Senior Systems Administrator: Identity & Cloud Reliability

Trustees Of Thayer Academy; Braintree (MA); On-site; USD 113,000 - 117,000; Full time

Job summary

Trustees Of Thayer Academy seeks a Senior Systems Administrator to own the reliability, security, and lifecycle of on‑premises and cloud systems supporting academic and administrative operations. You will manage identity, servers, endpoints, backups, and SaaS integrations, while external specialists handle network architecture and infrastructure.

The role reports to the Director of IT and requires occasional after‑hours maintenance.

Qualifications

• 5+ years as a Systems Administrator in mixed Windows/macOS environments.
• Strong Windows Server and identity experience.
• Hands-on Entra ID / Azure AD experience.
• Virtualization and backup platform experience.
• Proven ability to own systems end-to-end.

Responsibilities

• Identity & Access: Administer Microsoft Entra ID (Azure AD), hybrid identity, and Conditional Access.
• Server & Platform Administration: Administer Windows Server and Linux systems (on-prem and cloud).
• Endpoint & Device Management: Support Jamf and Intune device platforms and baselines.
• Backup, DR, and Reliability: Administer backup platforms and test restores.
• Security Operations: Apply OS hardening and respond to security incidents; coordinate with vendors.
• SaaS & Application Support: Own backend administration for Google Workspace, Microsoft 365, and core platforms.
• Documentation & Process: Maintain runbooks and change management records.

Skills

Azure AD

Windows Server

macOS

Virtualization

Backup platforms

Duo MFA

Tools

VMware

Intune

Job description

Trustees Of Thayer Academy seeks a Senior Systems Administrator to own the reliability, security, and lifecycle of on‑premises and cloud systems supporting academic and administrative operations. You will manage identity, servers, endpoints, backups, and SaaS integrations, while external specialists handle network architecture and infrastructure.

The role reports to the Director of IT and requires occasional after‑hours maintenance.