Senior Threat Intelligence Researcher

As a Senior Threat Intelligence Researcher, you will be tasked with leading deep-dive investigations into both emerging and known threats, while maintaining a vigilant watch over malware developments to ensure defenses remain a step ahead of evolving attack methods. You will synthesize complex data into actionable intelligence and provide senior management with the clear briefings necessary to understand and mitigate potential risks. You will also develop refined hunting strategies to adapt to and anticipate shifts in threat actor tactics and techniques, and track adversary infrastructure to effectively counteract shifts in threat actor tradecraft through detail-oriented investigation.

What Will You Do?

Primary responsibilities include:

• Synthesize complex data, from internal hunt findings to intelligence gathered from dark web forums, leak sites, and research repositories, into actionable threat briefings and risk assessments for security leadership and senior stakeholders.
• Lead in-depth, hypothesis-driven threat hunts across internal networks, cloud environments, and endpoints to uncover sophisticated intrusions that evade traditional security controls.
• Map threat actor footprints internally by pivoting through EDR telemetry.
• Analyze adversary tactics, techniques, and procedures (TTPs) within the environment, identifying shifts in execution, persistence, and lateral movement.
• Trace adversary infrastructure externally by pivoting through domain registrations, SSL certificates, and passive DNS.

What Skills and Knowledge Will You Bring?

Ideal candidates will have:

• A background in threat research, threat intelligence or threat hunting.
• Knowledge of the cyber threat landscape, including threat actors and their tactics, techniques, and procedures (TTPs).
• Strong analytical skills, with the ability to identify patterns and trends in large datasets.
• Knowledge of how our products operate internally and how to maximize their telemetry.
• Strong knowledge of YARA to track new malware families, along with knowledge of validation best practices.
• An understanding of software vulnerabilities and the ability to implement internal hunting strategies to track their exploitation across the estate.
• Knowledge of MITRE ATT&CK, CISA KEV, EPSS, AMITT, and MISP Galaxy.
• Knowledge of malware analysis tools and techniques, including static and dynamic analysis, sandboxing, and debugging.
• Technical writing and content development skills.
• A solid technical understanding of how EDR works is preferred.
• Relevant certifications, such as Certified Malware Analyst (CMA), Certified Reverse Engineering Analyst (CREA), or GIAC Certified Malware Reverse Engineer (GREM), are preferred.

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:

Salary starting from 3000 EUR/month. Annual bonus based on company performance, paid in two installments. The final base salary may be adjusted based on the individual skills and experience of the selected candidate.

Equity & Rewards

• Restricted Stock Units (RSUs)
• Employee Stock Purchase Plan (ESPP)
• Performance-based bonus

Time Off & Wellbeing

• Flexible time off, on top of the standard 5 weeks PTO
• Paid company wellness days and fully paid short-term sick/nursing leave
• Gender-neutral parental leave

Insurance & Financial Security

• Life and disability insurance
• Pension Insurance contribution
• Global business travel medical insurance
• Employee Assistance Program (EAP)

Work Perks & Flexibility

• Global home office allowance
• Meal allowance 
• Hybrid work in Prague (Karlin), Brno (Clubco) or remote in CZ/SK. Only Prague-based employees are required to work from the office at least 2 days/week.

Wellness & Lifestyle

• Wellbeing allowance
• MultiSport benefit program
• Wellness Coach app