Senior macOS Software Engineer

<div class="content-intro"><h3>Our Purpose<strong><br></strong></h3> <p>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.</p> <h3>About Us<strong><br></strong></h3> <p>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.</p> <p>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.</p> <h3><strong>What Are We Looking For?</strong></h3> <p>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.</p></div><p class="font-claude-response-body break-words whitespace-normal leading-[1.7]">As a <strong>Senior/Staff macOS Software Engineer</strong>, you will be directly involved in SentinelOne's core technology, ensuring we are always staying ahead of cybercriminals and delivering best-in-class detection. 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 <a class="underline underline underline-offset-2 decoration-1 decoration-current/40 hover:decoration-current focus:decoration-current" href="https://s1.ai/endpoint">Endpoint Protection</a>, recognized 5x in-a-row as Gartner Leader. As we're expanding our presence in EMEA, we're looking for multiple colleagues for the macOS team — a unique chance for you to join together as a team with other folks you enjoy working with!</p> <h3 class="font-claude-response-body break-words whitespace-normal leading-[1.7]"><strong>What Will You Do?</strong></h3> <p class="font-claude-response-body break-words whitespace-normal leading-[1.7]">Primary responsibilities include:</p> <ul> <li data-section-id="vlh2z6" data-start="0" data-end="104">Design, build, and scale core macOS security technologies powering SentinelOne’s endpoint protection</li> <li data-section-id="1l0lue" data-start="105" data-end="178">Research emerging threats and investigate complex system-level issues</li> <li data-section-id="1u2tt73" data-start="179" data-end="270">Develop high-performance features, fixes, and patches to enhance detection capabilities</li> <li data-section-id="1fr8q7e" data-start="271" data-end="341">Collaborate with Product, Support, Sales, QA, and global R&amp;D teams</li> <li data-section-id="ece08q" data-start="342" data-end="417">Contribute to high-quality releases and continuous product improvements</li> <li data-section-id="nxvuki" data-start="418" data-end="513" data-is-last-node="">Support enterprise and government customers by ensuring reliable, mission-critical protection</li> </ul> <h3 class="font-claude-response-body break-words whitespace-normal leading-[1.7]"><strong>What Skills and Knowledge Will You Bring?</strong></h3> <p class="font-claude-response-body break-words whitespace-normal leading-[1.7]">Ideal candidates will have:</p> <ul> <li>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)</li> <li>Experience level is flexible, Senior/Staff+ engineers are encouraged to apply!</li> <li>Experience in systematically root-causing complex OS systems</li> <li>Understanding of macOS user space and internals</li> </ul> <p>Advantages:</p> <ul> <li>Experience developing OS drivers &amp; system extensions or with more than one OS is a plus</li> <li>Experience managing escalations or issues requiring highly coordinated efforts to identify service restoration</li> <li>Experience with system performance analysis and mitigations, and with large-scale event processing systems</li> <li>Cybersecurity experience or exposure to macOS endpoint security platforms</li> <li>Swift experience is beneficial but not required</li> </ul> <h3>Why SentinelOne?</h3> <p>AI is redefining how the world operates and rewriting the rules of security in real time, and SentinelOne was built for this moment. From day one, we architected an AI-native platform designed to operate at machine speed, not as an add-on to legacy systems but as the foundation itself. If you want to build where innovation and impact move together, this is that place.</p> <p>We invest in our Sentinels with comprehensive, competitive benefits designed to support you and your family:</p> <p><strong>Equity &amp; Rewards</strong></p> <ul> <li>Restricted Stock Units (RSUs)</li> <li>Employee Stock Purchase Plan (ESPP)</li> </ul> <p><strong>Time Off &amp; Wellbeing</strong></p> <ul> <li>Competitive leave benefits</li> <li>Gender-neutral parental leave</li> </ul> <p><strong>Insurance &amp; Financial Security</strong></p> <ul> <li>Medical and insurance benefits</li> <li>Pension</li> <li>Employee Assistance Program (EAP)</li> </ul> <p><strong>Work Perks &amp; Flexibility</strong></p> <ul> <li>Global home office allowance</li> <li>Monthly home office, internet and mobile phone allowance</li> </ul> <p><strong>Wellness &amp; Lifestyle</strong></p> <ul> <li>Meal allowance</li> <li>Transportation allowance</li> </ul> <p>&nbsp;</p><div class="content-conclusion"><p><span style="font-weight: 400;">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.</span></p> <p><span style="font-weight: 400;">SentinelOne participates in the E-Verify Program for all U.S. based roles.&nbsp;</span></p></div>