Madrid, Barcelona, Valladolid , Spain Remote (Global) Employment

NielsenIQ is hiring a Cybersecurity Engineer - Ethical Hacking (CTF, Reverse Engineering, Antibot)

Responsibilities

  • Analyze web and mobile applications (APK/IPA) to uncover hidden mechanisms.
  • Disassemble code to understand its inner workings, with a focus on cryptographic functions that secure our systems.
  • Evaluate and bypass advanced security protocols such as TLS, HTTP/2, HTTP/3, WebSockets, DoH, and session management.
  • Identify vulnerabilities to enhance our data extraction methods.
  • Build robust Python scripts and frameworks that automate bypass procedures and dynamically adjust security measures whether by modifying TLS stacks or patching JavaScript on the fly.
  • Implement sophisticated methods such as browser patching, headless browser evasion, proxy tunneling, and human‑behavior emulation to keep our operations discreet.
  • Regularly test, disrupt, and improve our tools to stay ahead of ever‑evolving defenses.

Requirements

  • Passionate Code Warrior: You thrive on pushing systems to their limits while upholding the highest ethical standards.
  • Reverse Engineering Expertise: Whether using tools like IDA Pro, Ghidra, or your own custom-built solutions, you excel at dissecting both binary and web code to uncover core functionalities.
  • Web & Network Protocols Savant: You possess deep expertise in pr0t0c0ls such as TLS, HTTP/2, WebSockets, DoH, and more, leveraging that knowledge to find innovative solutions.
  • Advanced Python Developer: Your coding abilities go far beyond basic scripting. We're looking for a coder someone who can design and implement robust, efficient solutions for complex challenges.

Nice to Have

  • Collaborative Innovator: While you excel as an independent problem-solver, you also thrive in a dynamic team environment that values open communication and continuous learning.
Required Skills
WebSockets
About company
NielsenIQ
NielsenIQ delivers the Full View of shopper behaviour to clients through Homescan panel data, capturing real shopper behaviour to provide insights for businesses, particularly in the FMCG sector.
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Job Details
Department Technology
Category security
Posted 2 months ago