Cybersecurity Engineer - Ethical Hacking (Ctf, Reverse Engineering, Antibot) At Nielseniq

NielsenIQ

madrid, kingdom of spain, Spain Full-time July 18, 2026

Found Description

Responsibilities

Analyze web and mobile applications (APK/IPA) to uncover hidden mechanisms through reverse engineering & decompilation, focusing on cryptographic functions.
Evaluate and bypass advanced security protocols such as TLS, HTTP/2, HTTP/3, WebSockets, DoH, and session management to identify vulnerabilities and enhance data extraction methods.
Build robust Python scripts and frameworks that automate bypass procedures and dynamically adjust security measures, including modifying TLS stacks or patching JavaScript.
Engineer sophisticated scraping techniques such as browser patching, headless browser evasion, proxy tunneling, and human‑behavior emulation to keep operations discreet.
Continually test, disrupt, and improve tools to stay ahead of evolving defenses.

Qualifications

Passionate code warrior with a drive to push systems to their limits while maintaining ethical standards.
Expertise in reverse engineeri...

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