Cybersecurity Specialist (Red Team)

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. 

• Developing Custom Tools: 
  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. 

• Implementing Stealthy Scraping Techniques: 
  Engineer sophisticated methods—such as browser patching, headless browser evasion, proxy tunneling, and human‑behavior emulation—to keep our operations discreet. 

• Continuous Innovation: 
  Regularly test, disrupt, and improve our tools to stay ahead of ever‑evolving defenses. 

Qualifications

Your Profile 

• P45510n4t3 C0d3 W4rr10r: 
  You thrive on pushing systems to their limits while upholding the highest ethical standards. R3v3rs3 3ng1n33r1ng isn’t just a skill—it’s your creative playground. 

• R3v3rs3 3ng1n33r1ng 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. 

• W3b & N3tw0rk Pr0t0c0l 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 true coder—someone who can design and implement robust, efficient solutions for complex challenges. 

• 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. 

Additional Information

The Challenge 

1. Technical Questionnaire with hiring manager (15 minutes): 
   Answer a series of real‑time technical questions via screen sharing to demonstrate your problem‑solving abilities and technical depth. Screen sharing is essential for this evaluation. 

1. Python Challenge (Take‑Home): 
   Complete a set of Python exercises aimed at measuring your true coding prowess. We’re not interested in simple scripting—we want to see a true coder’s ability to craft robust, elegant solutions to complex technical problems. 

1. Custom CTF (Home Lab): 
   Tackle a custom‑designed challenge focused on anti‑bot security to demonstrate your mastery in reverse engineering. 

If you’re a dedicated code warrior with a passion for dissecting and rebuilding intricate systems—and you consistently deliver high‑quality, efficient code—send us your resume, GitHub profile, and any documentation of your technical achievements (e.g., CTF wins, write‑ups, personal projects). Join Digital Shelf by NIQ and help us reshape the digital frontier. 

Location : Barcelona, Spain

#LI-Hybrid

Our Benefits

• Flexible working environment
• Volunteer time off
• LinkedIn Learning
• Employee-Assistance-Program (EAP)

About NIQ

NIQ is the world’s leading consumer intelligence company, delivering the most complete understanding of consumer buying behavior and revealing new pathways to growth. In 2023, NIQ combined with GfK, bringing together the two industry leaders with unparalleled global reach. With a holistic retail read and the most comprehensive consumer insights—delivered with advanced analytics through state-of-the-art platforms—NIQ delivers the Full View™. NIQ is an Advent International portfolio company with operations in 100+ markets, covering more than 90% of the world’s population.

For more information, visit NIQ.com

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Our commitment to Diversity, Equity, and Inclusion

NIQ is committed to reflecting the diversity of the clients, communities, and markets we measure within our own workforce. We exist to count everyone and are on a mission to systematically embed inclusion and diversity into all aspects of our workforce, measurement, and products. We enthusiastically invite candidates who share that mission to join us. We are proud to be an Equal Opportunity/Affirmative Action-Employer, making decisions without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability status, age, marital status, protected veteran status or any other protected class. Our global non-discrimination policy covers these protected classes in every market in which we do business worldwide. Learn more about how we are driving diversity and inclusion in everything we do by visiting the NIQ News Center: https://nielseniq.com/global/en/news-center/diversity-inclusion