System Administrator resume example & skills
Everything to put on a System Administrator resume in 2026 — the right skills and ATS keywords, a professional summary example, and work-experience bullet points you can adapt. Then build it in minutes with OnJob's free AI resume builder and score it against any job with the free ATS checker.
Updated 2026-06-18 · Skills and keywords based on real System Administrator roles on OnJob.io.
Key takeaways
- A strong System Administrator resume leads with the skills employers scan for: Linux administration, Windows Server, Networking, Virtualization (VMware), Backup & recovery.
- Mirror the exact job-title and skill keywords from the posting (e.g. System Administrator, Sysadmin, IT Systems Administrator) so it passes ATS filters.
- Keep it to one page if you have under ~7 years of experience, and back every bullet with a number; then check your match with OnJob's free ATS checker.
Skills to put on a System Administrator resume
These are the core System Administrator skills recruiters and ATS scanners look for. Put the ones you have in a dedicated skills section, and prove the rest inside your experience bullets.
ATS keywords for System Administrator
Mirror these exact terms from the job description to pass Applicant Tracking Systems: System Administrator, Sysadmin, IT Systems Administrator, Server Administrator, Linux administration, Windows Server, Networking, Virtualization (VMware), Backup & recovery, Bash / PowerShell, Active Directory, Patching. Then paste your resume into the free ATS checker to see your match score.
System Administrator professional summary example
A strong summary is 2–3 sentences: your title and experience, your best skills, and one quantified win. Customise the bracketed parts:
[Results-driven] System Administrator with [X years] of experience in Linux administration, Windows Server, Networking. Proven ability to install, configure and maintain servers and operating systems and manage user accounts, permissions and access control. Looking to bring [your strongest achievement, with a number] to [Target Company] as a System Administrator.
System Administrator work-experience bullet points
Example bullets for a System Administrator — start with an action verb and add your own numbers (%, ₹, time saved, scale) to make each one land:
- Install, configure and maintain servers and operating systems — [add a metric, e.g. "for 5+ projects" or "cutting time by 30%"]
- Manage user accounts, permissions and access control — [add a metric, e.g. "for 5+ projects" or "cutting time by 30%"]
- Apply patches, updates and security hardening — [add a metric, e.g. "for 5+ projects" or "cutting time by 30%"]
- Set up and test backups and disaster-recovery procedures — [add a metric, e.g. "for 5+ projects" or "cutting time by 30%"]
- Monitor system performance, uptime and capacity — [add a metric, e.g. "for 5+ projects" or "cutting time by 30%"]
- Troubleshoot hardware, OS and service issues — [add a metric, e.g. "for 5+ projects" or "cutting time by 30%"]
What a System Administrator resume needs in education
- Experience administering Linux and/or Windows servers
- Knowledge of networking, virtualisation and backups
- Scripting skills (Bash/PowerShell) for automation
- Understanding of security, patching and access control
- Relevant certifications (RHCSA, MCSA) are a plus
Build your System Administrator resume in minutes
Drop in these skills and bullets, let AI polish the wording, and check your ATS score against any System Administrator job — free to start.
System Administrator resume — FAQs
What skills should I put on a System Administrator resume?
The most relevant System Administrator resume skills are: Linux administration, Windows Server, Networking, Virtualization (VMware), Backup & recovery, Bash / PowerShell, Active Directory, Patching, Monitoring. List the ones you genuinely have in a dedicated "Skills" section and weave the rest into your experience bullets so they pass ATS keyword matching.
What are the best ATS keywords for a System Administrator resume?
Strong ATS keywords for a System Administrator include the job title itself (System Administrator, Sysadmin, IT Systems Administrator, Server Administrator) plus core skills like Linux administration, Windows Server, Networking, Virtualization (VMware), Backup & recovery. Mirror the exact terms from the job description you are applying to, and check your match with OnJob's free ATS resume checker.
How do I write a professional summary for a System Administrator?
Open with your title and years of experience, name your 2–3 strongest System Administrator skills, then add one quantified achievement. Keep it to 2–3 sentences. Example: "[Results-driven] System Administrator with [X years] of experience in Linux administration, Windows Server, Networking. Proven ability to install, configure and maintain servers and operating systems and manage user accounts, permissions and access control. Looking to bring [your strongest achievement, with a number] to [Target Company] as a System Administrator."
What should a System Administrator put in the work-experience section?
Use 3–6 bullet points per role, each starting with an action verb and ending with a measurable result. For a System Administrator, cover responsibilities like install, configure and maintain servers and operating systems; manage user accounts, permissions and access control; apply patches, updates and security hardening — and add numbers wherever you can.
How long should a System Administrator resume be?
One page if you have under ~7 years of experience (most freshers and mid-level System Administrators), and up to two pages for senior System Administrators with a longer track record. Recruiters skim — keep it tight and lead with impact.
Everything about System Administrator on OnJob
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