Security - Cybersecurity expert

Senior Cyber Security Specialist – IT & OT

What if your security expertise didn’t just support systems — but actively shaped how an organisation protects its most critical digital and operational assets?

For one of our long-term clients, we’re searching for a Senior Cyber Security Specialist to strengthen enterprise-wide security across both IT and OT domains. This is a high-impact role where you’ll work closely with technical teams, leadership, and security operations to reduce risk and elevate cyber maturity.
The role

You’ll act as a key security partner across the organisation, combining hands-on expertise with strategic influence.

Your responsibilities include:

Working with internal stakeholders to roll out security controls and mitigations across IT and OT landscapes
Handling vulnerabilities, weaknesses, and incidents escalated by the Security Operations Centre
Performing security assessments and technical reviews for both new developments and existing platforms
Coordinating and managing penetration testing activities for applications and infrastructure
Advising project and architecture teams on secure technology choices and design principles
Leading phishing simulations and contributing to security awareness initiatives
Reviewing and validating firewall configurations and network security controls
Providing security input to governance and decision-making at senior level
Requirements
Your profile

We’re looking for someone with a strong security foundation and the confidence to operate at both technical and organisational levels.

Ideally, you bring:

A master’s degree in computer science, IT, or cybersecurity
Extensive professional experience (10+ years), including a solid background in information security
Practical experience in security assessments, testing, or security operations
Broad knowledge of cloud security, network security, and communication protocols
A strong grasp of identity and access management (IAM) concepts and solutions
Exposure to OT security environments, or a clear motivation to deepen this expertise
Relevant cybersecurity certifications (an advantage, not a must)
Strong communication skills and a collaborative mindset
Excellent organisational abilities and attention to detail
A pragmatic, adaptable approach with a focus on results
Fluency in English; knowledge of Dutch and/or French is highly beneficial
Benefits
What’s on offer

You’ll join a stable, well-established organisation that invests in security, technology, and people — with projects spanning critical infrastructure and large-scale digital environments.

The package includes:

A competitive salary aligned with seniority and expertise
Continuous learning and development opportunities
Comprehensive insurance coverage
Company car with charging card or alternative mobility options (including bike leasing)
Meal and eco vouchers, allowances, bonus payments
Smartphone, internet compensation, and modern work tools
Extra paid leave, seniority days, and flexible working arrangements
Access to a broad employee benefits platform (culture, sports, travel, and more)
If you’re ready to influence security strategy while staying close to real-world technical challenges , this role offers the scope and impact you’re probably looking for.