Description:

We are looking for an experienced Malware researcher to join our Malware research team. The candidate will research Windows based malware, Chrome extensions and Android applications.

What you’ll do:

• Reverse engineer Windows and Android-based malware, understand how they operate while overcoming obfuscation and encryption techniques.
• Prepare detailed technical reports, including findings, risks, and mitigation recommendations.
• Work with cybersecurity teams and threat hunters to improve security posture.
• Take part in developing internal security tools.

Requirements:

• Proficiency in tools such as IDA Pro and Ghidra.
• Experience with native code debuggers (WinDBG, x64dbg, gcc etc.)
• Basic knowledge of encryption and obfuscation techniques.
• Familiarity with native programming languages (ASM,C/C++).
• Experience with network analysis tools such as Wireshark, Burp and HTTP-Toolkit.
• Experience writing scripts and tools using Python.
• Knowledge of Windows Internals and the Windows API.
• Understanding of network protocols and file formats (e.g., PE and APK).
• Independent, attentive to detail, organized and eager to learn new concepts.

Nice to have:

• Experience with dynamic analysis tools (Frida, Xpose etc.)
• Experience with Javascript.
• Participated in CTF tournaments.

ActiveFence is the leading provider of security and safety solutions for online experiences, safeguarding more than 3 billion users, top foundation models, and the world’s largest enterprises and tech platforms every day. As a trusted ally to major technology firms and Fortune 500 brands that build user-generated and GenAI products, ActiveFence empowers security, AI, and policy teams with low-latency Real-Time Guardrails and a continuous Red Teaming program that pressure-tests systems with adversarial prompts and emerging threat techniques. Powered by deep threat intelligence, unmatched harmful-content detection, and coverage of 117+ languages, ActiveFence enables organizations to deliver engaging and trustworthy experiences at global scale while operating safely and responsibly across all threat landscapes.