
Systems Admin, Sr.
4 days ago
Job Responsibilities:
- Serve as the technical expert and escalation point for all Active Directory-related incidents and requests.
- Design, implement, and manage complex AD environments including forests, domains, trusts, and replication.
- Maintain and enforce Group Policy Objects (GPOs), including creation, auditing, and lifecycle management.
- Ensure the security and compliance of AD environments through regular reviews, hardening, and monitoring.
- Maintaining Group Policy Objects (GPOs), including creation, testing, deployment, and documentation.
- Design, manage, and troubleshoot AD Sites and Services
- Plan and implement site topology, subnet mapping, replication schedules and bridgehead server configuration.
- Ensure DNS and AD environments are secure. highly available and compliant.
- Support hybrid identity solutions such as Azure AD Connect and ADFS.
- Troubleshoot and resolve replication issues, authentication failures, and DNS-related problems.
- Collaborate with InfoSec and IAM teams to implement RBAC, privileged access management, and security baselines.
- Lead AD upgrades, migrations, consolidations, and DR planning.
- Maintain documentation of AD infrastructure, policies, and procedures.
- Mentor junior team members and provide knowledge sharing and training.
- Act as Second Level Liaison between client and service provider.
- Define, write, and maintain PPM (Process and Procedure Manual) for the project
- Assigned special projects
- Analyze systems, review and implement improvements or upgrades to enhance user experience and to prevent capacity issues
- Participate in rotating On-Call schedule and assist in after-hours Monthly Maintenance
- Primary Lead in training and mentoring less-experienced members of the team.
- Primary Lead in assigned special projects.
Identity And Access Management Mastery
- Extensive experience in designing and implementing complex identity and access management solutions, including RBAC, access governance, and privileged identity management (PIM).
- Proficiency in integrating Azure AD with various Microsoft and non-Microsoft services, including Azure, Office 365, and third-party applications.
Directory Services
- In-depth knowledge of directory synchronization methods, including Azure AD Connect and Azure AD Domain Services.
- Experience in architecting and managing complex directory structures for multi-domain and multi-forest environments.
Scripting And Automation Skills
- Proficiency in scripting and automation with PowerShell, Azure CLI, or other relevant tools for Azure AD management and reporting.
Communication And Documentation
- Excellent communication skills, including the ability to communicate complex technical concepts to non-technical stakeholders.
- Strong documentation skills for creating comprehensive architectural and operational documentation.
Skills, Licenses, Knowledge, Education, And Training Requirements:
- 7+ years of hands-on experience with Microsoft Active Directory in a large-scale enterprise environment.
- Expertise in:
- ADDS, DNS, DHCP, DFS, and GPO management
- Kerberos, LDAP, NTLM, and authentication mechanisms
- AD replication and health monitoring tools
- Strong knowledge of Windows Server (2016/2019/2022).
- Strong experience in troubleshooting AD replication and authentication across multi-site environment.
- Experience with PowerShell scripting and automation for AD tasks.
- Familiarity with security best practices for Active Directory.
- Experience integrating AD with enterprise tools (e.g., MIM, Azure AD, ADFS, Okta, Duo).
- Solid understanding of change management, ITIL processes, and incident escalation procedures.
- Microsoft certifications (e.g., Microsoft Certified: Identity and Access Administrator Associate, MCSE, etc.)
- Experience with hybrid cloud environments and identity federation.
- Familiarity with auditing tools such as Quest Change Auditor or similar.
- Knowledge of Active Directory disaster recovery and backup strategies.
- Experience with DNS management tools and IPAM.
- Experience supporting DNS in hybrid and cloud environments
- Experience in AD disaster recovery, DNS failover, and high availability setups.
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