Active Directory / Windows Engineer
OSI DigitalIrvine, California, United States
Posted May 7, 2026
Full Time
About the Company
OSI Digital, Inc. provides purpose-built business and technology solutions that optimize performance to enable data-driven outcomes for customers.
Job Description
Active Directory / Windows Engineer role responsible for managing and maintaining Active Directory, supporting and adhering to change management process, and collaborating with network and InfoSec teams. Requires 10+ years of experience in enterprise messaging and directory services, with a strong understanding of overall IT infrastructure concepts and MS Office/365 tools.
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.
