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# Information Security Engineer - Accreditation of Classified Systems for NATO with security clearance

- **Company:** Wlg
- **Location:** Brussel, Belgium
- **Experience:** Experienced
- **Contract:** Permanent contract
- **Skills:** Data Analysis, Cyber Security, Information Systems
- **Published:** September 13, 2026
- **Apply:** https://www.careerjet.be/jobad/bec9ff9749b1cd2f8dc37ef850c1dc56cb

## About the Role

* A bachelor's degree from a recognised university in a related discipline with two years of relevant experience behind it. Exceptionally, around six years of progressive expertise in this kind of work can stand in place of the degree.
 * At least two years across each of the areas the post turns on: accreditation of major system acquisition or development projects in a large organisation; risk assessment methods and tooling; and the planning, design and implementation of security components.
 * Working knowledge of the organisation's security policy framework and its supporting directives.
 * Time spent in an international environment with both military and civilian colleagues, and a working picture of how the alliance's commands are organised.
 * Relevant certification such as CISA or CISSP.
 * English you can defend a risk position in, in writing and in front of a board.

## Description

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Security · Brussels · Hybrid
Information Security Engineer - Accreditation of Classified Systems for NATO with security clearance
Decide whether a classified system is safe to switch on: the risk assessment, the accreditation documents, the testing and the boards that have to be convinced.
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Before a classified system goes live, somebody has to be able to say what the risks are, what controls answer them, and what is left over. A multinational defence organisation is looking for the engineer who does that work: the assessment, the paperwork that carries it and the conversations with the authorities who sign it off.
What you would be doing

 * Contributing to solution architecture in your areas by identifying which security directives actually apply.
 * Advising on how physical, procedural and technical security controls are applied and operated, and explaining plainly what each one is for.
 * Running security risk assessments for communication and information systems: the threats, the vulnerabilities across every asset, the residual risk and what to do about it.
 * Spotting the risks a candidate technical architecture creates, and proposing alternatives or countermeasures rather than only objections.
 * Scoping, defining and prioritising the requirements that accreditation depends on, to agreed standards and with the evidence written down.
 * Working with stakeholders to prioritise those requirements and to resolve the conflicts between them.
 * Advising project and system managers across the whole life of a system, including input to project proposals and invitations to bid.
 * Planning, requesting and managing the documents accreditation needs - system description, accreditation plan, risk assessment report, security requirement statements, operating procedures and the test and verification plan.
 * Witnessing security testing and agreeing the remediation plan with the accrediting authority.
 * Building durable working relationships with accreditation boards, national authorities, system operating authorities and the internal teams that support the process, and representing the organisation on accreditation matters., Information Security Engineer - Accreditation of Classified Systems for NATO with security clearance
Decide whether a classified system is safe to switch on: the risk assessment, the accreditation documents, the testing and the boards that have to be convinced.
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