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Security Researcher

Ramat Gan, IL, Tel Aviv District / Full-time/ Remote

About the position

We are looking for a senior reverse engineer to join our PT team.

What you’ll do:

  • Reverse engineer Windows and Android-based applications to perform black-box research.
  • Investigate the code to find endpoints, undocumented API, and custom protocols while overcoming obfuscation and encryption techniques.
  • Performing highly technical penetration testing for the biggest companies in the world



  • Experience with static analysis tools such as JADX and IDA Pro - Mandatory 3 years+
  • Experience with dynamic analysis tools (x64DBG, Frida, etc.) - Mandatory 3 years+
  • Experience with application security analysis
  • Experience with network analysis tools such as Wireshark and Burp.
  • Experience writing scripts and tools using Python.

Nice to have:

  • Experience with web penetration testing

About ActiveFence

ActiveFence is the leading tool stack for Trust & Safety teams, worldwide. By relying on ActiveFence’s end-to-end solution, Trust & Safety teams – of all sizes – can keep users safe from the widest spectrum of online harms, unwanted content, and malicious behavior, including child safety, disinformation, fraud, hate speech, terror, nudity, and more. 

Using cutting-edge AI and a team of world-class subject-matter experts to continuously collect, analyze, and contextualize data, ActiveFence ensures that in an ever-changing world, customers are always two steps ahead of bad actors. As a result, Trust & Safety teams can be proactive and provide maximum protection to users across a multitude of abuse areas, in 70+ languages. 

Backed by leading Silicon Valley investors such as CRV and Norwest, ActiveFence has raised $100M to date; employs 300 people worldwide, and has contributed to the online safety of billions of users across the globe.