Active Directory / Windows Engineer

OSI Digital • Irvine, CA

2d • Onsite

About The Position

OSI Digital, Inc. is seeking an experienced Active Directory / Windows Engineer to join their team. This role involves managing and maintaining Active Directory, leveraging scripts and automation, and supporting critical enterprise applications. The engineer will collaborate with various IT teams and vendors, participate in troubleshooting, and develop technical documentation. The position requires strong analytical and communication skills, with the ability to lead technical discussions and manage complex projects.

Requirements

• 10+ years in enterprise messaging and directory services (Microsoft-focused).
• Proven experience in Exchange Online, Exchange Hybrid, and Active Directory / Azure AD.
• Deep knowledge of M365 tenant configurations, mail flow routing, and domain migration.
• Expertise in identity synchronization (AD Connect, Entra ID) and conditional access.
• Understanding of DNS, SPF, DKIM, DMARC, and MX records.
• Experience with Mimecast or similar email security gateways.
• Familiarity with PowerShell scripting for automation and configuration discovery.
• 10+ years’ experience in large Enterprise environments with thousands of users and hundreds of servers and critical Enterprise Applications.
• Strong understanding of overall IT Infrastructure concepts including data center, compute, storage, networking, security, identity, DR, HA, etc.
• Strong capabilities with MS Office/365 tools including Outlook, Excel, Word, Powerpoint, Visio, Teams, etc.
• Strong analytical and documentation abilities.
• Excellent communication skills to bridge technical and business audiences.
• Capable of leading technical discovery workshops with multiple stakeholders.
• Highly organized, detail-oriented, and capable of managing complex dependencies.

Nice To Haves

• Microsoft Certified: Messaging Administrator Associate or Enterprise Administrator Expert.
• Prior experience with tenant-to-tenant migrations or domain consolidation projects.
• Exposure to international domain management and multi-region M365 environments.
• Experience with email compliance and retention policies under global regulatory frameworks (e.g., KSOX, GDPR).

Responsibilities

• Manage and maintain Active Directory leveraging scripts and automation wherever applicable.
• Supporting and adhering to change management process.
• Collaboration with network, InfoSec, storage, data center, vendors, and other stakeholders in support of the running environment and project initiatives.
• Participation in triage and troubleshooting for all responsible technologies.
• Develop and maintain technical documentation describing the environment.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed