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Technology & Data

Systems Administrator

Keeps an organization's servers, networks, and IT systems running.

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Content last reviewed: August 2026

A systems administrator manages the servers, networks, and core IT infrastructure an organization depends on, making sure systems stay up, secure, and properly configured. A typical day includes applying updates and patches, managing user accounts and permissions, and troubleshooting system issues as they come up.

Planning ahead is a big part of the job too: capacity planning, disaster recovery preparation, and security hardening, done specifically to prevent the kind of emergencies that otherwise eat up a sysadmin's week.

Core tasks

  • Maintaining and updating servers and network infrastructure
  • Managing user accounts, permissions, and access
  • Monitoring system health and performance
  • Applying security patches and hardening systems
  • Troubleshooting infrastructure issues
  • Planning for backups, disaster recovery, and capacity

Tools & skills used

Operating systems administration (Windows Server, Linux)Networking fundamentalsScripting for automationVirtualization and/or cloud platformsSecurity best practicesSystematic troubleshooting

Typical entry paths

  • Information Technology
  • Computer Science
  • Often accessible via IT support experience plus certifications

Common misconceptions

  • The role has shifted significantly toward cloud and automation, but hands-on infrastructure knowledge is still central.
  • It's not purely reactive; a large share of the job is proactive maintenance and planning.

Frequently asked questions

What does a Systems Administrator do?

Keeps an organization's servers, networks, and IT systems running.

What are the core tasks of a Systems Administrator?

Day to day, this typically includes: Maintaining and updating servers and network infrastructure; Managing user accounts, permissions, and access; Monitoring system health and performance.

What tools or skills does a Systems Administrator use?

Common tools and skills for this role include Operating systems administration (Windows Server, Linux), Networking fundamentals, Scripting for automation, Virtualization and/or cloud platforms.

How do people typically become a Systems Administrator?

Information Technology. Computer Science.

What's a common misconception about being a Systems Administrator?

The role has shifted significantly toward cloud and automation, but hands-on infrastructure knowledge is still central.

What college majors lead to becoming a Systems Administrator?

Majors that commonly lead here include Information Technology, Computer Science, Cybersecurity. A major shapes what you study, it isn't a guarantee of landing this specific role.

This describes what the role typically involves day to day. It's not a guarantee of hiring, salary, or advancement, actual responsibilities vary by employer, industry, and location. See our disclaimer.

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