> Markdown version of [/jobs/ext/2812236-senior-penetration-tester-red-team-operator](https://www.wearedevelopers.com/jobs/ext/2812236-senior-penetration-tester-red-team-operator). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Senior Penetration Tester/Red Team Operator

- **Company:** The Nippon Telegraph and Telephone Corporation (NTT)
- **Location:** Belgium
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Active Directory, Software Applications, Software System Penetration Testing, Bash Shell, Cyber Security, Web Browsers, Mobile Application Software, Python (Programming Language), Windows PowerShell, Red Team (Cyber Security), Web Applications, Scripting, Information Technology
- **Published:** September 10, 2026
- **Apply:** https://www.collegerecruiter.com/job/2858144022-senior-penetration-testerred-team-operator

## About the Role

* A minimum of a Bachelor's degree in ICT or equivalent experience.
 * Certifications such as OSCP, CRTO, OSEP, OSED, OSWE, … are highly desirable.
 * 4-5 years of experience in penetration testing/offensive security.
 * Native proficiency in French or Dutch , with excellent verbal and written knowledge of English.
 * Strong personal initiative and a commitment to expanding your technical knowledge.
 * Flexibility and willingness to travel for limited periods if required.
 * Strong teamwork abilities.
 * Creative thinking skills in complex situations (e.g., attempting to bypass security controls).
 * Effective communication skills with clients.
 * Excellent proficiency with scripting languages such as Python, PowerShell, Bash, etc.
 * Advanced experience with common penetration testing frameworks and tools.
 * Possession of a valid driving license (category B) is required.
 * Eligibility and preparedness to obtain NATO clearance.

## Description

* conduct technical exercises including projects initiation, technical security testing and analysis, reporting, and result presentations for our clients on topics such as:

 * Web Application
 * Mobile Application
 * Desktop Application
 * IT Infrastructure
 * Red-Teaming

maintain a broad-based technical knowledge in key information security areas.

perform technical research:

 * become an expert in one or several topics of your interest (Active Directory, Containers, Web Browsers, OT, IoT, …)
 * discover new (previously undiscovered) vulnerabilities (0days), perform responsible disclosure, publish your research
 * develop novel attack techniques useful in Red-Team engagements

Participate to client needs capture and translation into commercial proposals.

Manage and guide junior colleagues in their projects.

Translate complex technical information to both technical and non-technical stakeholders effectively.


## Related Videos

- [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure)
- [How Web AI Can Power the Agentic Web - Jason Mayes (Google)](https://www.wearedevelopers.com/videos/1896-how-web-ai-can-power-the-agentic-web-jason-mayes-google)
- [Old tools, new tricks](https://www.wearedevelopers.com/videos/1916-old-tools-new-tricks)
- [JavaScript? No. Java Scripts! - Scripting with Java](https://www.wearedevelopers.com/videos/2094-javascript-no-java-scripts-scripting-with-java)
- [Privacy-first in-browser Generative AI web apps: offline-ready, future-proof, standards-based](https://www.wearedevelopers.com/videos/1572-privacy-first-in-browser-generative-ai-web-apps-offline-ready-future-proof-standards-based)
- [MCP doesn’t suck — your agent does](https://www.wearedevelopers.com/videos/100202-mcp-doesn-t-suck-your-agent-does)

## Related Articles

- [Best Companies in the Netherlands: Top 25 Companies in 2023 ](https://www.wearedevelopers.com/magazine/193-best-companies-in-the-netherlands-top-25-companies-in-2023)
- [The Netherlands – Europe’s powerhouse for software development?](https://www.wearedevelopers.com/magazine/31-the-netherlands-europe-s-powerhouse-for-software-development)
- [How to land a developer job in Amsterdam](https://www.wearedevelopers.com/magazine/36-how-to-land-a-developer-job-in-amsterdam)
- [9 Ways to Make Money Hacking](https://www.wearedevelopers.com/magazine/333-9-ways-to-make-money-hacking)
- [The 8 Best Code Testing Tools](https://www.wearedevelopers.com/magazine/402-the-8-best-code-testing-tools)
- [How to Find Tech Jobs in Amsterdam](https://www.wearedevelopers.com/magazine/279-how-to-find-tech-jobs-in-amsterdam)