Security Architect – OT & Industrial Cybersecurity

Our client, a leading organization in the transport and infrastructure sector, is seeking a Security Architect to translate strategic directions into robust technical solutions. This role ensures regulatory compliance and the effectiveness of security measures across IT, OT, cloud, and network environments to guarantee business resilience and continuity.

• Design and formalize the target security architecture by integrating Security by Design and Privacy by Design principles.
• Conduct technical and architectural risk assessments on infrastructures, industrial systems, and business applications.
• Define security architecture standards and principles aligned with strategic directions and regulatory frameworks.
• Lead security intake processes and architecture committees to ensure solution alignment with the target vision.
• Support project and business teams in integrating security requirements for complex IT/OT convergence and cloud solutions.
• Monitor evolving threats and technologies to propose continuous improvements in detection, response, and identity management.

• 5+ years of experience in Cybersecurity Architecture or Risk Assessment within complex hybrid environments (IT, OT, Cloud).
• Advanced knowledge of security frameworks and regulations including ISO 27001, NIS2, GDPR, and CyFun.
• Technical expertise in Network Architecture, Cloud Security, and Zero Trust models.
• Hands-on experience with ICAM (IAM, IGA, PAM) and Cryptography (PKI, key management).
• Proficiency in XDR, SIEM, and security monitoring solutions.
• Practical experience with architecture modeling tools such as ArchiMate.
• Professional certification in IEC 62443.
• Bachelor’s degree in Cybersecurity, Computer Science, Engineering, or a related field.
• Structured, critical, and solution-oriented mindset with the ability to interact with diverse stakeholders.
• You are fluent in Dutch or French with a C1 level of English.

Nice to Haves

• Master’s degree in a relevant field.
• Professional certifications such as CISSP, CISM, CISA, SABSA, or ISO 27001 Lead Implementer.
• Experience with secure SAP integration and Artificial Intelligence models.

• Start date: 11/05/2026
• Duration: until 31/03/2027
• Work regime: Full-time (1 FTE)
• Location: Brussels
• Working model: Hybrid (minimum 1 day per week onsite)
• Contract: open to both permanent employees and freelancers