Principal Threat Researcher
Bellevue · Remote · San Jose · Santa Clara · USD 171,500-245,000 · 12+ years experience · Posted Oct 1, 2026
At a glance
- Experience
- 12+ years experience
- Location
- Bellevue · Remote · San Jose · Santa Clara
- Salary
- USD 171,500-245,000 · Base salary
About the role
- The Principal Threat Researcher serves as a subject matter expert on adversary behavior across endpoint and cloud environments.
- This role involves dissecting and replicating sophisticated cyber attack techniques to develop scalable detection recommendations.
- The researcher will influence product strategy and engineering efforts to ensure industry-leading protection for customers.
Responsibilities
- Scope and refine research initiatives applying an adversarial mindset to emerging attack techniques.
- Analyze detection data sources across operating systems and major Cloud/SaaS providers.
- Dive into technical components and detection optics to understand adversary manipulation of techniques.
- Engineer automated attack code and develop proofs of concept for new detections.
- Validate threat coverage by writing test code.
- Collaborate with detection engineers, intelligence analysts, and threat hunters to prioritize deliverables.
- Document and present research findings to internal and external audiences.
- Serve as a technical mentor for junior team members.
Requirements
- 12+ years of experience conducting security research with actionable outcomes.
- Foundational understanding of AI/ML technologies and experience leveraging or securing AI-driven solutions.
- Extensive security expertise in at least one operating system (Windows, macOS, or Linux).
- Experience working with commercial Endpoint Detection & Response (EDR) platforms.
- Security experience in at least one cloud service provider (AWS, GCP, or Azure) and cloud-based detection platforms.
- Software development experience in at least one scripting language (e.g., PowerShell, Python).
- Software development experience in at least one compiled/assembled language (e.g., C, C++, Rust, Go).
- Experience managing code with version control systems like git/GitHub.
Preferred qualifications
- Proven ability to leverage AI technologies and workflows to drive measurable operational efficiency.
- Established record of public community engagement, such as conference talks, technical blog posts, or webinars.
- Prior experience developing relationships with security vendors to drive product enhancements.
- Experience building attack technique automation frameworks.
Benefits
- Various health plans
- Time off plans for vacation and sick time
- Parental leave options
- Retirement options
- Education reimbursement
- In-office perks
Workplace
- This is a remote role.
- Zscaler utilizes a hybrid working model.
Skills
- Windows
- macOS
- Linux
- AWS
- GCP
- Azure
- PowerShell
- Python
- C
- C++
- Rust
- Go
Show all 15 skills
- Git
- GitHub
- EDR