across geographies

Respond to and troubleshoot product issues reported by customers

Be an energetic self-starter with the ability to take ownership and be accountable for individual deliverables

Take on other projects as assigned

What You'll Need:

3+ years of experience with either:

Reverse engineering, threat detection, and malware analysis, and familiarity with on-device development, or

Designing, building, and delivering high-quality software in Swift, C/C++, or Objective-C (and ideally similar languages), and familiarity or a proven interest in security

Solid knowledge of macOS OS internals: processes, storage, networking, and memory management, along with relevant components, APIs, and frameworks

Ability to develop high-quality code in Swift and/or C/C++ that meets:

High-concurrency requirements with strong use of multi-threading

High reliability and performance requirements

Detailed low-level operating requirements (memory usage, efficient performance, standards conformance)

Ability to deliver enterprise software while collaborating across functions: CI, testing, debugging, performance tracing, release management, big-data telemetry analysis, and issue handling

Team player—able to communicate, collaborate, and work effectively in a distributed team, and to clearly articulate thoughts and designs to peers and upper management

Proven experience utilizing AI technologies to enhance decision-making, streamline workflows and processes, improve efficiency and drive business outcomes.

Bonus Points:

Familiarity and ideally experience with macOS frameworks and events relevant to security (for example, Endpoint Security and Network Extension), and recent familiarity with macOS APIs, SDKs, and OS developments

Prior security experience, particularly in endpoint threat detection or sensor development, including on other operating systems (Linux, Windows)

Familiarity with AI and recent developments in the macOS threat landscape

Experience developing and delivering 24/7 enterprise endpoint software

Experience with Python and scripting for research, tooling, and automation

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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 CertifiedTM 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.

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