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# System Administrator - Houston, TX

- **Company:** Sigma Inc.
- **Location:** Houston, TX, United States (Remote available)
- **Experience:** Starter
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Active Directory, Amazon Web Services, Software Applications, Microsoft Azure, Dynamic Host Configuration Protocol, Domain Name System (DNS), Microsoft Exchange Server, Hyper-V, IT Management, Networking Hardware, Virtual Private Networks (VPN), Simple Mail Transfer Protocols, Microsoft Office, Microsoft SQL Server, Windows Servers, Remote Desktop Services, Software Deployment, TCP/IP, Wide Area Networks, Backup and Restore, Computer Network Technologies, Firewalls (Computer Science), Computer Equipment, Fortinet, Network Server, Server Operating Systems & Platforms, Vmware
- **Published:** September 24, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=140e5ea62e9e2763

## About the Role

Candidates must reside in the Houston, TX metropolitan area. The employee will support a client based in the Galleria area, working both on-site and remotely. When not engaged with this client, the employee will work remotely supporting additional clients located in other markets, including Austin and Houston.

The System Administrator will have the opportunity to manage the technology infrastructures for multiple clients in a variety of different industries. This includes supporting and maintaining servers, desktops, firewalls, network equipment, software applications, backup systems, and more. We are looking for a technologically-savvy, detail-oriented, and self-motivated achiever who can provide outstanding service for our clients.

A Sigma System Administrator must have excellent interpersonal communication skills and be able to support multiple clients, projects, and deadlines while maintaining the ability to handle unexpected situations. Additionally, he/she must have a high level of autonomy while being able to work with and contribute to the rest of the team., * 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

## Description

* Deploy complex solutions involving a variety of technologies, such as 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 and recommend technology solutions to improve those processes or achieve those goals.
 * Solve complex technical problems including, software deployments, server and desktop hardware issues and software problems., * 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)