Senior Antibot Engineer

NielsenIQ; Barcelona; On-site; EUR 46,000 - 70,000; Full time

Benefits offered by this job

Flexible working environment

Volunteer time off

Job summary

NielsenIQ's Digital Shelf team in Barcelona seeks a skilled reverse engineer to dissect complex applications, analyze APKs/IPAs, and understand cryptographic protections.

You will tackle anti‑bot mechanisms, by evaluating protocols like TLS, HTTP/2/3, WebSockets, and DoH, and design robust Python solutions for scalable data extraction.

This role rewards rigorous problem solving, collaboration in a fast‑moving team, and a strong ethical approach to security research.

Qualifications

• Reverse engineering of binaries and web code to understand core functionalities.
• Bypass and assess anti-bot and security protocols.
• Develop robust Python solutions for complex challenges.
• Collaborate in a dynamic team with open communication and continuous learning.

Responsibilities

• Analyze web and mobile apps (APK/IPA) to uncover hidden mechanisms and cryptographic functions.
• Evaluate and bypass security protocols like TLS, HTTP/2, WebSockets, DoH, and session management.
• Regularly test, disrupt, and improve tools to stay ahead of evolving defenses.

Skills

Reverse Engineering

Ghidra

Python

Cryptography

Team collaboration

Tools

IDA Pro

Ghidra

Job description

• Compensation: EUR 46,100 - EUR 70,000 - yearly

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

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

Qualifications

• Passionate Code Warrior:
  You thrive on pushing systems to their limits while upholding the highest ethical standards. Reverse Engineering isn’t just a skill it’s your creative playground.
• 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.
• 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

If you’re a dedicated code warrior with a passion for dissecting and rebuilding intricate systems and you consistently deliver high‑quality, efficient code Join Digital Shelf by NIQ and help us reshape the digital frontier.

• Flexible working environment
• Volunteer time off

NIQ may utilize artificial intelligence (AI) tools at various stages of the recruitment process, including résumé screening, candidate assessments, interview scheduling, job matching, communication support, and certain administrative tasks that help streamline workflows. These tools are intended to improve efficiency and support fair and consistent evaluation based on job‑related criteria. All use of AI is governed by NIQ’s principles of fairness, transparency, human oversight, and inclusion. Final hiring decisions are made exclusively by humans. NIQ regularly reviews its AI tools to help mitigate bias and ensure compliance with applicable laws and regulations. If you have questions, require accommodations, or wish to request human review were permitted by law, please contact your local HR representative. For more information, please visit NIQ’s AI Safety Policies and Guiding Principles: https://nielseniq.com/global/en/info/niqs-ai-safety-policies/

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

Want to keep up with our latest updates?

Our commitment to Diversity, Equity, and Inclusion

At NIQ, we are steadfast in our commitment to fostering an inclusive workplace that mirrors the rich diversity of the communities and markets we serve. We believe that embracing a wide range of perspectives drives innovation and excellence.All employment decisions at NIQ are made without regard to race, color, religion, sex (including pregnancy, sexual orientation, or gender identity), national origin, age, disability, genetic information, marital status, veteran status, or any other characteristic protected by applicable laws.We invite individuals who share our dedication to inclusivity and equity to join us in making a meaningful impact.To learn more about our ongoing efforts in diversity and inclusion, please visit the https://nielseniq.com/global/en/news-center/diversity-inclusion