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Microsoft O365 Administrator

Optimal Solutions Inc

Yesterday
Unspecified
Mid Level Career (5+ yrs experience)
Unspecified
IT - Software
Remote/HybridHerndon, VA (Off-Site/Hybrid)

Position Summary:
We are seeking a highly skilled Office 365 Administrator with deep expertise in Microsoft Online and Teams Administration to support and optimize enterprise-level collaboration and communication environments. The ideal candidate will have extensive hands-on experience managing hybrid Microsoft environments, implementing O365 services, and integrating Teams to ensure secure, efficient, and seamless user experiences.

Key Responsibilities:
• Administer, maintain, and support Microsoft Online, Microsoft Teams, and other O365 collaboration services.
• Manage cloud environments including mail flow, connectors, and transport rules.
• Setup, configure, and deploy secured laptop image to devices.
• Sanitize laptops.
• Configure, monitor, and troubleshoot Teams Voice, Channels, Meetings, and integration with calendars and SharePoint.
• Oversee user provisioning, license management, and permissions in Azure Active Directory (AAD)/Entra ID.
• Maintain and enforce security, compliance, and retention policies across O365 services.
• Perform O365 tenant administration, including Exchange, Teams, OneDrive, and related workloads.
• Implement and maintain PowerShell automation scripts for user and mailbox management.
• Conduct system monitoring, performance tuning, and capacity planning to ensure high availability.
• Collaborate with cybersecurity and network teams to manage incident response and vulnerability remediation.
• Lead O365 migration and upgrade projects, including mailbox moves, Teams rollout, and service enhancements.
• Prepare technical documentation, operational procedures, and knowledgebase materials.


Required Qualifications:
• Bachelor’s degree in Information Technology, Computer Science, or a related field (or equivalent experience).
• 8 years of experience administering and supporting Microsoft environments. Can be a combination of on prem or online.
• Proven experience managing and troubleshooting Microsoft Teams, including telephony and integrations.
• Strong understanding of PowerShell scripting for O365 automation.
• Experience with hybrid deployments, Active Directory, Azure AD/Entra ID, and identity synchronization.
• Knowledge of O365 security and compliance features (DLP, eDiscovery, MFA, Conditional Access).
• Demonstrated ability to resolve complex messaging and collaboration issues in large enterprise settings.

Preferred Qualifications:
• Microsoft 365 Certified: Messaging Administrator Associate or Teams Administrator Associate.
• Experience with SharePoint Online, Teams System administration, Users and access support and OneDrive for Business administration.
• Familiarity with ITIL processes and enterprise ticketing systems (e.g., ServiceNow, Jira).
• Strong communication and documentation skills with the ability to support end-users and executives.
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About Us
Optimal Solutions, Inc. (OSI) is a small, disadvantaged business and certified Capability Maturity Model Integration (CMMI) for Development (DEV) Level 3, International Organization for Standardization (ISO) 9001:2015, and ISO 27001:2013. It is a business that provides Information Technology services and solutions to the Federal Government. Established in 2009 and headquartered in Herndon, Virginia, OSI takes great pride in successfully supporting the Department of Defense – US Army; US Space Force; DISA; Departments of State, Homeland Security, and Interior. We are a pure-play Agile development firm and an Amazon Web Services (AWS) Public Sector Select Tier Partner. OSI brings extensive experience in Agile Project Management, Software and Cloud Engineering, Microservices Architecture, expertise managing containerized applications on-premises, and Cloud using Kubernetes, modernizing monolithic applications, and migrating workloads to GovCloud by implementing a successful DevSecOps pipe

Optimal Solutions Inc Jobs


Job Category
IT - Software
Clearance Level
Unspecified