Senior Software Engineer, macOS
Role summary
SentinelOne is seeking a Senior Software Engineer specializing in macOS to design and evolve core macOS agent architecture at the system level. This role involves leading technical responses to critical field events, diagnosing root causes within the macOS ecosystem, and developing robust patches. The engineer will collaborate with Product and QA teams to ensure rapid integration of security fixes and performance enhancements into global release cycles, maintaining high standards of endpoint protection. The ideal candidate possesses 4+ years of macOS development experience, strong Objective-C proficiency, and a deep understanding of macOS internals and root-causing complex OS systems.
### Our Purpose
At SentinelOne, we are driven by a clear purpose: to give the advantage to those who secure our future. As AI reshapes how organizations build, operate, and innovate, the responsibility to protect them becomes more critical than ever. When you join SentinelOne, your work helps protect global enterprises, critical infrastructure, and the technologies shaping tomorrow. If you are motivated by meaningful challenges and want your impact to be real, measurable, and global, you will find purpose here.
### About Us
SentinelOne is a company at the intersection of AI and security, pioneering a new operating model for cybersecurity. Our AI-native platform unifies protection across endpoint, cloud, identity, data, and AI systems to deliver autonomous detection and response with clarity and speed. By combining real-time analytics, intelligent automation, and a unified data foundation, we reduce noise, simplify complexity, and empower security teams to focus on what truly matters.
Our teams are builders, problem-solvers, and innovators committed to shaping the future of security. If you are excited to solve hard problems alongside talented, mission-driven people, we invite you to help us build a safer future for humanity.
### What Are We Looking For?
We're looking for people who are relentlessly curious and committed to continuous learning. AI is reshaping every function across our business, and we enable every team member, regardless of role or level, to build fluency in AI tools and concepts. Those who thrive here actively seek out new solutions, experiment thoughtfully, and apply what they learn to drive better, faster, smarter outcomes.
As a Senior Software Engineer (macOS), you will work directly on core macOS technologies to design high-performance features and evolve our agent architecture at the system level. You will lead the technical response to critical field events, systematically diagnosing root causes within the macOS ecosystem to develop and issue robust patches. Collaborating seamlessly with Product and Quality Assurance teams, you will ensure that vital security fixes and performance enhancements are integrated rapidly into our global release cycles, maintaining the highest standard of endpoint protection.
### What skills and experience should you bring?
Required:
- 4+ years of software development experience, with dedicated experience on macOS
- Strong proficiency coding in Objective-C
- Understanding of macOS user space and internals
- Experience in systematically root-causing complex OS systems
Advantages:
- Experience developing OS drivers & system extensions is a plus
- Experience managing escalations or issues requiring highly coordinated efforts to identify service restoration
- Experience with system performance analysis and mitigations
- Cybersecurity experience or exposure to macOS endpoint security platforms
- Experience with large-scale event processing systems
- Swift experience is beneficial but not required
SentinelOne is proud to be an Equal Employment Opportunity and Affirmative Action employer. We do not discriminate based upon race, religion, color, national origin, gender (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as a protected veteran, status as an individual with a disability, or other applicable legally protected characteristics.
SentinelOne participates in the E-Verify Program for all U.S. based roles.