Windows Server and Microsoft Exchange server Admin

Senior Systems Administrator (Windows / Exchange / Azure)

Location: Hybrid/On-site

Type: Full-time • Exempt

Reports to: IT Infrastructure Manager

Role Summary

Own the reliability, security, and lifecycle of our Microsoft stack across on-prem and Azure. You’ll administer Windows Server and Microsoft Exchange, manage Azure resources, handle light SQL administration for line-of-business apps, and drive vulnerability remediation end-to-end.

Key ResponsibilitiesWindows Server & Core Services

• Administer Windows Server 2016–2022 (AD DS, DNS, DHCP, DFS/DFSR, File/Print, GPOs).
• Implement RBAC/AGDLP, ABE, FSRM quotas/screens, and NTFS/share permissions hygiene.
• Patch management, OS hardening, baseline configuration (CIS/SCM), and certificate services (PKI).

Microsoft Exchange (On-prem & Online)

• Operate and maintain Exchange (on-prem and/or Exchange Online): mailbox databases, DAGs, transport rules, connectors, journaling, retention, and eDiscovery.
• Manage hybrid identity and mail flow (MX, SPF/DKIM/DMARC, accepted domains, safe-senders/blocked senders).
• Troubleshoot queues, performance, client connectivity (Outlook/ActiveSync/Mobile).

Azure Administration

• Manage Azure AD/Entra ID, Conditional Access, PIM, SSPR/MFA, Azure AD Connect / Cloud Sync.
• Provision and govern Azure resources (VMs, storage, VNets, NSGs, load balancers, backup/recovery).
• Implement Azure security controls: Defender for Cloud, Update Management, RBAC, Key Vault, logging (Log Analytics / Sentinel).

SQL (Light DBA Support)

• Basic SQL Server administration: install/patch, backups/restores, jobs/agents, permissions, and performance triage (indexes, blocking basics).
• Partner with DBAs/app owners on upgrades and schema changes; ensure HA/DR runbooks are current.

Vulnerability & Compliance

• Own the vuln remediation cycle: ingest findings (Tenable/Nessus, Defender, Qualys, etc.), prioritize, patch or mitigate, and validate closure.
• Track exceptions/compensating controls, maintain dashboards/SLA metrics, and support audits (HIPAA, SOC 2, PCI, etc.).
• Group Policy/Intune hardening for servers; TLS/cipher suites, secure baseline drift detection.

Operations & Automation

• Write PowerShell for provisioning, reporting, and remediation at scale; maintain source-controlled scripts.
• Create runbooks, DR plans, and knowledge articles; participate in an on-call rotation.

Required Qualifications

• 8+ years administering Windows Server in enterprise environments.
• 8+ years with Exchange (on-prem and/or Exchange Online) including hybrid mail flow.
• 5+ years Azure administration (AAD/Entra, VM/storage/networking, security).
• Practical PowerShell expertise (modules: ActiveDirectory, ExchangeOnline, Az, Graph).
• Experience with vulnerability scanners and patching workflows (WSUS/SCCM/Intune/Azure Update Mgt).
• Solid understanding of networking (TCP/IP, DNS, SMTP, TLS, certs) and identity (Kerberos/NTLM, OAuth).

Nice-to-Have

• SQL Server Admin Associate-level skills (backup/restore, security, job maintenance, performance basics).
• Experience with M365 (SharePoint, Teams, OneDrive), Intune, and Autopatch.
• Scripting beyond PowerShell (Python) and Infrastructure as Code (Bicep/Terraform).
• Monitoring/observability: SCOM, Nagios, Datadog, Sentinel, Splunk.
• Backup & recovery tooling (Veeam/Azure Backup) and DR testing in hybrid setups.

Certifications (preferred, not required)

• Microsoft: AZ-104 , AZ-500 , MS-102 , Exchange (legacy), SC-200/SC-300 .
• Security: CompTIA Security+ , CISSP (plus).
• SQL: DP-900 or DP-300 (nice to have).

Soft Skills

• Strong ownership and prioritization; communicates clearly with technical and non-technical stakeholders.
• Documentation-first mindset; able to create concise runbooks and change plans.
• Collaboration across security, networking, apps, and support teams.

KPIs / How success is measured

• Patch/vulnerability SLA compliance and mean-time-to-remediate (MTTR).
• Service uptime and incident reduction for Exchange and core services.
• Audit readiness : clean access/permissions posture and documented controls.
• Automation coverage : percentage of routine tasks scripted/runbooked.

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