Job DescriptionSenior Cyber Security Specialist – IT & OTWhat 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 roleYou’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 landscapesHandling vulnerabilities, weaknesses, and incidents escalated by the Security Operations CentrePerforming security assessments and technical reviews for both new developments and existing platformsCoordinating and managing penetration testing activities for applications and infrastructureAdvising project and architecture teams on secure technology choices and design principlesLeading phishing simulations and contributing to security awareness initiativesReviewing and validating firewall configurations and network security controlsProviding security input to governance and decision-making at senior levelRequirementsYour profileWe’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 cybersecurityExtensive professional experience (10+ years), including a solid background in information securityPractical experience in security assessments, testing, or security operationsBroad knowledge of cloud security, network security, and communication protocolsA strong grasp of identity and access management (IAM) concepts and solutionsExposure to OT security environments, or a clear motivation to deepen this expertiseRelevant cybersecurity certifications (an advantage, not a must)Strong communication skills and a collaborative mindsetExcellent organisational abilities and attention to detailA pragmatic, adaptable approach with a focus on resultsFluency in English; knowledge of Dutch and/or French is highly beneficialBenefitsWhat’s on offerYou’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 expertiseContinuous learning and development opportunitiesComprehensive insurance coverageCompany car with charging card or alternative mobility options (including bike leasing)Meal and eco vouchers, allowances, bonus paymentsSmartphone, internet compensation, and modern work toolsExtra paid leave, seniority days, and flexible working arrangementsAccess 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.