System Administrator (Onsite, Modesto, CA)

About the role

We are seeking a hands‑on Systems Administrator to own, support, and continuously improve our client’s modern IT infrastructure. You will ensure that virtual servers, Microsoft cloud services, and core network components remain secure, reliable, and scalable while balancing daily operations with longer‑term projects.

Key responsibilities

• Manage and maintain virtualized Windows and Linux server environments.
• Administer on‑prem and cloud identity systems, including Active Directory, Group Policy, DNS, MFA, and Intune.
• Support collaboration platforms such as email, Microsoft Teams, file sharing, and intranet sites.
• Monitor system health, performance, and security; respond to incidents and implement preventive measures.
• Design, implement, and maintain backup, disaster‑recovery, and redundancy strategies.
• Manage firewalls, routing, and core networking services.
• Oversee endpoint management for laptops, mobile devices, and remote users.
• Act as escalation point for complex issues and lead root‑cause analysis.
• Partner with vendors on hardware, software, and infrastructure projects.
• Maintain software and hardware licensing records and create clear technical documentation.
• Mentor junior IT staff and contribute to project delivery.

Required profile

• Minimum 3 years of hands‑on system administration experience.
• Comfortable working on‑site five days a week in Modesto, CA.
• Strong expertise in either Windows or Linux; proficiency in both is ideal.
• Solid understanding of networking, security best practices, and business continuity.
• Primary ownership of Active Directory, Group Policy, Intune, VMware, and MFA.
• Experience with backup, firewalls, redundancy, and disaster‑recovery strategies.
• Exposure to hybrid cloud environments (Azure or AWS).

Required skills

• Windows Server
• Linux
• VMware virtualization
• Microsoft Azure
• Amazon Web Services (AWS)
• Active Directory & Group Policy
• Microsoft Intune
• Multi‑Factor Authentication (MFA)
• DNS
• Backup and disaster‑recovery solutions
• Firewalls and routing
• Endpoint management
• Microsoft Teams and email platforms
• Fundamental networking concepts

What we offer

• Medical, dental, and vision insurance
• 13 paid holidays
• 3 weeks PTO plus 2 weeks sick leave
• Gym reimbursement
• Health Savings Account (HSA) and Employee Assistance Program
• Tuition reimbursement