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# IT- Systems Administrator

- **Company:** TIGER INFORMATION SYSTEMS
- **Location:** Bethesda, MD, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Automatic Call Distributor, Active Directory, Microsoft Azure, VoIP, Dynamic Host Configuration Protocol, Domain Name System (DNS), Hyper-V, Information Technology Operations, IP Pbx, Virtual Private Networks (VPN), Windows Servers, Network Administration, Windows PowerShell, Azure Active Directory, Microsoft SharePoint, Wireless Networks, Internet Protocol Telephony, Network Storage, Computer Network Technologies, Firewalls (Computer Science), Information Technology, Patch Management, Network Server, Vmware
- **Published:** June 4, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=638d5f23e08b957a

## About the Role

Do you have experience in Windows support?, * 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.

Preferred Skills:

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

## Description

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., * 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., This role ensures stable IT operations, secure infrastructure, and advanced support across the
organization. Ideal for a seasoned administrator with broad hands-on experience.


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