Senior Penetration Tester/Red Team Operator

The Nippon Telegraph and Telephone Corporation (NTT); Belgique; On-site; EUR 70,000 - 90,000; Full time

Benefits offered by this job

Annual bonus

Lunch vouchers

Company car or Mobility budget

Hospitalisation insurance

31 days of holiday

Job summary

The Nippon Telegraph and Telephone Corporation (NTT) is looking for a Senior Penetration Tester/Red Team Operator in Belgium. This role involves conducting security tests, managing junior colleagues, and translating technical information for stakeholders. Candidates should have a Bachelor's degree in ICT, relevant certifications, and 4–5 years of experience in penetration testing. NTT offers a hybrid work environment, an annual bonus, lunch vouchers, and comprehensive medical insurance among other benefits.

Qualifications

• 4–5 years of experience in penetration testing/offensive security.
• Certifications such as OSCP, CRTO, OSEP, OSED, OSWE are highly desirable.
• Native proficiency in French or Dutch, with excellent verbal and written knowledge of English.
• Possession of a valid driving license (category B) is required.
• Eligibility and preparedness to obtain NATO clearance.

Responsibilities

• Conduct technical exercises for security testing and analysis.
• Manage and guide junior colleagues in their projects.
• Translate complex technical information to stakeholders.

Skills

Penetration testing

Scripting languages (Python, PowerShell, Bash)

Technical research

Collaboration

Client communication

Education

Bachelor's degree in ICT or equivalent

Tools

Penetration testing frameworks and tools

Job description

Senior Penetration Tester/Red Team Operator

What will you do

• 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.

What we are looking for in candidates

• 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.

What we offer

• Contract of unlimited duration.
• Annual bonus.
• Lunch vouchers.
• Forfaitary compensation for professional costs.
• Company car or Mobility budget.
• Hospitalisation insurance and ambulant care at premium level.
• Group and disability insurance.
• Possibility to order a lease bike.
• 31 days of holiday plus seniority days.
• Data and voice subscription + contribution for a smartphone device.
• Contribution for internet at home.
• Contribution for IT equipment.
• Private use of your NTT laptop.

Workplace type

Hybrid Working.

Equal Opportunity Employer

NTT DATA is proud to be an Equal Opportunity Employer with a global culture that embraces diversity. We are committed to providing an environment free of unfair discrimination and harassment. We do not discriminate based on age, race, colour, gender, sexual orientation, religion, nationality, disability, pregnancy, marital status, veteran status, or any other protected category. Join our growing global team and accelerate your career with us.