Senior O365 Administrator
First seen by Alion on Sep 16, 2026.
Job Title : Senior O365 Administrator
Location : Hyderabad, India
Experience : 5 - 8+ years
About the Role :
We are looking for a highly skilled Senior O365 Administrator to administer, support, secure, and optimize the Microsoft 365 environment. The ideal candidate should have strong hands-on experience with Exchange Online, SharePoint Online, OneDrive for Business, Entra ID, Intune, migrations, PowerShell, and Microsoft 365 security and compliance.
Key Responsibilities :
- Administer and maintain Microsoft 365 services including Exchange Online, SharePoint Online, and OneDrive for Business.
- Manage user lifecycle operations including provisioning, mailbox management, groups, permissions, delegations, shared mailboxes, and resource mailboxes.
- Plan and execute tenant-to-tenant and workload migrations involving mailboxes, SharePoint sites, and OneDrive data.
- Handle migration assessment, cutover planning, user communication, post-migration validation, and issue resolution.
- Maintain Microsoft 365 security and compliance controls including MFA, Conditional Access, retention policies, eDiscovery, auditing, and secure sharing.
- Support Microsoft Intune for device enrollment, compliance policies, application deployment coordination, and troubleshooting.
- Perform monthly Microsoft 365 license utilization reviews and optimize license assignments based on business requirements.
- Drive license cost optimization through license right-sizing, reclaiming unused licenses, and optimizing SKU usage.
- Manage employee offboarding and ensure appropriate backup and retention of mailbox, OneDrive, and SharePoint data.
- Provide L2/L3 support for Microsoft 365 incidents and service requests.
- Perform troubleshooting, root cause analysis, corrective actions, and change management activities.
- Maintain SOPs, technical documentation, service health reports, migration documentation, and license optimization reports.
Required Skills & Qualifications :
Microsoft 365 / O365 :
- Strong hands-on experience in Microsoft 365 / Office 365 administration.
- Experience managing Exchange Online, SharePoint Online, and OneDrive for Business.
- Experience supporting medium to large enterprise environments with 1,000+ users is preferred.
- Strong knowledge of Microsoft 365 Admin Center.
Exchange Online :
- Strong knowledge of mailbox management, shared/resource mailboxes, mail flow, transport rules, and anti-spam policies.
- Experience with permissions, delegations, and Exchange Online troubleshooting.
SharePoint & OneDrive :
- Hands-on experience with SharePoint Online and OneDrive administration.
- Knowledge of permissions, external sharing controls, governance, and data management.
Entra ID / Identity :
- Good understanding of Entra ID (Azure AD).
- Experience with user and group administration, authentication, MFA, Conditional Access, and RBAC.
Intune :
- Working knowledge of Microsoft Intune / Endpoint Manager.
- Experience with device enrollment, compliance policies, application deployment coordination, and endpoint troubleshooting.
Migration :
- Experience in tenant-to-tenant and/or Microsoft 365 workload migrations.
- Ability to handle migration planning, assessment, cutover, rollback planning, communication, and post-migration validation.
PowerShell & Automation :
- Proficiency in PowerShell for Microsoft 365 administration and automation is preferred.
- Ability to automate administrative tasks and generate reports.
Security & Compliance :
- Understanding of Microsoft 365 security and compliance controls.
- Knowledge of retention policies, eDiscovery, auditing, secure sharing, MFA, and Conditional Access.
License Management :
- Strong analytical skills for license utilization tracking.
- Experience with license right-sizing, SKU optimization, unused license reclamation, and monthly savings reporting.
General :
- Strong troubleshooting and problem-solving skills.
- Good incident and problem management discipline.
- Strong documentation and SOP writing skills.
- Good stakeholder communication skills.
- Ability to work under IT governance and change management processes.
Educational Qualification :
- Bachelor's degree in IT, Computer Science, or equivalent practical experience.
Preferred Certifications :
- Microsoft Certified: Administrator - MS-102 or equivalent.
- Microsoft Certified: Endpoint Administrator Associate - MD-102 or equivalent Intune certification.
- Microsoft Security, Compliance, and Identity certifications are an advantage.
Skills
Office 365, System Administration, SharePoint Online, PowerShell, MS Intune, Entra ID, Change Management, IT Operations