Job Description:
- 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
