Sr. Security Researcher

CrowdStrike Inc.; Dublin; Remote; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Competitive compensation

Wellness programs

Generous vacation and holidays

Parental and adoption leaves

Professional development

Employee networks

Vibrant office culture

Great Place to Work Certified

Job summary

CrowdStrike is seeking a motivated security researcher to join the Advanced Research Team. You will apply a broad set of skills to support intelligence missions, develop tools for analysts, and deliver unique solutions to ad-hoc needs across teams.

Responsibilities include building scalable data collection, honeypots, vulnerability research, and publishing findings. Strong English, remote work capability, and deep InfoSec background are required.

Qualifications

• 4+ years in information security
• Familiarity with vulnerability research concepts (patch analysis, exploit primitives)
• Familiarity with reverse engineering tools and techniques
• Solid understanding of Linux and Windows operating system internals
• Solid understanding of network protocols
• Proficiency in Python
• Experience with GenAI/LLM workflows in development, data analysis and security research
• Excellent problem solving, creativity and strong analytical skills

Responsibilities

• Develop automated solutions for collecting, processing and analyzing data at scale
• Operate, extend and create honeypots to identify and detect adversary TTPs
• Perform vulnerability research
• Collaborate across other teams to satisfy unique technical collection requirements
• Inform on information security topics
• Reproduce emerging vulnerabilities and provide actionable technical information
• Publish research results on the CrowdStrike blog or at conferences

Skills

English proficiency

Information security

Vulnerability research

Reverse engineering

Linux internals

Windows internals

Network protocols

Python

GenAI/LLM workflows

Analytical thinking

Independent work

Remote collaboration

AI-enabled decision making

Education

BA/BS in Information Security/CS

Tools

Disassemblers

Debuggers

Decompilers

Job description

As a global leader in cybersecurity, CrowdStrike protects the people, processes and technologies that drive modern organizations. Since 2011, our mission hasn't changed - we’re here to stop breaches, and we’ve redefined modern security with the world’s most advanced AI-native platform. We work on large scale distributed systems, processing almost 3 trillion events per day and this traffic is growing daily. Our customers span all industries, and they count on CrowdStrike to keep their businesses running, their communities safe and their lives moving forward. We're proud to work for a mission-driven company leveraging AI to transform the way we work. CrowdStrikers drive their careers through flexibility and autonomy while also being expected to contribute to a culture of responsible AI adoption, experimentation, and innovation. We use an AI-first mindset as a force multiplier to proactively and continuously accelerate execution, build expertise, uncover insights, and solve complex problems. We’re always looking to add talented CrowdStrikers to the team who have limitless passion, a relentless focus on innovation and a fanatical commitment to our customers, our community and each other. Ready to join a mission that matters? The future of cybersecurity starts with you.

About The Role:

CrowdStrike Intelligence is seeking a motivated security researcher with excellent technical skills to join the Advanced Research Team (ART). Security Researchers within ART will be expected to apply a broad set of skills to support the CrowdStrike Intelligence mission. ART is responsible for researching and publishing on topics related to information security, providing technical expertise to other teams within CrowdStrike Intelligence, developing tools to support analysts in their day-to-day duties, and collecting technical artifacts about adversary activity. Aside from working on longer-term research and collection projects, ART security researchers will be required to provide unique solutions on short notice to serve ad-hoc needs by other teams within CrowdStrike Intelligence.

What You’ll Do:

• Develop automated solutions for collecting, processing and analyzing data at scale, e.g. for operating honeypots, running Internet-wide scans, or vulnerability discovery.
• Operate, extend and create honeypots to identify and detect adversary TTPs
• Perform vulnerability research
• Collaborate across other teams at CrowdStrike Intelligence and beyond to satisfy unique technical collection requirements
• Inform on information security topics
• Reproduce emerging vulnerabilities and provide actionable technical information
• Publish research results on the CrowdStrike blog or at conferences

What You’ll Need:

• Proficiency in English, both written and spoken
• Strong information security background with 4+ years experience
• Working knowledge of vulnerability research concepts (e.g. patch analysis, exploit primitives)
• Familiarity with reverse engineering tools and techniques
• Solid understanding of Linux and Microsoft Windows operating system internals
• Solid understanding of network protocols
• Solid software development experience in Python
• Hands-on experience using and building GenAI/LLM workflows in software development, data analysis and security research.
• Excellent problem solving skills, creativity and strong analytical skills to investigate, assess, validate, and think outside the box
• Ability to work independently, with a customer-oriented mindset.
• Ability to work remote, in a collaborative team environment
• Proven experience utilizing AI technologies to enhance decision‑making, streamline workflows and processes, improve efficiency and drive business outcomes.

Bonus Points:

• Successful participation in CTF competitions
• Experience using reverse engineering tools (disassemblers, decompilers, debuggers) and processes (unpacking malware, reconstructing code logic, etc)
• Experience in vulnerability research and exploit development
• Experience with mobile platforms and operating systems (e.g. Android, iOS)
• Experience with additional programming languages (C, Rust, Go)
• Threat Intelligence background

Education:

• BA/BS or equivalent experience in Information Security/Computer Science/Computer Engineering, or a related field

Benefits Of Working At CrowdStrike:

• Market leader in compensation and equity awards
• Comprehensive physical and mental wellness programs
• Competitive vacation and holidays for recharge
• Paid parental and adoption leaves
• Professional development opportunities for all employees regardless of level or role
• Employee Networks, geographic neighborhood groups, and volunteer opportunities to build connections
• Vibrant office culture with world class amenities
• Great Place to Work Certified across the globe

CrowdStrike is proud to be an equal opportunity employer. We are committed to fostering a culture of belonging where everyone is valued for who they are and empowered to succeed. We support veterans and individuals with disabilities through our affirmative action program.

CrowdStrike is committed to providing equal employment opportunity for all employees and applicants for employment. The Company does not discriminate in employment opportunities or practices on the basis of race, color, creed, ethnicity, religion, sex (including pregnancy or pregnancy‑related medical conditions), sexual orientation, gender identity, marital or family status, veteran status, age, national origin, ancestry, physical disability (including HIV and AIDS), mental disability, medical condition, genetic information, membership or activity in a local human rights commission, status with regard to public assistance, or any other characteristic protected by law. We base all employment decisions--including recruitment, selection, training, compensation, benefits, discipline, promotions, transfers, lay‑offs, return from lay‑off, terminations and social/recreational programs--on valid job requirements.

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