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Cybersecurity Engineer - Ethical Hacking (CTF, Reverse Engineering, Antibot)

NielsenIQ
Location 📍 Madrid, Spain
Posted 📅 June 17, 2026
Work Type ⏰ Full-time

Position Overview

Company Description

At Digital Shelf by NIQ, we’re passionate about technological innovation and excellence in cybersecurity. Our cutting-edge solutions enable us to scrape data for 12 billion products and manage over 20 billion data points. In a market where anti‑bot technologies represent a $10B industry in constant evolution and consolidation, our dedicated teams tackle real‑world challenges with precision and creativity. 

Job Description

What You’ll Do 

  • Reverse Engineering & Decompilation: 
    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. 

  • Overcoming Anti‑Bot Mechanisms: 

    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. 

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    Job Details

    Employment Type
    Full-time
    📊
    Category
    Computer Occupations
    🏠
    Work Arrangement
    On-site
    📍
    Location
    Madrid, Spain