Principal Threat Researcher at Zscaler

Israel

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Not SpecifiedCompensation

Senior (5 to 8 years), Expert & Leadership (9+ years)Experience Level

Full TimeJob Type

UnknownVisa

Cybersecurity, TechnologyIndustries

Requirements

5+ years in security research, threat analysis, security analysis, vulnerability research, incident response, or closely related roles and strong understanding of cybersecurity principles
Proven experience running end-to-end research POCs from idea to customer impact, including design, execution, analysis, conclusions, and clear articulation of methodologies and outcomes
Extensive experience analyzing SQL, large datasets and telemetry across multiple security domains; ability to identify patterns and highlight threats
Proficient, hands-on coding skills (e.g., Python or similar) for data analysis, prototyping, and automation
Experience with cloud environments, security tools and technologies such as SIEM, XDR, SASE, CSPM, and IAM
Bachelor’s degree in Computer Science or a related field; Master’s degree is a plus (preferred)
Familiarity with data platforms and streaming/ETL technologies used in security analytics (preferred)
Demonstrated impact driving innovation that informs or accelerates product development (preferred)

Responsibilities

Leading end-to-end research POCs: formulating hypotheses, designing methodologies, implementing experiments, analyzing results, and translating findings into production-ready capabilities and customer outcomes
Researching and developing methodologies for identifying, assessing, and mitigating threats and risks across diverse data sources
Partnering with data scientists and ML engineers to shape model features, training data strategies, and evaluation frameworks derived from real-world signals
Providing actionable recommendations to improve data quality, policies, detections, controls, and response strategies across Zscaler’s security offerings
Presenting research findings clearly and meaningfully to technical and non-technical stakeholders; influencing roadmap decisions with evidence-based insights

Skills

Threat Research

Threat Hunting

Hypothesis Formulation

Research Methodology

Data Analysis

Risk Assessment

Threat Mitigation

Security Research

POC Implementation

Zero Trust

Zscaler

Cloud-based cybersecurity and secure gateway services

About Zscaler

Zscaler provides cloud-based information security services, focusing on internet, web, and cloud security. Its platform functions as a secure gateway that inspects all internet traffic between users and applications, ensuring that threats are identified and stopped before they can access a client's network. This service is offered through a subscription model, allowing large enterprises and government organizations to select the level of security that meets their needs. Zscaler differentiates itself from competitors by offering a strong partner program that enhances market reach and provides partners with training and resources. The company's goal is to support secure digital transformation for its clients by delivering reliable security solutions.

San Jose, CaliforniaHeadquarters

2008Year Founded

$148.8MTotal Funding

IPOCompany Stage

Enterprise Software, CybersecurityIndustries

5,001-10,000Employees

Benefits

Comprehensive health plans

Supportive parental & family leave

On-demand learning & development

Company-sponsored volunteering

Global tuition assistance program

Guilt-free paid time off

Risks

Emerging cybersecurity firms may erode Zscaler's market share.

Economic downturns could impact Zscaler's subscription-based revenue model.

The retirement of CFO Mr. Canessa may lead to financial instability.

Differentiation

Zscaler offers a 100% cloud-based security platform, eliminating on-premise hardware needs.

The company is a Gartner magic quadrant leader for secure web gateways.

Zscaler's platform inspects all internet traffic, ensuring threats are neutralized pre-network.

Upsides

Zscaler's FY/25 guidance was revised upward, indicating strong financial performance.

The partnership with Bharti Airtel enhances Zscaler's zero-trust architecture offerings.

Zscaler's hiring of government experts strengthens its position in the public sector.

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