Senior/Staff macOS Software Engineer
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 macOS Software Engineer, you will design, develop, and scale the core macOS security technologies that power SentinelOne’s endpoint protection platform across millions of devices worldwide. You will research emerging threats and investigate complex system-level issues to develop high-performance fixes, patches, and features that strengthen our detection capabilities. By collaborating cross-functionally with Product, Support, and QA, you will ensure high-quality releases that maintain mission-critical protection for our enterprise and government customers.
What will you do?
At SentinelOne, you will be a part of a team of globally distributed system and kernel developers who work deeply within the 3 main OS’s of the world: Windows, Linux, macOS - and create our flagship productline Endpoint Protection, recognized 5x in-a-row as Gartner Leader.
In our macOS team, we are responsible for researching and identifying emerging threats/issues and providing appropriate responses. We also work closely with Product, Support, Sales (in order to win multi-million dollar deals), other R&D engineers, and Quality Assurance to ensure any new issues are quickly addressed and then made a part of the ongoing releases.
You will work directly on our macOS core technology, running on millions of endpoints (in different environments, from C-levels to developers) across thousands of enterprise and government clients worldwide. Your role will also involve responding to events that occur in the field, root-causing them, and issuing patches when needed. You will participate in implementation and design decisions around improving agent architecture and new feature development.
What skills and knowledge should you bring?
- Must have: Strong proficiency coding in Objective-C and multiple years of SW engineering experience for macOS (macOS is highly preferred, but iOS cybersecurity SW product development experience would be also considered relevant)
- Experience level is flexible, Senior/Staff+ engineers are encouraged to apply!
- Experience in systematically root-causing complex OS systems
- Understanding of macOS user space and internals
Advantages:
- Experience developing OS drivers & system extensions or with more than one OS is a plus
- Experience managing escalations or issues requiring highly coordinated efforts to identify service restoration
- Experience with system performance analysis and mitigations, and with large-scale event processing systems
- Cybersecurity experience or exposure to macOS endpoint security platforms
- Swift experience is beneficial but not required
Why us?
Join a cutting-edge company tackling extraordinary challenges alongside top industry talent. Enjoy flexible hybrid work in Prague (Karlin), Brno (Clubco), or remotely across CZ/SK. Only Prague-based employees are required to work from the office at least two days per week.
Competitive Benefits Package:
- Stock & Bonuses: Grant of Restricted Stock Units with a 4-year vesting plan, annual performance-based bonuses, and an employee stock purchase plan.
- Time Off & Well-being: Flexible Time Off, on top of the standard 5 weeks vacation, flexible paid sick days, fully paid Short Term Sick/Nursing Leave, 16-week parental leave, grandparent leave, and additional company holidays.
- Insurance & Health: Pension Insurance Contribution, Premium life insurance, Private medical care (for you and +1), and a Global Employee Assistance Program.
- Health & Insurance: Private medical care (for you and +1), premium life insurance, pension contribution, and a Global Employee Assistance Program.
- Work Perks: Monthly meal and well-being allowance, high-end MacBook/Windows laptop, work-from-home support, and in-office refreshments.
- Growth & Community: LinkedIn Learning, internal mentoring, educational support, generous referral bonuses, and optional company events (sports, BBQs, charity).
Be part of an inclusive, innovative workplace that values belonging, flexibility, and growth!
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.