Systems Administrator resume examples
This page has 12 one-page systems administrator resume examples, from systems, Linux, server and platform administrators to systems, infrastructure and storage engineers, and on to lead and principal systems engineers. The note under each sample says which uptime, fleet size, automation and recovery numbers it puts first.
Systems Administrator Resume Example
Systems administrator postings name Active Directory, troubleshooting, DNS, VMware and PowerShell, and each one appears in a bullet with a measured result such as 99.95% uptime or a 10-minute onboarding script. The bachelor's degree employers require and the Security+ and Azure certificates sit where a recruiter checks first.
Why this resume works:
- Administer 85 Windows Server 2019 and 2022 VMs on a 4-host VMware vSphere cluster with 99.95% uptime in 2025.
- Automate onboarding in PowerShell across Active Directory and Microsoft 365, cutting account setup from 45 minutes to 10.
- Run monthly patching and Veeam backup checks, and restore 12 critical servers in each quarterly disaster recovery drill.
Senior Systems Administrator Resume Example
Senior systems administrator postings ask for PowerShell, troubleshooting, Active Directory and VMware, plus Ansible and Group Policy, and this resume shows each at scale: 1,200 servers, 2,400 users and 900 servers patched a month. Nine years of experience and team leadership fit the senior level, and the computer science degree and two platform certifications answer the education and credential asks up front.
Why this resume works:
- Lead 4 administrators who run 1,200 Windows Server and Linux servers across 2 data centers at 99.98% uptime.
- Own Active Directory and Group Policy for 2,400 users, with zero critical findings in the last 3 annual audits.
- Build Ansible playbooks and PowerShell modules that patch 900 servers a month inside a 4-hour window.
Linux Systems Administrator Resume Example
Linux systems administrator postings name Python, Ansible, Bash, RHEL and VMware most, and every one of them appears in a bullet tied to a fleet size, build time or patch success rate. RHCSA and RHCE certificates and a computer science degree back up the 5 years of hands-on Linux work the summary claims.
Why this resume works:
- Administer 700 RHEL 8 and 9 and Ubuntu servers across VMware and AWS at 99.97% availability.
- Manage Ansible roles in GitLab that build a new server in 20 minutes instead of 2 days.
- Run monthly patching for the full fleet with automated pre-checks, keeping failed patches under 1%.
Server Administrator Resume Example
Server administrator postings ask for PowerShell, Windows Server, DNS, VMware, Active Directory and IIS, and each one is shown here on real server counts with uptime, compliance and run-time results. The 6 years of server work fit the experience employers ask for, and the Microsoft and Server+ certificates are listed where a recruiter scans first.
Why this resume works:
- Administer 260 Windows Server 2016 to 2022 hosts on VMware, holding claims systems at 99.96% uptime.
- Run 45 IIS web servers for agent portals, renewing certificates and tuning app pools to cut timeouts by 60%.
- Deploy monthly patches with PowerShell and SCCM, reaching 98% compliance within 10 days of each release.
Platform Administrator Resume Example
Platform administrator postings name Python, SQL, Power BI, AWS, Microsoft 365, Azure and Okta, and this resume puts each one in a bullet with a concrete outcome, from 35 SAML app connections to $150K in reclaimed licenses. FedRAMP and Security+ cover the compliance asks that federal employers add to these postings.
Why this resume works:
- Administer Okta for 3,000 users and 140 apps, connecting 35 new apps through SAML and SCIM.
- Manage Microsoft 365 and OneDrive policies, reclaiming 400 unused licenses worth $150K a year.
- Provision AWS and Azure accounts with Terraform modules that meet FedRAMP baseline controls.
Systems Engineer Resume Example
Systems engineer postings ask for troubleshooting, Python, DNS, AWS, VMware and Active Directory, and each of those carries a result here, from 2-hour server builds to fewer repeat outages. The 5 years of experience fit the experience employers request, and the engineering degree and AWS and VMware certificates meet the education and credential asks.
Why this resume works:
- Design and run a 24-host VMware cluster and 90 AWS instances that serve billing and grid systems.
- Automate server builds with Python and PowerShell, taking a new Windows or Linux host from 3 days to 2 hours.
- Engineer Active Directory sites, DNS and certificate services for 1,500 users across 22 offices.
Senior Systems Engineer Resume Example
Senior systems engineer postings ask for Python, systems engineering, PowerShell, Active Directory and troubleshooting, along with requirements management, and this resume shows all of them on platforms of 2,100 servers and 6,000 users. Nine years, mentoring and design ownership fit the senior level, and the engineering degree and AWS Professional certificate sit up front.
Why this resume works:
- Design the hybrid platform for 2,100 servers across 2 VMware data centers and 3 AWS regions.
- Lead requirements management for 12 infrastructure projects a year, from stakeholder sign-off to test plans.
- Direct an Active Directory and DNS redesign that cut login failures at 140 branches by 70%.
Lead Systems Engineer Resume Example
Lead systems engineer postings ask for systems engineering, trade studies, validation, interface control and verification, and each one heads a bullet with program-scale numbers such as 2,300 requirements and 9 subcontractors. Twelve years, a team of 14 and an active Secret clearance in the summary match the lead level and the clearance many defense employers require.
Why this resume works:
- Lead 14 engineers on the system architecture of a ground control segment with 2,300 requirements.
- Run trade studies on processing and hosting options, including a Kubernetes design that cut hardware by 30%.
- Chair the interface control working group for 9 subcontractors and own 26 interface control documents.
Principal Systems Engineer Resume Example
Principal systems engineer postings ask for systems engineering, MATLAB, DOORS, SysML, MBSE, Cameo and requirements management, and this resume shows each on a named program scale such as 3,100 requirements or a 70-engineer Cameo model. Fifteen years, coaching senior engineers and a systems master's degree fit the principal level employers describe.
Why this resume works:
- Set the MBSE approach for a $400M combat system upgrade, with 70 engineers working in one Cameo model.
- Own requirements development for 3,100 system requirements, linking each to SysML elements and DOORS objects.
- Chair technical reviews with Navy customers and resolve 40+ design issues per milestone across 6 suppliers.
Infrastructure Engineer Resume Example
Infrastructure engineer postings ask for Python, AWS, Terraform and Kubernetes, plus Ansible, Bash and Docker, and every one of them appears in a bullet with a scale or savings figure such as 180 services or $380K a year. Terraform and Kubernetes certificates back the core tools, and 6 years of experience fit the experience employers request.
Why this resume works:
- Manage 3 production Kubernetes clusters on AWS EKS running 180 services at 99.95% availability.
- Write Terraform modules for VPCs, DNS and databases so 95% of infrastructure changes pass code review.
- Build Python and Bash tools for certificate and secret rotation, retiring 12 manual monthly tasks.
Senior Infrastructure Engineer Resume Example
Senior infrastructure engineer postings name Terraform, Python, Kubernetes, AWS and Docker, along with CI/CD pipelines and Ansible, and this resume ties each to a real result such as 14 teams on shared pipelines or a 22% cost cut. Nine years, mentoring and design ownership match the senior level, backed by AWS Professional and CKA certificates.
Why this resume works:
- Lead design of 6 Kubernetes clusters on AWS and Azure that serve peaks of 50,000 requests per second.
- Own Terraform standards and CI/CD pipelines for infrastructure used by 14 product teams.
- Cut setup time for new environments from 2 weeks to 1 day with Docker images and Ansible baselines.
Storage Engineer Resume Example
Storage engineer postings ask for NetApp, SAN, NAS, Python and VMware, plus capacity planning and replication, and each appears in a bullet with a size or recovery figure such as 4 PB or a 1-hour RPO. Six years of storage work fit the experience employers ask for, and the NCDA certificate answers the NetApp requirement directly.
Why this resume works:
- Manage 4 PB across NetApp AFF and Dell EMC PowerMax arrays at 99.99% availability in 2025.
- Run capacity planning for 2 data centers, forecasting purchases 12 months out and avoiding 2 emergency buys.
- Configure SnapMirror replication for 600 volumes and test failover twice a year against a 1-hour RPO.
Check your systems administrator resume against a real job posting
- Paste a systems administrator job posting into the job match score tool to see which of its skills your resume is missing.
- Upload your resume to the ATS resume checker to read the text an applicant tracking system gets from it.
Systems Administrator resume sample (text you can copy)
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Systems Administrator resume sample
MARCUS DELGADO
Systems Administrator
Columbus, OH · (614) 555-0147 · [email protected] · linkedin.com/in/marcusdelgado
SUMMARY
Systems Administrator with 5 years of experience running Windows Server, Active Directory and VMware environments for healthcare and manufacturing sites of up to 640 users. Automates account and patch work in PowerShell, manages Microsoft 365 and Azure tenants, and writes the runbooks the help desk uses for DNS and DHCP troubleshooting.
EXPERIENCE
Systems Administrator, Scioto Ridge Health Partners, Columbus, OH | 03/2023 - Present
- Administer 85 Windows Server 2019 and 2022 VMs on a 4-host VMware vSphere cluster with 99.95% uptime in 2025.
- Automate onboarding in PowerShell across Active Directory and Microsoft 365, cutting account setup from 45 minutes to 10.
- Run monthly patching and Veeam backup checks, and restore 12 critical servers in each quarterly disaster recovery drill.
- Document DNS, DHCP and Group Policy settings in 40 runbooks that lowered help desk escalations by 30%.
Junior Systems Administrator, Hilliard Precision Components, Hilliard, OH | 06/2021 - 02/2023
- Migrated 6 file servers to Azure Files and SharePoint, retiring 14 TB of aging on-site storage.
- Resolved 25 escalated tickets a week covering Windows, Linux, network and printer issues on the shop floor.
- Configured firewall rules and VLANs for 120 plant-floor devices with the network vendor.
- Rebuilt DHCP scopes and DNS zones after a domain controller failure, restoring service in 3 hours.
IT Help Desk Technician (Part-Time), Ohio Valley Tech Services, Columbus, OH | 09/2019 - 05/2021
- Closed 30+ tickets a week on password resets, Wi-Fi, email and software installs.
- Imaged and deployed 150 laptops a year from standard Windows builds.
- Wrote 20 knowledge base articles that reduced repeat calls about VPN setup.
- Replaced failing switches and access points at 8 client offices during weekend maintenance windows.
EDUCATION
Bachelor of Science, Information Technology, Franklin University, Columbus, OH | 05/2021
SKILLS
Windows Server, Active Directory, VMware, PowerShell, Microsoft 365, Azure, DNS, DHCP, Linux, Troubleshooting
CERTIFICATIONS
CompTIA Security+, CompTIA (04/2022)
Microsoft Certified: Azure Administrator Associate, Microsoft (09/2024)
How to write a systems administrator resume
Write a systems administrator resume summary
- Open with your years and the environment you run: Windows Server or Linux, on-premises, VMware, AWS or Azure, and the number of servers or users.
- Name the platforms you own, such as Active Directory, Microsoft 365, RHEL or Okta, rather than writing "IT infrastructure".
- Say how you automate, such as PowerShell, Python, Bash, Ansible or Terraform, and what that automation replaced.
- Add the industry and any clearance or certification that gates the job, such as an active Secret clearance or Security+.
Systems Administrator summary (mid level)
Systems Administrator with 5 years of experience running Windows Server, Active Directory and VMware environments for healthcare and manufacturing sites of up to 640 users. Automates account and patch work in PowerShell, manages Microsoft 365 and Azure tenants, and writes the runbooks the help desk uses for DNS and DHCP troubleshooting.
Senior Systems Administrator summary (senior level)
Senior Systems Administrator with 9 years of experience running hybrid Windows Server and Linux estates of up to 1,200 servers for financial and logistics firms. Owns Active Directory and Group Policy design and VMware capacity, and builds the PowerShell, Python and Ansible automation that replaced most manual build and patch work.
Lead Systems Engineer summary (lead level)
Lead Systems Engineer with 12 years of systems engineering on missile defense and satellite ground programs, from system architecture through verification and validation. Leads teams of up to 14 engineers on trade studies, interface control and systems integration, briefs Army and space customers at major design reviews, and holds an active DoD Secret clearance.
Write systems administrator experience bullets
- Show scale and reliability together: servers or VMs managed, users supported and uptime for the year.
- Put a before-and-after on automation, such as account setup cut from 45 minutes to 10 or server builds from 2 days to 20 minutes.
- Report patching and recovery results: compliance within a set number of days, failed patch rate, servers restored in a DR drill.
- Prove your troubleshooting with incident numbers, such as pages closed without escalation or repeat outages cut.
Systems Administrator experience bullets
- Administer 85 Windows Server 2019 and 2022 VMs on a 4-host VMware vSphere cluster with 99.95% uptime in 2025.
- Automate onboarding in PowerShell across Active Directory and Microsoft 365, cutting account setup from 45 minutes to 10.
- Run monthly patching and Veeam backup checks, and restore 12 critical servers in each quarterly disaster recovery drill.
- Document DNS, DHCP and Group Policy settings in 40 runbooks that lowered help desk escalations by 30%.
Pick the skills for a systems administrator resume
- List communication, problem-solving, troubleshooting, Python and PowerShell where they are true for you.
- Of PowerShell, Active Directory, DNS, VMware, DHCP, Linux and Bash, list the ones you use and show each in a bullet.
- Group skills by area, such as operating systems, virtualization and cloud, scripting, identity and backup, so a reader finds Windows Server or Veeam in seconds.
Do's and don'ts
Do this
- Give server, VM and user counts in your latest job so the reader can judge scale.
- Name versions where they matter, such as Windows Server 2022 or RHEL 9.
- List certifications such as Security+, RHCSA, AWS or Microsoft near the top; some federal and defense employers require Security+ or an active Secret clearance.
- Show documentation work: runbooks written, configurations recorded, escalations reduced.
Avoid this
- Don't list every tool you have touched; keep the ones you can back up with a bullet.
- Don't write "maintained servers" without saying how many, on what platform and with what uptime.
- Don't send a help desk resume to a sysadmin job; move ticket work down and server, identity and automation work up.
- Don't apply to defense systems engineer roles with an IT resume; those postings ask for requirements, MBSE, verification and validation.
Related resume examples
- IT Support Specialist
- IT Manager
- DevOps Engineer
- Cybersecurity Analyst
- Sales Engineer
- Network Engineer
- AI Engineer
- Solutions Architect
Systems Administrator resume questions
What should I put on a systems administrator resume?
A summary with your years, platforms and scale, jobs with uptime, automation, patching and recovery numbers, a grouped skills list and your degree and certifications.
How do I write a Linux systems administrator resume?
Name the distributions and fleet size, such as 700 RHEL and Ubuntu servers, and the platforms they run on. Show Ansible, Bash and Python work with build times or patch success rates, and add on-call results. RHCSA or RHCE certificates back up that work.
What is the difference between a systems administrator and a systems engineer resume?
A systems administrator resume centers on running systems: uptime, patching, accounts, backups and fixes. A systems engineer resume adds design and build work, such as new clusters, AD redesigns, automation and root cause reviews. In defense and aerospace, systems engineer postings mean something else, with requirements management, DOORS, MBSE and verification and validation.
What makes a senior systems administrator resume different?
A senior resume shows ownership and scale: platforms you designed, audits passed, people you lead and automation that replaced manual work. Give numbers such as 1,200 servers or 900 servers patched a month.
Which certifications help a systems administrator resume?
Use the ones that match the stack: Microsoft or Azure for Windows shops, RHCSA or RHCE for Linux, AWS for cloud, VMware for virtualization and NetApp for storage. Some federal and defense employers require CompTIA Security+ under DoD 8570/8140 or an active DoD Secret clearance. List each credential with its year in a certificates section near the top.