OS & Identity Platform SME
Only Candidates holding EU citizenship or a Dutch passport are eligible to apply.
About the Role
As an OS & Identity Platform SME-– Windows Server · Red Hat RHEL · Active Directory PKI, you will take ownership of critical enterprise identity and operating system platforms that underpin authentication, access, and system stability across the organization. This is a high-impact, hands-on role focused on maintaining the health, security, and resilience of Active Directory, Windows Server, and Red Hat Enterprise Linux environments.
You will operate at the heart of enterprise infrastructure, ensuring seamless authentication services, resolving complex cross-platform issues, and safeguarding identity services that business operations depend on every day.
In This Role, You Will:
- Monitor and resolve Active Directory replication and domain controller health issues to ensure directory consistency and availability
- Troubleshoot Kerberos authentication failures, including time skew, SPN conflicts, and ticketing errors
- Maintain SYSVOL integrity and manage Group Policy (GPO) changes across enterprise environments
- Respond to and remediate large-scale authentication outages impacting multiple systems and services
- Diagnose and fix Windows Server and Red Hat RHEL service failures, including performance degradation and resource saturation
- Execute daily and weekly health checks across domain controllers, RHEL hosts, and PKI infrastructure
- Maintain and continuously update a dependency map covering DNS, VMware, Active Directory, and backup systems
- Collaborate with infrastructure, security, and cloud teams to resolve complex, cross-domain incidents
Work Model
We believe hybrid work is the way forward as we strive to provide flexibility wherever possible. Based on this role’s business requirements, this is a hybrid position. Regardless of your working arrangement, we support a healthy work-life balance through our wellbeing initiatives.
The working arrangements may evolve depending on client and project requirements.
What You Need to Have to Be Considered
- 5+ years of experience in enterprise identity and operating system operations
- Strong expertise in Active Directory — replication, FSMO roles, SYSVOL, ADSI
- Deep understanding of Kerberos authentication — ticket lifecycle, SPN management, NTP synchronization, delegation
- Hands-on experience with Group Policy — GPO creation, RSoP analysis, ADMX templates
- Solid experience in PKI (ADCS) — certificate authority hierarchy, certificate templates, CRL/OCSP management
- Advanced knowledge of Windows Server — AD DS, DNS, DHCP, Event Viewer, Performance Monitor
- Strong experience with Red Hat Enterprise Linux (RHEL) — systemd, SSSD/realmd (AD integration), SELinux, firewalld
- Proficiency in PowerShell and Bash scripting for automation and troubleshooting
- Proven ability to diagnose and resolve complex identity and OS-level issues in enterprise environments
These Will Help You Stand Out
- Experience managing large-scale, multi-domain AD environments
- Exposure to hybrid identity setups or integration with cloud identity providers
- Familiarity with automation and configuration management tools
- Strong background in incident management and root cause analysis (RCA)
- Knowledge of ITIL frameworks and structured operational processes
We’re excited to meet professionals who understand the critical nature of identity platforms and can ensure their reliability at scale. Even if you meet most—but not all—requirements, we encourage you to apply.
What We Offer (Netherlands)
At Cognizant Netherlands, we provide an environment that supports your technical growth and operational excellence:
- Competitive salary
- Access to Udemy and Cognizant Academy
- NS business card
- 25 paid holidays per year
- Laptop and smartphone
- Pension scheme
- Technology-driven organization
- Open team spirit
- International working environment
Contact the Recruiter
Megha Nagpal
[email protected]
+31 6 2715 5643
OS & Identity Platform SME
Only Candidates holding EU citizenship or a Dutch passport are eligible to apply.
About the Role
As an OS & Identity Platform SME-– Windows Server · Red Hat RHEL · Active Directory PKI, you will take ownership of critical enterprise identity and operating system platforms that underpin authentication, access, and system stability across the organization. This is a high-impact, hands-on role focused on maintaining the health, security, and resilience of Active Directory, Windows Server, and Red Hat Enterprise Linux environments.
You will operate at the heart of enterprise infrastructure, ensuring seamless authentication services, resolving complex cross-platform issues, and safeguarding identity services that business operations depend on every day.
In This Role, You Will:
- Monitor and resolve Active Directory replication and domain controller health issues to ensure directory consistency and availability
- Troubleshoot Kerberos authentication failures, including time skew, SPN conflicts, and ticketing errors
- Maintain SYSVOL integrity and manage Group Policy (GPO) changes across enterprise environments
- Respond to and remediate large-scale authentication outages impacting multiple systems and services
- Diagnose and fix Windows Server and Red Hat RHEL service failures, including performance degradation and resource saturation
- Execute daily and weekly health checks across domain controllers, RHEL hosts, and PKI infrastructure
- Maintain and continuously update a dependency map covering DNS, VMware, Active Directory, and backup systems
- Collaborate with infrastructure, security, and cloud teams to resolve complex, cross-domain incidents
Work Model
We believe hybrid work is the way forward as we strive to provide flexibility wherever possible. Based on this role’s business requirements, this is a hybrid position. Regardless of your working arrangement, we support a healthy work-life balance through our wellbeing initiatives.
The working arrangements may evolve depending on client and project requirements.
What You Need to Have to Be Considered
- 5+ years of experience in enterprise identity and operating system operations
- Strong expertise in Active Directory — replication, FSMO roles, SYSVOL, ADSI
- Deep understanding of Kerberos authentication — ticket lifecycle, SPN management, NTP synchronization, delegation
- Hands-on experience with Group Policy — GPO creation, RSoP analysis, ADMX templates
- Solid experience in PKI (ADCS) — certificate authority hierarchy, certificate templates, CRL/OCSP management
- Advanced knowledge of Windows Server — AD DS, DNS, DHCP, Event Viewer, Performance Monitor
- Strong experience with Red Hat Enterprise Linux (RHEL) — systemd, SSSD/realmd (AD integration), SELinux, firewalld
- Proficiency in PowerShell and Bash scripting for automation and troubleshooting
- Proven ability to diagnose and resolve complex identity and OS-level issues in enterprise environments
These Will Help You Stand Out
- Experience managing large-scale, multi-domain AD environments
- Exposure to hybrid identity setups or integration with cloud identity providers
- Familiarity with automation and configuration management tools
- Strong background in incident management and root cause analysis (RCA)
- Knowledge of ITIL frameworks and structured operational processes
We’re excited to meet professionals who understand the critical nature of identity platforms and can ensure their reliability at scale. Even if you meet most—but not all—requirements, we encourage you to apply.
What We Offer (Netherlands)
At Cognizant Netherlands, we provide an environment that supports your technical growth and operational excellence:
- Competitive salary
- Access to Udemy and Cognizant Academy
- NS business card
- 25 paid holidays per year
- Laptop and smartphone
- Pension scheme
- Technology-driven organization
- Open team spirit
- International working environment
Contact the Recruiter
Megha Nagpal
[email protected]
+31 6 2715 5643
Acerca de Cognizant
Cognizant (Nasdaq: CTSH) es un creador de soluciones de IA y proveedor de servicios tecnológicos que conecta la inversión en IA con el valor empresarial mediante el desarrollo de soluciones de IA full‑stack para sus clientes. Su profundo conocimiento de la industria, junto con su experiencia en procesos e ingeniería, permite incorporar el contexto único de cada organización en sistemas tecnológicos que amplifican el potencial humano, generan resultados tangibles y mantienen a las empresas a la vanguardia en un entorno en constante cambio. Más información en cognizant.ai o @cognizant.
Información adicional sobre el empleo
La información sobre la compensación es exacta en la fecha de publicación de este anuncio. Cognizant se reserva el derecho de modificar esta información en cualquier momento, de conformidad con la legislación aplicable.
Es posible que se solicite a los solicitantes que asistan a entrevistas de forma presencial o mediante videoconferencia. Asimismo, durante cada entrevista, los candidatos podrán estar obligados a presentar un documento de identidad válido emitido por el estado o por el gobierno.
Cognizant es un empleador que ofrece igualdad de oportunidades. Su solicitud y candidatura no se evaluarán en función de la raza, el color, el sexo, la religión, el credo, la orientación sexual, la identidad de género, el origen nacional, la discapacidad, la información genética, el embarazo, la condición de veterano ni cualquier otra característica protegida por las leyes federales, estatales o locales.
