What Does a System Administrator Do? Your Career Guide

System administrators—also known as sysadmins—are information technology (IT) professionals who make sure an organization’s computer systems are functioning properly and meet business requirements. Sysadmins support, troubleshoot, and maintain computer servers and networks. In this article, we'll discuss the role of system administrators, including salary range, technical skills, and popular certifications.

Advancing your IT career? Get hands-on experience with the system administrator toolkit and learn how to manage IT infrastructure services in Google's online course, System Administration and IT Infrastructure Services, part of the Google IT Support Professional Certificate program.

What does a system administrator do?

A system administrator job description might include: 

• Managing Windows, Linux, or Mac systems

• Upgrading, installing, and configuring application software and computer hardware

• Troubleshooting and providing technical support to employees

• Creating and managing system permissions and user accounts

• Performing regular security tests and security monitoring

• Maintaining networks and network file systems

System administrator salary and job outlook

A system administrator’s average base salary in the US is $95,360, according to the US Bureau of Labor Statistics (BLS) [1]. Salaries can vary depending on experience and the cost of living of where you’re located. Computer systems administrator employment is expected to decline slightly from 2023 to 2033, however, an average of 16,400 job openings are still expected each year.

Read more: System Administrator Salary: 2025 Guide

System administration vs. network administration

Some organizations might use system administrator and network administrator interchangeably due to the many overlapping responsibilities, but these roles have their differences. System administration focuses on servers and computer systems, while network administrators work more specifically with network-related tasks and equipment, like setting up routing, IP addresses, and maintaining Local Area Networks (LAN).

If you’re in a smaller organization, these responsibilities might be folded into one role, while larger organizations may tend to differentiate them. Since systems and networks are often intertwined, it’s not rare to see job descriptions that require knowledge of both.

How to become a system administrator

Becoming a system administrator will require learning some specialized IT skills. If you're new to the field, you might consider one of the following system administrator career path roles below. If you're already an IT professional, earning a certification or taking online courses can provide experience with industry standard tools and showcase your skills to potential employers.

Already have some experience? Sharpen your system administration skill set for free with the online course, Information Systems Auditing, Controls and Assurance, offered by the Hong Kong University of Science and Technology. In as little as eight hours, you can learn a three-step risk management framework and familiarize yourself with general information systems auditing procedures.

System administrator jobs: entry-level feeder roles

If you're transitioning into IT from a related career or considering starting down the path to system administration, these jobs can serve as stepping stones to your goal and prepare you for success in your first role as a system administrator.

• Help desk technician

• IT support specialist

• Network analyst

• Computer systems analyst

System administrator skills

As a sysadmin, you’ll need to develop a core set of skills that will allow you to make sure the computer systems in your organization are running smoothly. Here are the top skills that you’ll want on your resume:

• In-depth knowledge of operating systems: Whether it’s Windows, Linux, or Mac, hiring managers generally look for competency in administering the operating system used in their company. Windows and Linux operating systems have been widely embraced and are good systems to start with, though it’s a good idea to check if your industry favors one over others.

• Familiarity with hardware: Working physical devices—such as servers or printers—will be an important part of a system administrator's job. 

• Cloud computing skills: Familiarity with cloud applications like Office365, Google Cloud Platform, and AWS can give you a boost in the hiring process.

• Knowledge of networks: Being able to set up and maintain Local Area Networks (LAN) and Wide Area Networks (WAN), in addition to setting up network security features like firewalls, are often expected of system administrators. This might often be the case at smaller companies, where IT professionals are expected to wear many hats.

• Communication and interpersonal skills: In addition to working on a team, sysadmins will often be expected to help other employees that don’t have the same technical knowledge, through help desk support or other means. Being able to communicate well will be a key part of a system administrator’s successful day-to-day tasks.

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Certifications for system administrators

There are several certifications you can take in order to gain experience as a systems administrator.

Windows Server Administration Fundamentals

Having knowledge of Windows servers is likely to be a significant asset as a system administrator. The Windows Server Administration Fundamentals certification will qualify your expertise in Windows servers, networking, Active Directory, account management, and system recovery tools. 

Google IT Support Professional Certificate

The Google IT Support Professional Certificate equips you with the skills to tackle common sysadmin tasks such as customer support and troubleshooting. It also introduces you to commonly used systems like Linux and Domain Name Systems, and prepares you for the CompTIA A+ exam. The course will earn you an industry-recognized professional certificate for your study and requires no previous experience.

Red Hat System Administrator Certification

Getting the Red Hat System Administrator Certification will give you the needed experience with Linux operating systems to land an entry-level job in systems administration.

CompTIA Server+ or A+

CompTIA offers several certifications that are designed to prepare you for entry-level positions. The Server+ or A+ certifications in particular will leave you with the necessary skills and experience under your belt to start applying for entry-level IT jobs. While you’ll gain specialized knowledge around servers with the Server+ certification, the A+ certification covers a broader set of skills applicable to other aspects of IT.

Preparing for the sysadmin interview

Preparing for any interview means anticipating some questions ahead of time and knowing how to answer them. Here are some basic questions you might encounter when you interview for a system administrator role.

• Describe your experience with hardware.

• How would you deal with a virus?

• How would you know when to upgrade a server?

• Tell us about a time when you weren’t able to solve an issue. What did you do?

• What qualities do you have that make you a good system administrator?

Interviewing for IT jobs

Since IT jobs are highly technical, interviewers are likely to ask you several technical questions in addition to more personal behavioral questions. Be prepared for both. Refresh your IT skills by mentally walking through several tasks you know how to perform, and practice explaining them aloud.

It’s a good idea to think about some stories of when something went well for you, and when things didn’t go so well—and what you did in that situation to make it better. Having concrete examples at the ready can help you feel mentally prepared and appear more confident to employers.

Sharpen your IT and systems administration skills with Coursera

Explore the skills and tools used by IT professionals by enrolling in the Google IT Support Professional Certificate. You'll learn to perform day-to-day IT support tasks like computer assembly, wireless networking, and customer service to get job-ready for an entry-level IT job in just six months.

If you want to focus on sysadmin skills, learn best practices for selecting hardware, software, and vendors to build a robust infrastructure through the Google's System Administration and IT Infrastructure standalone course. If you change your mind and want to earn the certificate, you can always switch to the full program.

Frequently asked questions (FAQ)