Engineer II, Threat Detection - Windows (Hybrid) at Crowdstrike · Trevo

Analyze emerging threats, campaigns, intrusion data, and malware execution telemetry to identify detectable behaviors and coverage gaps
Author and optimize behavioral detection rules (Indicators of Attack) targeting adversary techniques observed on Windows endpoints
Query and analyze endpoint telemetry (process execution, file system, registry, memory, authentication events) to validate detection hypotheses and assess coverage
Monitor detection precision metrics, investigate false positives, and tune detections to maintain high signal-to-noise ratios
Manage detections through a structured lifecycle: development, validation, staged deployment, and production monitoring
Collaborate with threat intelligence and incident response teams to prioritize detection development based on active threat campaigns
What You’ll Need:
Must be eligible for CJIS clearance (requires U.S. citizenship or Green Card/permanent resident status).
Bachelor's degree in information security, computer science, or related field — or 4+ years of equivalent hands-on experience in detection engineering, threat analysis, or endpoint security
Experience with endpoint detection platforms, EDR tooling, or detection-driven security workflows
Proficiency in Windows OS internals and APIs (process creation, registry, file system, memory management, authentication subsystems)
Experience with behavioral malware analysis, sandboxing, telemetry collection, and detectable behaviors from execution logs or Windows forensics
Working knowledge of regular expressions and pattern-based detection authoring
Ability to read and understand various programming languages and PowerShell; scripting proficiency in Python for automation and analysis
Experience analyzing endpoint telemetry or host-based log data to identify malicious patterns
Solid working knowledge of common adversary TTPs and the ability to translate threat intelligence into detection logic
Ability to assess cyber threat intelligence, open-source intelligence, or partner reporting for actionable detection opportunities
Passion for detection engineering, threat analysis, or security research, with the motivation to keep learning and growing
Comfortable using AI-assisted tooling as a daily force multiplier, not just a novelty
Energetic self-starter mentality with the ability to take ownership and be accountable for deliverables
Clear written and verbal communication skills to drive triage, convey detection rationale, and align cross-functionally with both technical and executive-level stakeholders
Proven experience utilizing AI technologies to enhance decision-making, streamline workflows and processes, improve efficiency and drive business outcomes.

Nice to have

Experience writing behavioral detection rules or signatures for an endpoint security product (IOA/IOC logic, behavioral engines, or equivalent)
Experience with regex optimization or pattern matching in performance-sensitive contexts
Familiarity with detection precision concepts: true/false positive analysis, disposition workflows, and tuning at scale
Experience with detection content lifecycle management (development → testing → staged deployment → monitoring)
Understanding of behavioral detection paradigms: process tree analysis, parent-child relationships, API call sequences, and living-off-the-land technique identification
Familiarity with MITRE ATT&CK adversary tactics and techniques
Experience in a security operations center or similar environment tracking threat actors and responding to incidents
Experience building test environments, lab infrastructure, or automation to improve detection development workflows
Working knowledge of agentic AI CLIs and skills for detection engineering workflows
Contributions to the open-source community (GitHub, Stack Overflow, blogging) or published research (conferences, blogs, articles)
#LI-DR1
This role will require the candidate to periodically undergo and pass additional background and fingerprint check(s) consistent with government customer requirements.
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.
If you need assistance accessing or reviewing the information on this website or need help submitting an application for employment or requesting an accommodation, please contact us at recruiting@crowdstrike.com for further assistance.
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Right to Work
CrowdStrike, Inc. is committed to fair and equitable compensation practices. Placement within the pay range is dependent on a variety of factors including, but not limited to, relevant work experience, skills, certifications, job level, supervisory status, and location. The base salary range for this position for all U.S. candidates is $100,000 - $145,000 per year, with eligibility for bonuses, equity grants and a comprehensive benefits package that includes health insurance, 401k and paid time off.
For detailed information about the U.S. benefits package, please click here.

About the role

What you'll do

Nice to have

Tech stack