The Senior System Administrator will manage a global IT cloud infrastructure with a focus on Microsoft 365, Exchange administration, Email security, and compliance. Responsibilities include user management, security protocol implementation, optimizing IT platforms, and providing infrastructure support for various projects.
Senior System Administrator
Location: Pune, Maharashtra, India
Onit, Inc. is seeking a Senior Systems Administrator to manage and optimize a diverse global IT cloud infrastructure. The role focuses on Microsoft 365, Entra ID, SSO, Exchange administration, Email Security (Mimecast), and IT governance while contributing to cross-functional initiatives.
Key Responsibilities:
Microsoft 365 & Exchange Administration:
- Manage user accounts, licensing, permissions, and roles across multiple M365 tenants.
- Manage Exchange Online mail flow, retention policies, and security measures (Mimecast).
- Implement security protocols like MFA, Conditional Access, and threat management.
- Migrate and Manage One Drive, SharePoint and MS Teams.
- Ensure compliance with regulations (e.g., GDPR) and manage eDiscovery and audit logs.
Platform Optimization:
- Monitor platform performance and usage, recommend cost-saving optimizations.
- Develop governance policies and stay updated on the Microsoft roadmap.
Backup, Recovery, and Security:
- Configure backup solutions and update disaster recovery plans.
- Utilize Mimecast for filtering, encryption, archiving, and continuity.
IT Infrastructure Support:
- Manage hosting, domain, and Cloudflare.
- Collaborate on AWS infrastructure projects.
Required Skills:
- 8+ years as Global Admin for M365, Entra ID & Exchange administration, including automation and migrations.
- Proficiency in PowerShell for scripting and administration.
- Expertise in email security (Mimecast), protocols (SMTP, POP3, IMAP) & Security Standards (SPF, DKIM, DMARC)
- Experience with Azure AD, IAM, and compliance frameworks (NIST, GDPR, ISO 27001).
- Knowledge of CrowdStrike, Cloudflare, and Zero-Trust principles.
Preferred Certifications:
- MS-102: Microsoft 365 Administrator
- Microsoft 365 Certified: Messaging Administrator Associate
- SC-300: Microsoft Identity and Access Administrator
About Onit:
Onit is a global leader in enterprise workflow solutions, transforming business processes in Legal, IT, HR, and Finance with cutting-edge platforms and smarter workflows.
Top Skills
Azure Ad
Exchange
Microsoft 365
Powershell
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