IT- Systems Administrator

TIGER INFORMATION SYSTEMS
Bethesda, United States of America
17 days ago

Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Working hours
Regular working hours
Languages
English
Experience level
Senior

Job location

Bethesda, United States of America

Tech stack

Microsoft Windows
Automatic Call Distributor
Microsoft Active Directory
Azure
VoIP
Dynamic Host Configuration Protocol
DNS
Hyper-V
Information Technology Operations
IP Pbx
Virtual Private Networks (VPN)
Windows Server
Network administration
Powershell
Azure
SharePoint
Wireless Networks
Internet Protocol Telephony
Network Storage
Computer Network Technologies
Firewalls (Computer Science)
Information Technology
Patch Management
Network Server
VMware

Job 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.

Requirements

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

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