Security Architect - Freelance

Context

• Need to reinforce a leading gas infrastructure group's cybersecurity and architecture capabilities in response to growing threats and recent worldwide geopolitical disturbances.
• Client: a fully independent gas infrastructure group active in gas transmission, storage, and LNG terminalling.
• Department: Digital (DIGITAL) / Competence Center Architecture, with the Competence Center Cybersecurity as one of the main stakeholders.
• The role aims to turn high-level security measures into practical implementations and guidelines, while keeping user experience in mind.

Missions

• Develop, maintain and evolve the Security Architecture
• Define and maintain security reference architectures, principles, and blueprints
  • Align them with architectural strategies such as Data and Cloud strategies
• Ensure secure-by-design principles are considered in new developments
• Promote the use of Zero Trust principles
• Document and communicate security architecture standards
  • Help teams adopt coherent security principles
• Shape the long-term security capability and technology roadmap
• Align security guidelines and architecture with regulatory frameworks
  • Translate guidance into practical principles and guidelines ready to use by development teams
  • Cover NIS2, ISO 27001, and GDPR
• Provide guidance for audit and compliance activities
• Review existing architecture and propose improvements to mature IT resilience
• Evaluate and select enterprise-level security platforms
  • IAM
  • PAM
  • SIEM/SOAR
  • CSPM
  • EDR
  • WAF
  • DLP
• Define and follow up PoCs and pilot programs for emerging security technologies
• Work closely with other architects to align all aspects of architecture
  • Enterprise architects
  • Business domain architects
  • Data architects
  • Infrastructure architects
  • Technical architects
  • Quality architects

Organisation & Daily Work

• Work inside the Competence Center Architecture
• Collaborate closely with enterprise architects, business domain architects, data architects, infrastructure architects, technical architects, and quality architects
• The Competence Center Cybersecurity is one of the main stakeholders

Working Conditions

• Mission location: Headquarters, Avenue des Arts 31, 1040 Brussels
• Work regime: 100%
• Number of days: 220
• Assignment type: Time and material (Daily based contract)
• Preferred start date: 01/06/2026
• Preferred end date: 31/05/2027
• The attachment states a start date of December 2026

Technical Skills

• Broad expertise across multiple security domains: cloud security, network and infrastructure security, application and API security, container security, data protection and encryption, security monitoring
• Experience defining secure architectures for hybrid and multi-cloud environments
• Understanding of regulatory frameworks: NIS2, ISO 27001, GDPR
• Familiarity with the utility/energy sector, such as asset management, metering, and field operations
• Experience in IT/OT environments

Tools & Environment

• Azure
• IAM
• PAM
• SIEM
• SOAR
• CSPM
• EDR
• WAF
• DLP
• Sparx Enterprise Architect
• TOGAF
• SABSA
• CISSP
• CISM
• CCSP
• ITIL
• AWS
• Enterprise Architecture frameworks

Soft Skills

• Excellent communication skills to collaborate with diverse stakeholders

Languages

• French (FR)
• Dutch (NL)
• English (EN)

Education & Certifications

• A master's degree in civil engineering, commercial engineering, or any scientific orientation
• Certifications such as TOGAF, SABSA, CISSP, CISM, CCSP, ITIL, AWS/Azure, or Enterprise Architecture frameworks are strong assets

1. 5+ years of experience in security architecture
2. Broad expertise across multiple security domains: cloud security, network and infrastructure security, application and API security, container security, data protection and encryption, security monitoring
3. Experience defining secure architectures for hybrid and multi-cloud environments
4. Understanding of regulatory frameworks: NIS2, ISO 27001, GDPR
5. Familiarity with the utility/energy sector, such as asset management, metering and field operations
6. Experience in IT/OT environments
7. Experience with tools such as Azure, IAM, PAM, SIEM, SOAR, CSPM, EDR, WAF, DLP, Sparx Enterprise Architect
8. Knowledge of frameworks and certifications including TOGAF, SABSA, CISSP, CISM, CCSP, ITIL, AWS, Enterprise Architecture frameworks
9. Excellent communication skills to collaborate with diverse stakeholders
10. Languages: French (FR), Dutch (NL), English (EN)
11. A master's degree in civil engineering, commercial engineering or any scientific orientation
12. Certifications such as TOGAF, SABSA, CISSP, CISM, CCSP, ITIL, AWS/Azure or Enterprise Architecture frameworks are strong assets