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Senior Penetration Tester

https://www.soprasteria.com Logo

Sopra Steria

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Location:
Belgium, Brussels

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Category:
IT - Software Development

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Contract Type:
Employment contract

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Salary:

Not provided

Job Description:

As a Penetration Tester, you'll conduct regular, comprehensive security assessments including network, web application, and mobile penetration testing using tools like Metasploit, Burp Suite, and Wireshark to safeguard Sopra Steria's digital transformation services. You'll be integrated in our cybersecurity team working on different projects within the Public sector (European Commission, NATO, Ministries, European Council).

Job Responsibility:

  • Scoping and executing of complex penetrations test across a wide scope of technologies, products, services, and applications and critical infrastructure companies
  • Helping the team to define and improve the internal security testing programme
  • Documenting technical issues both Cyber and IT related during testing assessments
  • Improve our monitoring services by working in purple style exercises and operating in a red team capacity to improve the ability to detect and respond to threats
  • Supporting incident response by providing context and expertise around cyber threats
  • Mentor to our junior & medior colleagues

Requirements:

  • Minimum of 5 years' experience in one or more of the following areas: Penetration Tester, Red/Purple Team Member, Security Engineer
  • Knowledge of technologies up to system level (web frameworks, communications protocols, database systems)
  • Offensive security knowledge of cyber-attack techniques, vulnerabilities, and mitigation strategies
  • Knowledge of penetration testing tools, frameworks, and methodology
  • Skills using Kali Linux, Nmap, PowerShell, Metasploit, Cobalt Strike, OWASP ZAP, Burp Suite
  • Proficiency in scripting
  • Awareness of frameworks such as MITRE ATT&CK and NIST and how they can be applied effectively within an enterprise
  • Familiarity with the latest exploits, tactics, techniques, and procedures (TTP), vulnerability remediation and security trends
  • Cyber security qualifications from Offensive Security, SANS, Pentester Academy, CREST, eLearnSecurity or others

Nice to have:

Fluency in English, French and/or Dutch is a plus

What we offer:
  • Extensive career development opportunities, both local and international
  • Part of a dynamic network of 56,000 professionals at all stages of their careers
  • Wide array of offices to explore

Additional Information:

Job Posted:
October 22, 2025

Employment Type:
Fulltime
Work Type:
On-site work
Job Link Share:
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