10775 – Sr. Engineering Systems Administrator (Active Directory)

Fountain Valley, CA

Full Time

Infrastructure

Experienced

10775 – Sr. Engineering Systems Administrator (Active Directory)
Location – Fountain Valley, CA

Essential Functions:

Administer and maintain Active Directory (AD) infrastructure, including domain controllers, replication, group policies, organizational units (OUs), and user/group management.
Create, modify, and delete user accounts, groups, shared drives, and organizational units in Active Directory. Manage permissions, access rights, and security group memberships.
Design, implement, and troubleshoot Group Policy Objects (GPOs) for user and computer configurations across the organization.
Manage Azure AD configuration, including security policies, SSO, application integration, account synchronization, and MFA
Manage multiple O365 tenants, including migrations, account policies, OneDrive, SharePoint Online, Teams, MPIP, and mobile device management.
Implement and enforce security protocols for user authentication, access control, and password policies. Regularly audit AD permissions to ensure compliance with internal security standards.
Perform regular health checks on Active Directory, identifying and resolving any performance or security issues. Ensure high availability and proper replication between domain controllers.
Develop and maintain Active Directory backup and disaster recovery plans. Ensure regular system backups and conduct recovery tests to verify AD system integrity.
Provide timely resolution for Active Directory-related incidents, including login failures, replication issues, and DNS problems. Investigate and resolve complex technical issues.
Work closely with other IT teams (e.g., Networking, Systems, Security) to plan and implement solutions for various enterprise-level initiatives.
Document AD processes, configurations, and troubleshooting steps.
Plan and execute Active Directory migrations and upgrades with minimal downtime.
Administration and management of Windows Servers through full life cycle.
Support and adhere to change management process.
Perform scripting of administration tasks and reporting using PowerShell.
Develop and maintain technical documentation describing the environment.

Requirements:

BA/BS in IT, Computer Science, etc., or equivalent directly-related experience
7+ years of experience in large Enterprise environments with 1000+ user base and 500+ servers and critical Enterprise Applications instances.
Strong understanding of overall IT Infrastructure concepts including data center, compute, storage, networking, security, identity, DR, HA, etc.
Advanced knowledge of Active Directory services, DNS, DHCP, SMB, Microsoft Exchange, and related technologies.
Expert level PowerShell experience, creating and modifying custom scripts to report and perform bulk actions on AD objects, systems, and integrated technologies.
Working experience with AD Federation Services (ADFS), Azure Active Directory, and other identity management and SSO solutions.
Experience with hybrid environments (On-premises Active Directory and Azure AD).
Experience with AD migration tools and best practices.
Extensive administration of on-premises Active Directory including capture of FSMO roles and Forest/Domain level upgrades.
Expert level technical knowledge and administration experience of Windows Server OS
Working knowledge of Windows Server authentication methods and integration of 3rd party applications (ADFS, LDAP, SAML, OAUTH, Kerberos)
Strong capabilities with MS Office/365 tools including Outlook, Excel, Word, PowerPoint, Visio, Teams, etc.

Certifications:

MCSA preferred
MCSE preferred

Salary Range - $98,060 - $151,008

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10775 – Sr. Engineering Systems Administrator (Active Directory)

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