Senior Antibot Engineer (Cybersecurity)

Location: Barcelona, Spain

Salary: €46,100–€70,000 per year

Company

Digital Shelf by NIQ develops cybersecurity and data extraction solutions covering billions of products and data points.

What you will do

• Analyze and decompile web and mobile applications, including APK and IPA files, to uncover hidden mechanisms and cryptographic functions.
• Evaluate and bypass anti-bot protections involving TLS, HTTP/2, HTTP/3, WebSockets, DoH, and session management.
• Build robust Python scripts and frameworks that automate bypass procedures and dynamically adapt security measures.
• Modify TLS stacks and patch JavaScript, browsers, and headless browser environments to support stealthy scraping.
• Develop proxy tunneling and human-behavior emulation techniques.
• Continuously test, disrupt, and improve tools against evolving defenses while collaborating with the team.

Requirements

• Expertise in reverse engineering of binary and web code using IDA Pro, Ghidra, or custom-built tools.
• Deep knowledge of web and network protocols, including TLS, HTTP/2, WebSockets, DoH, and related technologies.
• Advanced Python development skills for designing and implementing robust, efficient solutions to complex challenges.
• Ability to push systems to their limits while maintaining high ethical standards.
• Ability to work independently and collaborate effectively in a dynamic team environment.
• Commitment to open communication, continuous learning, and high-quality, efficient code.

Nice to have

• CTF wins, technical write-ups, personal projects, GitHub profiles, or other documentation demonstrating technical achievements.

Culture & Benefits

• Flexible working environment.
• Volunteer time off.
• LinkedIn Learning.
• Employee Assistance Program.
• Inclusive workplace with a commitment to diversity, equity, and inclusion.
• AI may be used in parts of the recruitment process, with human oversight and final hiring decisions.