Security Consultant

Asenium is looking for a Senior Security Consultant to strengthen a security team in a financial services environment. You will oversee security in business projects, challenge implemented controls, and coordinate NIST evidence and maturity reporting.

Assignment: ASAP–31 December 2026.

Work setup: Hybrid – Brussels, Belgium. 50% on-site / 50% homeworking.

Responsibilities:

• Ensure security requirements are integrated early into business initiatives and projects.
• Complete and review application security assessments with delivery teams.
• Assess change compliance and support the CISO’s GO/NO-GO release decisions.
• Coordinate with subject matter experts to collect evidence for NIST controls.
• Submit NIST control evidence to the central security team.
• Negotiate evidence acceptance criteria with the central team.
• Report progress on NIST controls and escalate issues to IT management.

Must-have requirements:

• At least 5 years of relevant experience, with knowledge of IT production or networks in technical and/or functional roles.
• Previous software development experience and a good understanding of SDLC activities.
• Knowledge of network security fundamentals.
• Good understanding of NIST and ISO 27001 security frameworks.
• Foundational knowledge of IT risk assessment and management.
• ISO 27001 certification or equivalent.
• Master’s degree, or bachelor’s degree with experience.
• Ability to work autonomously, collaborate across teams, and challenge security measures.
• Fluent French or Dutch, and a good command of English.