Job description

Hybrid based out of Carson, CA 90745 (2 days onsite, 3 days remote). We are seeking a Senior System Network Administrator to manage and support enterprise-level infrastructure with a strong focus on Windows Server environments, Active Directory, Office 365, and advanced networking. This position plays a critical role in maintaining system uptime, security, and performance across both on-prem and cloud-integrated environments. Key Responsibilities: • Administer and support all versions of Windows Server (2012, 2016, 2019, 2022) • Manage and troubleshoot Active Directory, Group Policy, DNS, DHCP, and domain services • Support and administer Office 365 services (Exchange Online, Teams, SharePoint, Intune) • Configure, manage, and troubleshoot Cisco routers and Aruba switches • Maintain and optimize Palo Alto firewall security configurations and policies • Perform routine system maintenance, upgrades, and patch management • Monitor network performance and proactively resolve issues to ensure high availability • Provide Tier 2/3 support for escalated infrastructure and networking issues • Assist with system documentation, disaster recovery planning, and compliance initiatives • Collaborate with cross-functional teams on infrastructure projects and rollouts Required Qualifications: • 5+ years of experience in Systems or Network Engineering roles • Deep expertise with Windows Server and Active Directory • Strong proficiency with Office 365 administration and support • Hands-on experience with Cisco networking gear and Aruba switches • Solid understanding of Palo Alto firewalls and general firewall/network security practices • Strong troubleshooting, scripting (e.g., PowerShell), and documentation skills • Experience with system monitoring tools (e.g., SolarWinds, PRTG, Nagios) is a plus Preferred/Bonus Skills: • Experience with VMware, Hyper-V, or other virtualization platforms • Knowledge of Azure AD, Intune, or hybrid cloud integrations • Familiarity with ITIL practices, change control, and ticketing systems (e.g., ServiceNow, Jira) • Networking certifications (e.g., CCNA, PCNSA, Network+) or Microsoft certifications (MCSA, MS-100)

Requirements