What Does a System Administrator Do? 2025 Career Guide

System administrators—also known as sysadmins—are information technology (IT) professionals who make sure an organisation’s computer systems are functioning and meet the needs of the organisation. System administrators support, troubleshoot, and maintain computer servers and networks.

What is the role of a system administrator? Tasks and responsibilities

A system administrator’s 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 administration vs network administration

Some organisations might use system administrator and network administrator interchangeably, since they have many overlapping responsibilities; however, there are differences. System administration focuses on servers and computer systems, whilst network administrators work more specifically with network-related tasks and equipment, like setting up routing, internet protocol (IP) addresses, and maintaining local area networks (LANs).

If you’re in a smaller organisation, these responsibilities might be folded into one role, whilst larger organisations 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.

System administrator salary 

According to Glassdoor, a system administrator’s average base salary in India is reported to be ₹5,42,000, as of June 2025 [1]. Salaries can vary depending on experience and the cost of living where you’re located. 

Many system administrators work towards more advanced roles in the field as they gain experience, such as a senior system administrator. As you gain more experience to pursue advanced roles, you can expect a salary increase.

How to become a system administrator

Becoming a system administrator will entail learning some specialised skills. Earning a certification can bring you the needed experience and enhance your resume.

Skills you need as a system administrator

As a system administrator, you’ll need to develop a core set of skills that will allow you to make sure the computer systems in your organisation 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 favours one over others.

• Familiarity with hardware: Working with 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 Microsoft 365, Google Cloud, and Amazon Web Services (AWS) can give you a boost in the hiring process.

• Knowledge of networks: Being able to set up and maintain local area networks (LANs) and wide area networks (WANs), in addition to setting up network security features like firewalls, is 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.

Certifications for system administrators

There are several certifications you can take in order to gain experience as a system 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 system (DNS) and prepares you for the CompTIA A+ exam. Though not a certification, the course will earn you an industry-recognised Professional Certificate at the end. It requires no previous experience.

Red Hat Certified System Administrator

Getting the Red Hat Certified System Administrator will give you the needed experience with Linux operating systems to land an entry-level job in system 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 to start applying for entry-level IT jobs. Whilst you’ll gain specialised 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 couldn’t solve an issue. What did you do?

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

Interviewing for system administrator jobs

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

Learn more about system administrator roles and responsibilities on Coursera

As computers grow in importance in virtually every sector of the economy, system administrators play a vital role in making sure computer systems are running smoothly and securely. They are likely to be an important part of the IT sector for the foreseeable future.

Getting started as a system administrator can be as simple as enroling in a course. Check out the Google IT Support Professional Certificate on Coursera to see if it meets your needs—and get a seven-day free trial. This certificate is designed to help you gain job-ready skills needed to enter your first IT position. You can also use the strong foundation built in this course to continue improving your IT skills and work towards more advanced roles in this expanding industry.

Frequently asked questions (FAQ)