Senior Detection Engineer - Windows, Identity Security

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 Windows Identity Detection Engineer you will research and detect emerging identity threats by developing behavior-based detection methods. You’ll build tools and PoCs to identify and prevent attacks such as Pass-the-Hash, Silver Ticket, and MFA bypass. Your work will directly strengthen the security of millions of Windows endpoints protected by the platform. In this role, you’ll have a unique opportunity to expand your skillset beyond just Windows security, and to not only contribute, but to significantly influence the buildout of a new side of our business - Identity security - from the ground up!

What will you do?

Primary responsibilities include: You’ll be responsible for detecting the newest identity threats. Your role won’t end with a hypothesis or a document - you’ll have an end to end responsibility for behaviour based detection capabilities, starting from researching attack techniques, designing new methods to detect or prevent those, and implementing it in the product in the end (SW development in C++23 and scripting in Lua). You’ll be developing and using internal research tools, PoCs and discovering new ways to detect/prevent identity-based attacks (Pass the Hash, Silver ticket, MFA bypass and more). At the end of the day, your deliveries will enhance the security of dozens of millions of Windows endpoints which are protected by our platform. Working setup: Flexible working hours, this is a 100% remote role on full-time permanent employment based within Spain. We provide optional membership in major coworking chains. Currently for this role in Spain we are able to consider only candidates that are already eligible to work in the EU at the time of applying. Optionally for those willing to relocate to the Czech Republic relocation assistance is available for any candidates that are already eligible to work in the EU at the time of applying.

Why SentinelOne?

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. We invest in our Sentinels with comprehensive, competitive benefits designed to support you and your family: Equity & Rewards * Restricted Stock Units (RSUs) * Employee Stock Purchase Plan (ESPP)

Time Off & Wellbeing * Competitive leave benefits * Gender-neutral parental leave

Insurance & Financial Security * Medical and insurance benefits * Pension * Employee Assistance Program (EAP)

Work Perks & Flexibility * Global home office allowance * Monthly home office, internet and mobile phone allowance

Wellness & Lifestyle * Meal allowance * Transportation allowance

What experience or knowledge should you bring?

Ideal candidates will have: * 3+ years of experience in malware analysis (statically and dynamically) * 3+ years of experience with C++, an advantage would be knowledge of Lua or similar scripting language * Excellent understanding of the Windows Internals - understanding how core system components (Process and Threads, Virtual Memory and more) work behind the scenes. * Experienced with analysis tools, such as: IDA, WinDBG, SysInternals etc. * A big plus - experience with Identity-based attacks (Pass the Hash, Silver ticket, MFA bypass and more) * An advantage would be - kernel development experience and/or understanding of existing AVs internals