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
关于高知特 (Cognizant)
高知特(Cognizant)（纳斯达克代码：CTSH）作为一家AI Builder和相关技术服务提供商，致力于通过打造全栈AI解决方案，帮助企业将人工智能投资转化为实际价值。公司凭借深厚的行业经验、流程优化和工程技术专长，将企业独特的业务场景融入科技系统，赋能组织释放人才潜能，推动切实成果，并帮助全球企业在瞬息万变的环境中保持领先。如需了解更多详情，敬请访问 cognizant.ai 或关注@cognizant。
补充雇佣信息
薪酬信息截至本职位发布之日为准。Cognizant 保留在适用法律允许的范围内随时修改该信息的权利。
申请人可能需要通过现场面试或视频会议的方式参加面试。此外，候选人在每次面试时可能需要出示其当前所在州或政府签发的有效身份证件。
Cognizant 是一家提供平等就业机会的雇主。在招聘过程中，您的申请和候选资格不会因种族、肤色、性别、宗教、信仰、性取向、性别认同、国籍、残疾、遗传信息、怀孕、退伍军人身份或任何其他受联邦、州或地方法律保护的特征而受到影响。
