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On-site System Administration Jobs in San Antonio Tx

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Real-time data from 2 active listings in the last 30 days.

Active Roles

Avg. Salary

$146K

Top Hiring Companies

Marathon Petroleum Corporation

Senior Platforms Engineer, Compute, Storage, and Virtualization

Onsite

Posted: Oct 21, 2026

San Antonio, TXBe among the first 25 applicants

5+ years exp$106,900 - $184,300/yearFull Time

Energy & Utilities

Manufacturing & Industrial

Adaptability

AI Fundamentals

Change Management

Cloud Infrastructure Management

Computer Networking

Cybersecurity Risk Management

+18 more

Senior Platforms Engineer - Infrastructure DevOps

Onsite

Posted: Oct 5, 2026

San Antonio, TX

5+ years exp$106,900 - $184,300/yearFull Time

Energy & Utilities

Cloud Infrastructure Management

Computer Networking

Cybersecurity Risk Management

DevSecOps

General Programming

Infrastructure as Code

+16 more

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