IT- Systems Administrator

Information Systems & Networks Corporation • Bethesda, MD

4d

About The Position

We are seeking a senior-level IT System Administrator with 8–10 years of experience to support and maintain our IT infrastructure. This role manages servers, networks, Microsoft 365, voice systems, and network storage appliances while providing advanced technical support. This role ensures stable IT operations, secure infrastructure, and advanced support across the organization. Ideal for a seasoned administrator with broad hands-on experience.

Requirements

• 8–10 years of experience in system/network administration.
• Strong expertise in Windows Server, Microsoft 365, and core networking.
• Hands-on experience with VoIP systems and network storage appliances.
• Strong understanding of security best practices and patch management.
• Ability to work independently and manage multiple priorities.

Nice To Haves

• VMware/Hyper-V experience
• PowerShell scripting
• Experience in compliance environments (NIST 800-171, CMMC)
• Certifications: Security+, Network+, Azure Administrator, CCNA, or similar

Responsibilities

• Administer Windows servers, Active Directory, DNS, DHCP, and Group Policy.
• Support switches, firewalls, VPNs, and wireless networks.
• Configure and troubleshoot VoIP phones, call routing, and SIP/hosted voice systems.
• Maintain NAS/SAN storage appliances and shared drive environments.
• Manage Microsoft 365, Azure AD/Entra ID, Teams, and SharePoint.
• Provide Tier 3 support and handle complex technical escalations.
• Monitor backups, system performance, security patches, and updates.
• Maintain documentation, SOPs, and asset inventory.

What This Job Offers

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