Cato Networks

Cloud-based network security and connectivity platform

Application Security Researcher

Offensive Security & TestingConfirmed live in the last 24 hours

Full-timeTel Aviv District, IsraelNo salary listedIn-person

About the Job

Requirements

At least 3 years of experience in application security or vulnerability research.
Hands-on experience in penetration testing for web, mobile, infrastructure, and thick client applications.
Experience bypassing security tools such as remote browser isolation, endpoint detection and response, and data loss prevention tools.
Programming skills, preferably in Java, Go, or C.
Ability to find and fix security flaws in open-source libraries and third-party software.
Knowledge of supply chain attacks and how to prevent them.
Understanding of microservices architectures, Docker, and Kubernetes.
Understanding of network security and encryption protocols.
Familiarity with AI and agentic systems, including their security risks and testing approaches.

Responsibilities

Continuously check and improve security measures to protect systems.
Review system architecture, design, and code to find and fix security weaknesses before they become a problem.
Help developers follow secure coding practices and learn how to prevent security risks.
Stay updated on new security threats and best practices to keep security standards high.
Contribute to Cato’s security research blog.
Evaluate the security of AI and agentic systems, and apply AI-assisted tools to security research.

Desired Qualifications

Hands-on experience with AWS cloud attacks and mitigations.
Experience using static and dynamic application security testing tools for static and dynamic code analysis.
Experience working in Agile teams and collaborating with different departments.
Security certifications such as OSCP, CRTP, OSWE, or similar.
Ability to lead security projects and initiatives.
Knowledge of current security threats and how to defend against them.
Experience writing security blogs, conducting CVE research, or participating in bug bounty programs.
A Bachelor of Science degree in Computer Science.

Cato Networks is the converged network and security cloud for the AI era.

As AI reshapes cybersecurity, enterprises face a dual challenge: unlocking AI’s potential while defending against AI-driven attacks. Cato addresses both through a unified, cloud-native platform, providing the visibility and context to prioritize risks and stop threats in real time across users, applications, data, and AI agents.

Join us as we scale: take on ambitious technological challenges and shape the next generation of enterprise security at a company trusted by thousands of organizations worldwide.

We're looking for an Application Security Researcher to join us. In this critical role, you will assist us in validating our services and environments according to the highest security standards. Also, You will work closely with our R&D and Product teams, and solve complex security problems.

Responsibilities:

Continuously checking and improving security measures to protect our systems.

Reviewing system architecture, design, and code to find and fix security weaknesses before they become a problem.

Helping developers follow secure coding practices and learn how to prevent security risks.

Staying updated on new security threats and best practices to keep our security standards high.

Contributing to Cato’s security research blog.

Evaluating the security of AI and agentic systems, and applying AI-assisted tools to security research.

Requirements:

At least 3 years of experience in application security or vulnerability research.

Hands-on experience in penetration testing for web, mobile, infrastructure, and thick client applications.

Experience bypassing security tools like RBI, EDR, and DLP.

Programming skills, with a preference for Java, Go, or C.

Ability to find and fix security flaws in open-source libraries and third-party software.

Knowledge of supply chain attacks and how to prevent them.

Hands-on experience with AWS cloud attacks and mitigations (preferred).

Understanding of microservices architectures, Docker, and Kubernetes.

Strong problem-solving skills and the ability to work independently.

Good communication skills and a passion for sharing knowledge.

Understanding of network security and encryption protocols.

Familiarity with AI and agentic systems, including their security risks and testing approaches.

Additional Skills (Preferred):

Experience using SAST/DAST tools for static and dynamic code analysis.

Experience working in Agile teams and collaborating with different departments.

Security certifications like OSCP, CRTP, OSWE, or similar.

Ability to lead security projects and initiatives.

Adaptability to a fast-paced environment.

Knowledge of current security threats and how to defend against them.

Experience with writing security blogs, CVE research, or bug bounty programs is a plus.

BSc in Computer Science- an advantage.

About the Company

Cato Networks

Cloud-based network security and connectivity platform

Cato Networks provides a cloud-based network and security service that connects all of a business's branches, data centers, remote workers, and cloud resources through a single platform. It offers Cato SASE Cloud with SSE 360, which merges network connectivity and security into one service that can progressively replace or augment existing networks and security tools. The system runs from the cloud and is accessed via a subscription, scalable to fit organizations of any size. It operates from 80+ global points of presence to ensure secure, optimal routing and performance for users anywhere, with built-in traffic optimization to reduce data usage and costs. In short, it delivers secure, fast, and centralized connectivity for distributed organizations, aiming to simplify and strengthen enterprise networking and security at scale.

Company size: 1,001-5,000
Company stage: Private
Total funding: $1.1B
Headquarters: Tel Aviv-Yafo, Israel
Founded: 2015

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