IT Network / Systems Administrator - I

Lewis Group of Companies•Upland, CA

9d•$75,000 - $85,000•Hybrid

About The Position

The Lewis Group of Companies is a collection of separate, independent entities focused on the real estate industry. We've devoted 70 years to creating lasting value for our employees, clients, partners, and the broader communities we serve. Our company is comprised of people who value honesty and genuine relationships, and our success stems from thoughtful planning and commitment to quality. About your new Career: Lewis Management Corp. seeks an IT Network / Systems Administrator I to support our growing technology environment. This role is ideal for someone with a strong technical foundation who enjoys hands-on systems and network work, proactive monitoring, and strengthening infrastructure security. You’ll support on-prem and cloud environments, maintain Windows and Linux servers, assist with network operations, and contribute to our overall security and disaster recovery readiness. This role will report to our IT Systems Administrator.

Requirements

Bachelor’s degree in IT, Computer Science, or related field — or equivalent experience.
2–3+ years of IT systems administration experience.
Hands-on experience with servers, networking, and security monitoring.
Strong Windows Server administration: Linux familiarity preferred.
Experience with Microsoft 365 and Active Directory.
Understanding network switching, VLANs, VPNs, and IP schemas.
Experience with hypervisors/virtualization environments.
Knowledge of public cloud datacenter infrastructure.
Experience with backup technologies.
Network cabling (terminate, test, tone).
Excellent communication and customer service skills.

Responsibilities

Server & System Administration Monitor, secure, and maintain Windows and Linux servers (on-prem and cloud).
Perform patching, performance tuning, storage analysis, and documentation.
Conduct vulnerability assessments and assist with regular security audits.
Maintain network documentation and support rack/stack of equipment.
Troubleshoot switches, cabling, ISP issues, and network configurations.
Terminate, test, and tone structured cabling.
Monitor daily backup operations and ensure successful completion.
Support disaster recovery planning and periodic testing.
Administer AD user accounts, groups, permissions, and GPO troubleshooting.
Investigate security alerts and perform network/software vulnerability scanning.
Assist with remediation of identified weaknesses.
Use scripting and reporting tools to assess system health and automate tasks.
Support periodic audits and ensure compliance across systems.