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 AdministratorMicrosoft 365 Certified : Messaging Administrator AssociateSC-300 : Microsoft Identity and Access AdministratorAbout 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.