Senior Anti-Bot & Security 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

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.