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# Senior Cybersecurity Engineer - Ethical Hacking (Reverse Engineering, Antibot)

- **Company:** Nielseniq
- **Location:** Madrid, Spain
- **Contract:** Permanent contract
- **Skills:** Cyber Security, Data Mining, Python (Programming Language), Reverse Engineering, Session Management, WebSocket, Scripting, IDA Pro
- **Published:** July 31, 2026
- **Apply:** https://www.buscojobs.com.es/senior-cybersecurity-engineer-ethical-hacking-reverse-engineering-antibot-en-madrid-ID-364264563

## About the Role

This position offers the chance to impact the reliability and safety of automated data gathering at scale.Compensaciones / Beneficios* Analyze web and mobile apps (APK/IPA) to reveal inner mechanisms and cryptographic functions* Evaluate and bypass anti-bot security protocols (TLS, HTTP/2, HTTP/3, WebSockets, DoH, session management)* Develop Python scripts/frameworks to automate bypass procedures and adapt security measures* Implement stealthy scraping techniques (browser patching, headless evasion, proxy tunneling, human-behavior emulation)* Regularly test, disrupt, and improve tools to stay ahead of defensesResponsabilidades* Reverse Engineering expertise using IDA Pro, Ghidra, or custom solutions* Deep knowledge of security-relevant xqbhyrx protocols (TLS, HTTP/2, WebSockets, DoH)* Advanced Python development skills for robust, scalable solutions* Independent problem-solving with ability to collaborate in a fast-paced team* Ethical standards in security research and vulnerability
handlingRequisitos principales* Flexible working environment* Volunteer time off* LinkedIn Learning* Employee-Assistance-Program (EAP)

## Description

Experteer Overview ¿Es este el puesto que está buscando?Si es así, siga leyendo para obtener más detalles y no olvide enviar su solicitud hoy mismo.In this role you will drive security-focused reverse engineering and anti-bot research to strengthen data extraction systems.You'll dissect applications to understand cryptographic and protocol-level behavior, while developing custom tooling to bypass defenses in ethical, controlled environments.You will collaborate with cross-functional teams to stay ahead of evolving security measures and continuously improve stealthy scraping approaches.This position offers the chance to impact the reliability and safety of automated data gathering at scale.Compensaciones / Beneficios* Analyze web and mobile apps (APK/IPA) to reveal inner mechanisms and cryptographic functions* Evaluate and bypass anti-bot security protocols (TLS, HTTP/2, HTTP/3, WebSockets, DoH, session management)* Develop Python scripts/frameworks to automate bypass procedures and adapt security measures* Implement stealthy scraping techniques (browser patching, headless evasion, proxy tunneling, human-behavior emulation)* Regularly test, disrupt, and improve tools to stay ahead of defensesResponsabilidades* Reverse Engineering expertise using IDA Pro, Ghidra, or custom solutions* Deep knowledge of security-relevant xqbhyrx protocols (TLS, HTTP/2, WebSockets, DoH)* Advanced Python development skills for robust, scalable solutions* Independent problem-solving with ability to collaborate in a fast-paced team* Ethical standards in security research and vulnerability handlingRequisitos principales* Flexible working environment* Volunteer time off* LinkedIn Learning* Employee-Assistance-Program (EAP)


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