Professional Resume Template for
System Administrator
Liam T. Harper
Portland, OR
(503) 555-0142
liam.harper@email.com
linkedin.com/in/liam-harper-sysadmin | github.com/liamharper-ops | liamharper.dev
Professional Summary
Systems-focused System Administrator with 5 years of tenure in configuring, securing, and maintaining high-availability Linux and Windows server infrastructures. Proven track record of optimizing network reliability, maintaining a consistent 99.99% system uptime, and implementing automated patch pipelines that cut server configuration time by 35% across the organization. Expert in Red Hat Enterprise Linux, Windows Server 2019/2022, VMware ESXi virtualization, and AWS cloud resources. Collaborative team member skilled in leveraging Ansible, Terraform, and scripting languages like Bash and PowerShell to eliminate manual errors and streamline daily infrastructure operations.
Work Experience
System Administrator — NexaTech Systems
Portland, OR | August 2024 – Present
- Maintained 140+ Linux and Windows servers across multi-site data centers, achieving a consistent 99.99% system uptime and resolving 94% of incoming infrastructure support tickets within established service level agreement guidelines.
- Automated server provisioning and VM configuration tasks utilizing Ansible and Terraform, reducing average deployment times by 45% (from 4 hours to 13 minutes) and eliminating manual entry errors for 80+ deployments.
- Managed Active Directory infrastructure and single sign-on configurations for 450+ corporate users, automating employee onboarding and offboarding workflows to reduce manual administration time by 18 hours per month.
- Configured AWS VPC, EC2, and S3 resources for staging environments, saving the department 22% in monthly cloud hosting expenditures, which equates to approximately $4,500 in recurring budget savings.
Associate System Administrator — Beacon Financial Solutions
Dallas, TX | June 2021 – July 2024
- Executed monthly operating system security updates and software patches across 95 servers, resolving 98% of identified vulnerabilities within 14 days of release and aligning system configs with SOC 2 compliance.
- Configured and maintained system health monitoring utilizing Nagios and Prometheus, which decreased average response time for critical infrastructure alerts by 30%, saving an average of 4 hours per outage event.
- Administered automated nightly backups and replication tasks using Veeam software, securing 4.2 TB of critical corporate data and achieving zero data loss across 18 successful recovery drills.
- Collaborated with senior engineering teams to migrate the Active Directory schema from Windows Server 2012 to 2019, transitioning 300+ local workstations with zero business disruption or system downtime.
Education
Bachelor of Science in Information Technology
Western Oregon University · Monmouth, OR · 2021
Skills
Linux (Red Hat Enterprise Linux, Ubuntu), Windows Server (2016/2019/2022), Active Directory, VMware ESXi, AWS (VPC, EC2, S3), Ansible, Terraform, Bash, PowerShell, Veeam, Nagios, Prometheus, TCP/IP, DNS, DHCP, Firewall Administration, Backup & Recovery
Projects
On-Premises to Cloud Infrastructure Migration
Role: Lead Systems Administrator
Tools: AWS (EC2, VPC, S3), Ansible, Terraform, Bash
Successfully migrated 14 legacy on-premises servers to AWS cloud environments within 6 months, reducing infrastructure hosting costs by 28% and increasing disaster recovery recovery-point-objective (RPO) reliability from 24 hours to 15 minutes.
Automated Server Patching Pipeline
Role: System Administrator
Tools: Ansible, Git, Python
Designed and implemented an automated configuration management pipeline for 120 Linux nodes, slashing monthly security patch deployment time from 16 hours to 45 minutes while achieving 100% compliance alignment.
Certifications
- Red Hat Certified System Administrator (RHCSA) (2023)
- CompTIA Security+ (2022)
Additional information
- Languages: English (Native), Spanish (Conversational)
- Volunteer Work: Technical support volunteer for regional public libraries (2022-present)
- Availability: 2 weeks notice
Job Market Insights
Market data and opportunities for
System Administrator
Job Market Insights
$75,000
-
$115,000
Avg:
$94,000
Growth Outlook:
The employment of network and computer systems administrators is projected to decline slightly by 4% from 2024 to 2034. Despite this general decline, approximately 14,300 average annual job openings are anticipated as workers transition to other roles or retire. The position is undergoing a transformation, with growing demand for hybrid administrators who manage both on-premises infrastructures and cloud environments (AWS, Azure) while automating routine systems operations using scripting languages.
-4% growth (decline) over 10 years
Key Skills Required
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