Senior Administrator-Systems; On-Site
Listed on 2026-05-15
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IT/Tech
Systems Administrator, Cloud Computing, IT Support
Job Summary
This is a senior-level technical role requiring extensive hands‑on experience in systems administration and deep expertise in network operating systems. The ideal candidate will have ’expert’ level experience with Microsoft Azure, and strong working knowledge of Server OS, Active Directory, DNS, PKI, Microsoft Endpoint Configuration Manager, server monitoring, M365, Entra , and Azure cloud administration.
As a technology leadership position, it demands a high level of practical proficiency in both Windows Server environments and Azure cloud services. Solano County’s network spans six cities, four data centers, multiple branch locations, and two Azure tenants.
In collaboration with other team members, this position will be responsible for the day‑to‑day operation, support, and security of the County’s compute, storage, and cloud infrastructure. Our on‑premises environment is primarily built on Cisco UCS and Hyper Flex (HX) platforms, so recent experience with converged or hyperconverged virtualization systems is essential.
Please note that this position requires passing a California Law Enforcement Telecommunications (CLETS) background check, and authorization to work in the United States (please see following for specifics).
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Duties and Responsibilities- Responding to daily service requests and incident tickets through the Service Now platform.
- Communicating clearly and effectively with users and stakeholders at all technical levels, from end users to executive leadership.
- Applying strong diagnostic and problem‑solving skills to troubleshoot issues and implement effective solutions.
- Responding promptly to service outages, identifying and analyzing root causes, and restoring services to ensure efficient and reliable operations.
- Managing on‑premises and cloud infrastructure to ensure service‑level agreements (SLAs) and quality‑of‑service (QoS) targets are consistently met.
- Managing multiple projects simultaneously, from initial design through full implementation.
- Overseeing all lifecycle stages of compute and storage hardware/software, including deployment, testing, maintenance, upgrades, refresh cycles, and decommissioning.
- Supporting critical outages and participating in after‑hours incident response as required, including rotation in a team‑wide on‑call schedule.
- Creating and maintaining system topology diagrams using Visio or similar tools.
- Producing clear, accurate, and maintainable technical documentation within the Service Now knowledge base.
- Managing asset inventory for compute and storage equipment.
- Collaborating with various IT service towers to resolve complex issues and support cross‑functional projects.
- Perform other duties as assigned.
- Ensure systems are in compliance with security policies and industry regulations.
- Implement security baselines and configurations.
- Maintain accurate and up‑to‑date documentation.
- Develop and update knowledge‑base articles for common issues and resolutions.
- 6+ years of experience in a similar position and/or any combination of education and experience that clearly demonstrates the ability to perform the job duties of the position. At least one of the following certifications:
- Computer Science Degree, MCP or equivalent role‑based certifications in Windows Server, Microsoft Office 365 or Microsoft Azure.
- Expert level of experience and understanding of Microsoft Azure.
- Expert level of experience in Active Directory Domain Services, including FSMO roles, AD Functional Level upgrades, Domain Trusts, AD Site & Subnets, DFS & SYSVOL replication, GPO optimization, ADMX upgrades, LDAP queries, Dynamic DNS, SPNs, ICACLs.
- High level of expertise in Entra / Azure AD, including Entra Connect, SAML & OIDC SSO, Conditional Access policies, Privilege Identity Management, PIV and FIDO2 Smartcard, etc.
- Expert working knowledge of Microsoft 365 Services to include Exchange Online, SharePoint, One Drive, MS Teams, Dynamics, Power BI, etc.
- Expert working knowledge of Microsoft Exchange up to and including Exchange 2019/SE.
- Strong working knowledge of Microsoft PKI,…
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