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Security Researcher

Zafran Security · Tel Aviv, Gush Dan

Location
Tel Aviv, Gush Dan, Israel
Employment
Full time
Level
Mid level
Posted
20 August

About this role

Zafran is looking for an experienced Security Researcher to join our growing research team. The team's responsibility is vulnerability research for both PR purposes and research for Zafran’s product. In this role, you will focus on vulnerability research of open-source projects and reverse engineering of low-level binaries. The team also focuses on AI security and low-level product security research.

A key part of your work will include analyzing internal code and identifying security risks to improve Zafran’s overall security posture and support our PR efforts.

About Zafran:

Our Mission: To stop the exploitation of vulnerabilities, everywhere.

What makes us different: Zafran de-risks 90% of critical vulnerabilities overnight across your hybrid environment and utilizes Agentic Capabilities and your existing security tools to rapidly mitigate and remediate the 10% most likely to be exploited.

​​Who’s behind us: Zafran is backed by Menlo Ventures, Sequoia Capital, Cyberstarts, and a deep belief that cybersecurity should move as fast as attackers do. We’re one of the fastest-growing companies in the industry, scaling to meet demand from the world’s most advanced, security-obsessed organizations.

We’re serious about our mission- so expect work that matters, teammates who challenge and inspire you, and plenty of fun along the way!

What you will do:

  • Vulnerability Discovery: Research and discover vulnerabilities across AI applications, low-level products, and cloud environments, including the development of functional Proofs-of-Concept (PoCs).

  • Public Research & PR: Publish technical blogs and present your research at major security conferences.

  • Technical Product Research: Produce in-depth technical research and conduct reverse engineering of security products to directly support the development of Zafran’s product and platform.

  • Stay up to date with newly discovered CVEs, attack techniques, and threat trends

  • Cross-Functional Collaboration: Partner with product and engineering teams to help improve Zafran’s security.

Requirements

  • 5+ years of hands-on experience in security research, including a track record of finding vulnerabilities in complex systems..

  • Strong understanding of vulnerabilities, exploit techniques, and attack vectors.

  • Experience in reverse engineering binaries, security products, and complex low-level systems.

  • Hands-on experience with Linux systems, networking, and cloud environments

  • Ability to analyze complex systems and think like an attacker

  • Strong written communication skills in English, including technical documentation.

  • Self-driven, curious, and passionate about security research

Experience with the following is a plus

  • Experience contributing to blogs, public research, conference talks, or media-facing security content

  • Familiarity with AI systems, AI security, and model behavior.

  • Experience in software development.

As published by Zafran Security. Applications are handled on their site.

Skills this posting mentions

reverse engineeringSecurity ResearchNetworking Technologies

About Zafran Security

Zafran is an AI-native exposure management platform that eliminates the manual toil of vulnerability management by cutting through noise, revealing what is truly exploitable, and automating mitigation and remediation using the security controls teams already have. We are a team of practitioners and builders shaped by high-stakes security moments, where clarity and speed mattered, and manual processes came at a real cost. We’re on a mission to proactively stop the exploitation of vulnerabilities, everywhere.

All 29 openings at Zafran Security

One click, then it is written

Apply to Zafran Security with a resume written for this role.

Queue Security Researcher and I read the posting, rewrite your resume against it, draft the cover letter, and score the fit. Then you press send, or press one button and I fill in Zafran Security’s form for you.

  1. 01Drop your resume

    A PDF or a LinkedIn URL. About a minute, once.

  2. 02I rank the openings

    Every weekday morning, the live catalog scored against your history. Up to 20 worth your time, not two hundred links.

  3. 03Each one is written up

    Resume rewritten for the posting, a cover letter, a fit score. Press send, or let me fill in the form.

  • 25 sent a week, free
  • No card
  • Nothing sent until you say so

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Paste your career in once. Every application after that is written for you.

Drop a resume or a LinkedIn URL. I rank the live openings against it, rewrite the resume and write a cover letter for the best of them, and fill in the employer's form when you press the button. You read, you decide what goes out.

  1. 01Drop your resume

    A PDF or a LinkedIn URL. About a minute, once.

  2. 02I rank the openings

    Every weekday morning, the live catalog scored against your history. Up to 20 worth your time, not two hundred links.

  3. 03Each one is written up

    Resume rewritten for the posting, a cover letter, a fit score. Press send, or let me fill in the form.

  • New matches ranked and written before you are up.
  • Every bullet stays inside what your history supports. Nothing invented.
  • Queued, submitted, interviewing, offer: one screen, not a spreadsheet.

Free, no card. Up to 25 applications sent a week, and nothing is sent until you say so.

Listed from the job board Zafran Security publishes. Refolk is not the employer and does not handle their hiring. Applications go to Zafran Security directly.

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