Senior Systems Administrator

Under the direction of the Manager, Servers & Storage, the Senior Systems Administrator serves as a senior technical authority responsible for maintaining, optimizing, and securing on-premises and cloud-based infrastructure assets. This role provides advanced administration, engineering, and tier-3 escalation support across server, storage, virtualization, backup/DR, and identity platforms. The ideal candidate is a subject matter expert in Microsoft Hyper-V failover clusters, Pure Storage, Windows/Linux server OS, Disaster Planning and Recovery, Active Directory, M365, and infrastructure automation. You will be able to efficiently build, maintain and monitor said infrastructures to allow AnewHealth to meet organizational objectives.

AnewHealth fosters a high-performing environment driven by our Core Values and commitment to our Patient Promise.

• Build, maintain, monitor, and troubleshoot enterprise physical and virtual server infrastructure, covering Windows Server 2012 R2 through Windows Server 2025 and Enterprise Linux distributions (e.g., RHEL, CentOS, Ubuntu).
• Administer high-availability Microsoft Hyper-V failover clusters, performing host provisioning, lifecycle updates, cluster node expansions, and VM performance tuning.
• Provision, manage, and optimize enterprise SAN/NAS storage arrays, specifically Pure Storage (FlashArray and FlashBlade)
• Monitor the system daily and respond immediately to security or usability concerns.

• Provide advanced administration and engineering for Active Directory (AD), Group Policy Objects (GPOs), and core network services (DNS, DHCP, IPAM).

• Maintain hybrid identity and mail flow environments, including Exchange 2019, Microsoft 365 / Exchange Online, Entra ID (Azure AD), Single Sign-On (SSO), Multi-Factor Authentication (MFA), and conditional access policies.

• Manage end-to-end lifecycle and bindings for internal PKI and external SSL/TLS certificates across servers, web applications, and security appliances.

• Support and monitor public/hybrid cloud compute assets and cloud infrastructure across AWS, Azure, and GCP.
• Develop, refine, and maintain scripts using PowerShell, Python, or Shell to automate routine system administration tasks, API integrations, and bulk object operations.
• Author and maintain accurate, detailed technical documentation, system topologies, standard operating procedures (SOPs), and change control records.
• Provide Tier 3 escalation support for technical staff and end-user impacting issues.
• Other duties as assigned.

Disclaimer : The essential functions outlined above represent the primary responsibilities of this role; specific duties may vary based on operational needs. Additional responsibilities consistent with the required skills and expertise may be assigned as needed.

The listed qualifications reflect the preferred background of the ideal candidate. Candidates with equivalent skills or experience are encouraged to apply.

• Education: Bachelor’s degree in Computer Science, Information Technology, or a related field.
• Experience: 5+ years of related systems administration experience, with demonstrated senior-level competency in an enterprise environment.

• Operating Systems: Advanced mastery of Windows Server (2012 R2 through 2025) and working competency in Enterprise Linux (RHEL, CentOS, Ubuntu).
• Virtualization & Storage: Deep experience with Microsoft Hyper-V failover clustering and SAN/NAS administration (Pure Storage FlashArray / FlashBlade preferred).
• Identity & Messaging: Hands-on mastery of Active Directory, GPO, M365, Entra ID, SSO, MFA, Exchange 2019 / Hybrid, and SSL/PKI certificate management.
• Systems Tooling: Direct experience with automated patching platforms (Automox preferred), monitoring platforms (PRTG preferred), and enterprise BCDR platforms (Commvault preferred).
• Scripting & Cloud: Proficiency in PowerShell, Python, or Bash scripting, along with working knowledge of cloud services.

• Operational Judgment: High sense of responsibility to review and approve change requests carefully, assessing risks to uptime and security when standing in for management.
• Problem-Solving & Diagnostics: Methodical approach to isolating complex performance bottlenecks, log analysis, and root-cause determination under pressure.
• Communication & Rapport: Exceptional interpersonal skills with a focus on rapport-building, listening, clear technical writing, and customer service.
• Mentorship & Documentation: Strong documentation habits and a genuine willingness to share knowledge and guide junior team members.
• Framework Awareness: Working knowledge of ITIL best practices and organizational change management.