Senior IT Engineer

COFREIGHT INC • Buena Park, CA

6d • $110,000 - $120,000 • Onsite

About The Position

We are seeking a Senior IT Engineer to support and enhance our on-premises infrastructure in the United States. The engineer will be responsible for the overall stability, efficiency, and security of our IT infrastructure. The core requirements for this role are: 1) extensive, hands-on experience in enterprise wireless networks (UniFi/Aruba); 2) substantial experience in firewall management and Active Directory; and 3) a strong background in information security and compliance practices.

Requirements

• 5+ years of experience in infrastructure/systems engineering.
• Extensive, hands-on experience with enterprise wireless networking. Must have expertise with Ubiquiti UniFi or Aruba Networks.
• Substantial experience in configuring and managing enterprise firewalls.
• Substantial experience in administering Microsoft Active Directory.
• Hands-on experience with information security and compliance practices.
• Strong hands-on experience with Windows Server and Linux.
• Solid experience with enterprise networking (wired).
• Experience with virtualization platforms (VMware, Hyper-V, Proxmox VE).
• Familiarity with information security best practices.
• Strong troubleshooting and root-cause analysis skills.

Nice To Haves

• VDI performance optimization or large-scale desktop deployment experience.
• Wireless site survey or RF optimization experience.
• Experience with backup and DR solutions (e.g., Veeam).
• Scripting or automation experience (PowerShell, Bash).
• Relevant infrastructure, network, or security certifications (e.g., CCNA, Security+, CISSP).

Responsibilities

• Design, deploy, troubleshoot, and optimize enterprise Wi-Fi networks.
• Provision and configure wireless access points (APs) and manage wireless controllers.
• Implement SSID design, security (WPA2/WPA3, 802.1X), and roaming optimization.
• Conduct RF tuning, channel planning, and interference troubleshooting.
• Configure, manage, and troubleshoot enterprise firewalls (security policies, VPN).
• Administer Active Directory (user/group management, GPO, domain security).
• Implement and maintain infrastructure security controls and best practices.
• Conduct system hardening, patch management, and vulnerability management.
• Enforce access controls and audit practices to ensure compliance.
• Participate in security monitoring, incident response, and disaster recovery planning.
• Operate, maintain, and troubleshoot Windows and Linux servers.
• Manage core network infrastructure (routing, switching, VLANs).
• Manage virtualization platforms (VMware vSphere, Hyper-V, Proxmox VE).
• Support Virtual Desktop Infrastructure (VDI) environments.
• Administer enterprise storage systems (SAN/NAS/DAS).
• Maintain technical documentation and participate in on-call rotation.

Benefits

• Medical insurance
• Dental insurance
• Vision insurance
• Paid Time Off

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed