Optimum · 14 hours ago
Senior O365 Administrator
Plano, TX
Full-time
Onsite
Senior Level
5+ years expOptimum is a leader in connectivity, seeking enthusiastic professionals to join their team. The Sr. O365 Administrator for Messaging and Collaboration is responsible for managing and supporting the organization's messaging systems, ensuring seamless communication and collaboration across the company.
Telecommunications
Responsibilities
Manage and maintain the Microsoft O/M365 environment, including Exchange Online, Teams, SharePoint, and OneDrive
Ensure the availability, performance, and security of messaging and collaboration systems
Monitor and troubleshoot issues with end users, providing timely resolution and support. Interact with end users to troubleshoot reported problems or to perform required system maintenance activities
Escalate problems to Engineering Leads, management and/or vendors in a timely fashion
Perform general O365 administration tasks, including system backups, recovery, and monitoring system performance and capacity
Administer Exchange 2013 & 2019 on-premise for remote mailboxes and email relay
Maintain and troubleshoot Active Directory and Azure AD, including account maintenance and federation services
Resolve tickets related to O365, messaging, and collaboration tools in ServiceNow
Utilize PowerShell scripting to automate tasks and manage the O365 environment
Ensure compliance with SOX and other regulatory requirements related to messaging, collaboration, and general O365 administration
Day-to-day documentation of operations needs and process changes
Mentorship of team for skill and personal growth
Qualification
Required
Bachelor's degree or above in an IT-related field or equivalent work experience
Minimum of 5 years of technical experience with Microsoft O/ M365
Strong knowledge of Microsoft 365, particularly Exchange Online, Teams, SharePoint, OneDrive, and general O365 administration
Experience with on-premise Exchange and Active Directory
Proficiency in PowerShell scripting for automation and management of the O365 environment
Familiarity with email hygiene solutions and security compliance features
Excellent problem-solving skills and the ability to work under pressure
Company
Optimum
At Optimum, we believe in the power of connection. We deliver fast internet, mobile, TV, and phone services to millions of homes and businesses.
5001-10000 employees
H1B Sponsorship
Optimum has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (6)
2024 (1)
2023 (2)
2022 (5)
2021 (2)
2020 (4)
Funding
Current Stage
Late StageCompany data provided by crunchbase