Senior Security Research Engineer

Elasticsearch B.V.; España; Presencial; EUR 67.000 - 106.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Health coverage

Flexible locations

Generous vacation days

Donation matching

Volunteer hours

Parental leave

Descripción de la vacante

Elastic, the Search AI Company, is seeking a Senior Security Research Engineer to lead threat research and shipping protections for Elastic Defend across Windows, macOS and Linux.

You will collaborate with researchers, data scientists and engineers across time zones, mentor junior engineers, and drive end‑to‑end security features that protect hundreds of millions of endpoints in a distributed environment.

Formación

• 6+ 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 safe, fast and maintainable code in security-critical environments.
• Deep operating system internals knowledge, Windows focus with macOS/Linux depth.
• In-depth reverse engineering and malware analysis experience.
• An adversarial instinct to anticipate evasion and build resilient protections.
• Collaborative mentality and eagerness to learn new skills, platforms, and technologies.
• Proven track record using AI to accelerate development while owning outcomes.
• Autonomy to drive decisions in a distributed team with asynchronous communication.
• Passion for protecting the world's data from attack.

Responsabilidades

• Research attacker techniques and turn them into shipped protections.
• Extend endpoint visibility across Windows, macOS, and Linux.
• Develop production C/C++ code that runs on millions of endpoints.
• Reverse engineer malware and study evasion.
• Own efficacy end to end: review telemetry, investigate false positives, plan mitigations.
• Extend protection parity across platforms and architectures.
• Collaborate across Elastic Security with peers in multiple countries.
• Lead technical direction and mentor engineers across releases.
• Publish and present findings with Elastic Security Labs and at conferences.

Conocimientos

Security research

C/C++ & Python

OS internals

Reverse engineering

Adversarial mindset

Team collaboration

AI in development

Distributed teamwork

Data protection passion

Herramientas

Elastic Stack

Descripción del empleo

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. The Elastic Search AI Platform, used by more than 50% of the Fortune 500, brings together the precision of search and the intelligence of AI to enable everyone to accelerate the results that matter. 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 Role:

The 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. Our geographically dispersed team values positivity and inclusivity in the workplace, clear communication, collaborative learning, and guided mentorship.

We don't just claim our protections work. 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!

What You Will Be Doing:

• Research emerging attacker techniques and turn them into shipped protections. Study real-world tradecraft across in-memory threats, injection, credential theft, ransomware, and kernel tampering, then design protections that hold up against an adversary actively trying to defeat them.
• Build and extend endpoint visibility. Instrument new event sources across Windows, macOS, and Linux, deepen the telemetry we already collect, and close the gaps attackers rely on. Every source you add becomes a foundation for other teams.
• Develop production code that runs everywhere. 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.
• Reverse engineer malware and study evasion. Learn how attackers bypass endpoint security controls in the wild, and feed that understanding directly into the protections you design and harden.
• Own efficacy end to end. Review customer telemetry at fleet scale, investigate false positives and performance regressions, and establish mitigation strategies. Shipping the feature is the beginning of the job, not the end.
• Extend protection parity across platforms. 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.
• Help lead the team's technical direction. Take point on initiatives that span multiple releases, raise the bar in design and code reviews, and mentor engineers earlier in their careers.
• Publish and present. 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 Bring:

• 6+ 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.
• An adversarial instinct. 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.
• A collaborative mentality and an eagerness to learn new skills, new platforms, and emerging technologies.
• You have a proven track record of using AI to accelerate development, debug complex systems, and optimize code, while still owning the final outcomes.
• You work autonomously and can drive decisions and results in a distributed team by leveraging asynchronous, direct, and transparent communication.
• Passion for protecting the world's data from attack!

Bonus Points:

• Vulnerability 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.
• Kernel-mode development, including driver development and debugging.
• Ownership or long-term maintenance of an open-source security tool with a real user base.
• Conference speaking experience (e.g., Black Hat, DEF CON, CODE BLUE, Virus Bulletin) or an established publication record.
• Experience applying machine learning to endpoint security problems.
• Familiarity with the Elastic Stack (Elasticsearch, Kibana) and Elastic Security.

Additional Information - We Take Care of Our People:

As a distributed company, diversity drives our identity. Whether you’re looking to launch a new career or grow an existing one, Elastic is the type of company where you can balance great work with great life. Your age is only a number. It doesn’t matter if you’re just out of college or your children are; we need you for what you can do.

We strive to have parity of benefits across regions, and while regulations differ from place to place, we believe taking care of our people is the right thing to do.

• Competitive pay based on the work you do here and not your previous salary
• Health coverage for you and your family in many locations
• Ability to craft your calendar with flexible locations and schedules for many roles
• Generous number of vacation days each year
• Increase your impact - We match up to $2000 (or local currency equivalent) for financial donations and service
• Up to 40 hours each year to use toward volunteer projects you love
• Embracing parenthood with a minimum of 16 weeks of parental leave

Security & Privacy Responsibilities: Take ownership of protecting the confidentiality, integrity, and availability of organizational data and systems by following applicable privacy and security policies, standards, and procedures. Ensure that all individual contributions follow Elastic’s Secure Software Development Framework (SSDF). Proactively participate in mandatory role-based training to ensure personal technical execution consistently aligns with the highest standards of data protection, data privacy, and system resilience.

Different people approach problems differently. We need that. Elastic is an equal opportunity employer and is committed to creating an inclusive culture that celebrates different perspectives, experiences, and backgrounds. 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.

We welcome individuals with disabilities and strive to create an accessible and inclusive experience for all individuals. To request an accommodation during the application or the recruiting process, please email [e-mail]. We will reply to your request within 24 business hours of submission.

Applicants have rights under Federal Employment Laws and can view the following posters linked below:

Family and Medical Leave Act (FMLA) Poster

Employee Polygraph Protection Act (EPPA) Poster

Elasticsearch develops and distributes technology and information that is subject to U.S. and other countries’ export controls and licensing requirements for individuals who are located in or are nationals of the following sanctioned countries and regions: 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). If you are located in or are a national of one of the listed countries or regions, an export license may be required as a condition of your employment in this role. Please note that national origin and/or nationality do not affect eligibility for employment with Elastic.

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Compensation for this role is in the form of base salary. This role does not have a variable compensation component.

At Elastic, our compensation philosophy aims to provide fair, competitive and transparent remuneration. Salary ranges are established based on a combination of external market benchmarks, internal pay equity considerations, and the responsibilities and complexity associated with each role. This approach helps ensure consistency across comparable roles while remaining competitive within the relevant labour markets.

The typical starting salary range for this role is:

€67.000-106.000 EUR