System Administrator

Sigma Information Group, Inc.

. Support a client based in the Highland Park area and surrounding regions through both on-site and remote work .

Posted 9/22/2026full-timeDallas • Texas • United StatesJuniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in managing technology infrastructures, deploying complex solutions, and maintaining healthy client relationships. Proficient in troubleshooting and resolving technical issues while recommending technology solutions to enhance business processes.

Highest-signal resume keywords

Network/System AdministrationIT Management ExperienceMicrosoft ExchangeVMwareWindows Server

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Network TechnologyLAN/WANTCP/IPDNSDHCPVPNSMTPSQL ServerActive DirectoryGroup Policy

Soft Skills

Interpersonal CommunicationProblem-SolvingCustomer Relationship Management

Tools & Technologies

Microsoft AzureOffice 365Amazon Web Services (AWS)Remote Desktop ServicesFirewalls

Industry Keywords

IT ConsultancyManaged Service Provider (MSP)Business Operating SystemsTechnology Solutions

Tech Stack

Tools & technologies

AWSAzureDNSFirewallsSMTPSQLTCP/IPVMware

About the role

Key responsibilities & impact

Support a client based in the Highland Park area and surrounding regions through both on-site and remote work
Work remotely supporting additional clients in other markets, including Austin and Houston, when not engaged with the primary client
Manage technology infrastructures for multiple clients across a variety of industries
Deploy complex solutions involving Exchange, VMware, and Windows Server
Coordinate internal and external resources and vendors
Build new network and server environments
Manage, maintain, and upgrade existing servers, networks, and desktops
Maintain healthy working relationships with multiple customers
Manage customer expectations and regularly communicate status updates to customer contacts
Understand customer business processes and goals
Recommend technology solutions to improve business processes or achieve customer goals
Solve complex technical problems, including software deployments, server and desktop hardware issues, and software problems
Support and maintain servers, desktops, firewalls, network equipment, software applications, backup systems, and more

Requirements

What you’ll need

Candidates must reside in the Dallas, TX metropolitan area
Bachelor's degree or 2-3 years of IT management experience
Minimum 1 year as a network/system administrator, IT manager or IT consultant
Prior experience handling multiple customers at an IT consultancy or MSP a big plus
Knowledge of common business operating systems and applications, including Windows, Windows Server and Office
Solid understanding of network technology and related concepts, such as LAN/WAN, TCP/IP, DNS, DHCP, VPN, SMTP, etc
Strong interpersonal communication skills, both written and verbal
Ability to interface professionally with customer executives and employees
Ability to see problems through to resolution and communicate progress and results to customers
Microsoft Exchange
VMware
Hyper-V
Remote Desktop Services
Windows Server
SQL Server
Firewalls (Fortinet, Palo Alto, etc)
Active Directory
Group Policy
Client Operating Systems
Networking
Microsoft Azure
Office 365
Amazon Web Services (AWS)
Sponsorship is addressed in the application; candidates may be asked whether they require authorization sponsorship to work in the United States

Benefits

Comp & perks

Medical, dental, and vision insurance
Life insurance
Long-term disability
Paid vacation
Paid holidays
Simple IRA for eligible employees
Stocked Snack Bar
Company-sponsored outings
Fitness center onsite
Hybrid work arrangement with on-site and remote work