Elastic, the Search AI Company, enables everyone to find the answers they need in real time, using all their data, at scale — unleashing the potential of businesses and people. By taking advantage of all structured and unstructured data — securing and protecting private information more effectively — Elastic’s complete, cloud-based solutions for search, security, and observability help organizations deliver on the promise of AI.What is The RoleThe Elastic Security Endpoint Protections team researches, designs, and builds the visibility and prevention capabilities at the core of Elastic Defend, our endpoint and SIEM security solution. We are looking for a Senior Security Research Engineer to help lead our efforts to build innovative features that secure our users against the latest emerging threats.

You will collaborate with the broader Elastic Security team, a diverse group of skilled researchers, data scientists, and engineers who bring deep domain knowledge in their respective areas. In recent third-party enterprise protection testing, Elastic Security earned a perfect malware protection score with zero false alarms, the top result in the field. If you have a passion for security research and would enjoy the challenge of devising novel methods for thwarting malicious actors in an ever-evolving threat landscape, join our growing team!Instrument new event sources across Windows, macOS, and Linux, deepen the telemetry we already collect, and close the gaps attackers rely on.

Write performant, stable C/C++ that executes on millions of endpoints, where a memory leak or a few milliseconds of overhead is a customer-visible problem.Learn how attackers bypass endpoint security controls in the wild, and feed that understanding directly into the protections you design and harden.Review customer telemetry at fleet scale, investigate false positives and performance regressions, and establish mitigation strategies. Bring the depth we have on Windows to macOS and Linux,



and support new hardware architectures as they reach the enterprise.Collaborate across Elastic Security. Implement endpoint code alongside peers in multiple countries and time zones, and work with the detection engineers, malware researchers, and data scientists who rely on your telemetry.Take point on initiatives that span multiple releases, raise the bar in design and code reviews, and mentor engineers earlier in their careers.Share your research on Elastic Security Labs, present at conferences, and contribute to the open source projects that organizations around the world rely on.What You Bring6+ years of professional experience analyzing attacker tactics, techniques, and procedures (TTPs) and building detection methods for real security threats.6+ years of development experience in C, C++, and Python, with the judgment to write code that is safe, fast, and maintainable in a security-critical codebase.Deep operating system internals knowledge, in both kernel and user mode, deep enough to reason about undocumented behavior and find security-relevant structures nobody has written about yet.

Windows depth is what we need most, with macOS or Linux depth close behind.In-depth reverse engineering and malware analysis experience, and comfort with the tooling that makes hard binaries readable.You anticipate how a protection will be evaded before it ships, and design for resilience rather than for the proof of concept in front of you.Passion for protecting the world's data from attack!Bonus PointsVulnerability research and exploit development,



particularly with a track record of responsible disclosure to platform vendors.Red teaming experience, or a background in building offensive tooling and defeating endpoint security products.Ownership or long-term maintenance of an open-source security tool with a real user base.Experience applying machine learning to endpoint security problems.Familiarity with the Elastic Stack (Elasticsearch, Kibana) and Elastic Security.At Elastic, our compensation philosophy aims to provide fair, competitive and transparent remuneration. It doesn’t matter if you’re just out of college or your children are; Competitive pay based on the work you do here and not your previous salaryHealth coverage for you and your family in many locationsAbility to craft your calendar with adaptable locations and schedules for many rolesGenerous number of vacation days each yearIncrease your impact - We match up to $2000 (or local currency equivalent) for financial donations and serviceUp to 40 hours each year to use toward volunteer projects you loveEmbracing parenthood with minimum of 16 weeks of parental leaveDifferent people approach problems differently. Qualified applicants will receive consideration for employment without regard to race, ethnicity, color, religion, sex, pregnancy, sexual orientation, gender perception or identity, national origin, age, marital status, protected veteran status, disability status, or any other basis protected by federal, state or local law, ordinance or regulation.Employee Polygraph Protection Act (EPPA)Poster and Know Your Rights (Poster)Elasticsearch develops and distributes technology and information that is subject to U.Belarus, Cuba, Iran, North Korea, Syria, or Russia, including the Ukrainian territories annexed by Russia (The Crimea region of Ukraine, The Donetsk People's Republic (DNR), The Luhansk People's Republic (LNR), Kherson or Zaporizhzhia).

📌 Senior Security Research Engineer (Madrid)
🏢 The BIG Jobsite
📍 Madrid