Systems Administrator

About the Role We are seeking a Systems Administrator to support and enhance Microsoft 365 and Exchange Online services for a collaborative enterprise environment in Brentwood, CA. This role focuses on maintaining reliable messaging and content services, resolving advanced technical issues, and ensuring platform configurations meet established operational standards. The ideal candidate has hands-on cloud administration experience, strong troubleshooting ability, and a disciplined approach to documentation and service delivery. What You'll Do

• Manage Microsoft 365 services across the unified communications environment, ensuring stable performance and consistent user support.
• Provide advanced Tier 2 and Tier 3 troubleshooting for email, collaboration, and content-related incidents, driving issues through to resolution.
• Administer Exchange Online in a cloud-based environment connected to on-premises Active Directory infrastructure.
• Oversee mailbox setup, account changes, deprovisioning activities, and the full lifecycle of user and shared mailbox administration.
• Configure and maintain distribution groups, mailbox permissions, connectors, transport rules, accepted domains, and other mail flow components.
• Investigate delivery problems using message tracing and related diagnostic tools to identify root causes and restore service quickly.
• Carry out approved configuration updates, perform validation testing, and confirm outcomes align with documented technical requirements.
• Develop and maintain runbooks, operational procedures, and support documentation to improve consistency and knowledge sharing.
• Partner with infrastructure and cross-functional teams on messaging-related initiatives, including retention, archiving, and mailbox policy administration.
• Use PowerShell to automate administrative tasks, streamline support activities, and improve operational efficiency. What We're Looking For
• At least 2 years of experience administering Exchange Online and Microsoft 365 in an enterprise setting.
• Hands-on knowledge of Microsoft 365 services, including messaging, collaboration, and content management administration.
• Experience supporting Exchange Online in a cloud environment integrated with Active Directory.
• Proficiency in PowerShell scripting for automation, reporting, and systems administration tasks.
• Strong understanding of mail flow, including connectors, transport rules, accepted domains, and message troubleshooting.
• Working knowledge of Active Directory, Microsoft Windows Server, and Exchange Online Protection.
• Ability to produce clear technical documentation, standard operating procedures, and support runbooks.
• Demonstrated capability to handle escalated support issues in a Tier 2 or Tier 3 environment. Nice to Have
• Experience with retention, archiving, and mailbox policy administration. Compensation & Benefits
• Salary: 115,000 - 120,000 USD per year.
• Benefits include medical, vision, dental, and life and disability insurance.
• 401(k) plan eligibility for contract/temporary professionals.
• Free online training and access to Robert Half resources.