10/15/2026 updated

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Senior Security Engineer | IAM, RBAC, PKI & Microsoft Entra ID/Azure AD Specialist

Groningen, Netherlands
Only remote
MBO level 4 vocational diploma in System Administration
Groningen, Netherlands
Only remote
MBO level 4 vocational diploma in System Administration

Profile attachments

CV_Mario_Charry_Security_Engineer_EN.pdf

About me

Senior Security Engineer specialising in IAM, Microsoft Entra ID and PKI. Experienced in regulated environments at RDW, NATO and the Dutch Ministry of Defence. I bring a practical, structured approach to securing access, improving processes and keeping critical systems reliable.

OAuth 2.0Tailwind CSSISO 27001Active DirectoryMicrosoft AzureLinuxDomain Name System (DNS)Hyper-VInformation Technology Infrastructure Libraries (ITIL)Identity Management SystemsKey ManagementMySQLNetwork Planning and DesignOpenIDPublic Key InfrastructureWindows PowerShellScrum MethodologyRole-Based Access ControlOpenid ConnectAzure Active DirectoryNext.jsServer AdministrationSingle Sign-OnTypeScriptWindows Deployment ServicesWordPressSSL Certificate ManagementCyberarkOffice365GitMicrosoft InTuneCloudflareServicenowVMware
Security Engineer focused on Identity & Access Management (IAM), with experience in regulated environments at RDW, NATO and the Dutch Ministry of Defence.

• Identity security: Microsoft Entra ID / Azure AD, Active Directory, RBAC, least privilege, Conditional Access and identity lifecycle management.
• Authentication: SSO, SAML, OAuth 2.0, OpenID Connect and ADFS.
• Privileged access: CyberArk, PAM processes, administrative accounts and service principals.
• PKI: certificate lifecycle management, KeyTalk, HSMs, key management and TLS hardening.
• Automation: PowerShell and Microsoft Graph for access administration, reporting and operational improvements.
• Security operations: identity incident investigation, audit logging and application of ISO 27001 controls.

Experience

Professional experience10+ years
Freelancer since2021

Languages

EnglishFluentDutchNative speaker

Project history

Freelance website and webshop development

ITComSol
Design, development and security of websites and webshops for businesses. Developed and maintained websites/webshops using WordPress, Elementor, Next.js, TypeScript and Tailwind CSS. Configured hosting, DNS, Cloudflare, MFA, DDoS protection and payment methods such as Mollie/Stripe, and prepared handover documentation.

Security Engineer (IAM/RBAC, PKI & Platform Security)

RDW
Security engineering in a public-sector, regulated environment focused on IAM/RBAC, Microsoft Entra ID/Azure AD, privileged access, PKI, certificate management, trust services, key management, IAM platform operations and process improvement. Managed and improved IAM processes, authorisation structures, roles and access rights using RBAC and least-privilege principles. Worked with Microsoft Entra ID/Azure AD, Active Directory, AGPM, Enterprise Applications, App Registrations, ADFS and Conditional Access. Managed and supported security and trust services including PKI, TLS hardening, F5/load balancing, PAM, key management, HSMs and certificate-dependent processes using KeyTalk. Used PowerShell and Microsoft Graph for IAM administration, analysis, reporting and automation. Worked in ServiceTeam SED, a multidisciplinary DevOps/Agile infrastructure team using Scrum.

Global IT Local Engineer Information Systems (IAM / Infrastructure)

Imperial Brands
Enterprise IT role responsible for local infrastructure, audit/compliance, Microsoft technologies and service improvement. Managed on-premises and Azure environments and supported IAM, RBAC and authorisation for users and roles including AGDLP principles. Worked with core Microsoft technologies, Active Directory, Azure/Intune/Azure AD, Office 365, endpoint security, Zscaler and MDM. Supported audit, compliance and ISO 27001-related operational processes including access management, logging, CMDB and asset management, documentation, incident follow-up and controlled changes. Contributed to operations and improvements during the transition from on-premises services to Azure cloud environments.

Support Engineer

NATO Communications and Information Agency (NCI Agency), Mons
System support and maintenance in a highly secure NATO environment. Managed and maintained on-premises Active Directory including access management and authorisation structures using IAM/RBAC and AGDLP principles. Operated, administered, tested and maintained IT systems in networked and distributed environments. Interpreted and applied ISO 27001 controls within the managed environment. Supported NATO Functional Area Services and the NATO Nuclear Command, Control and Reporting System (NNCCRS). Performed problem analysis, technical documentation, software implementation, configuration, testing and operational handover for critical information systems at NATO and national sites.

Senior System and Network Manager

Dutch Ministry of Defence, Assen
Senior operational and advisory role for a battalion of approximately 400 personnel, including team supervision and operational deployments. Designed network and Active Directory configurations applying AGDLP, IAM and RBAC principles. Managed cryptographic keys and assets, administered SharePoint and P3SM applications and worked to ITIL/ITSM processes and SLA agreements. Advised battalion staff on command-and-control systems, infrastructure, network management and security-critical ICT processes. Mentored junior system/network managers and coordinated technical work within a six-person team. Completed two operational deployments as a system/network manager.

Junior System/Network Manager and Incident Manager

Dutch Ministry of Defence
Junior system/network manager and incident manager in operational and security-critical environments. Worked with on-premises Active Directory and administered access rights. Configured LAN/WAN, switches, routers and satellite communications; monitored networks and servers and worked with AD/SCCM/SCOM and Windows Deployment Services. Installed and managed Windows, Linux/UNIX, VMware, Hyper-V, VirtualBox, Synology NAS, PowerShell, MySQL, backups and data recovery. Handled incident and service management, supervised military personnel and built network backbones and topologies.

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