Nathan Williams | Senior System Administrator at Tech Solutions Corp.

Summary

Highly dedicated and results-oriented System Administrator with 6 years of experience in managing complex IT infrastructures. Proven expertise in server management, network security, and delivering exceptional technical support in fast-paced environments. Successfully optimized system performance, enhanced security protocols, and streamlined operational processes, leading to significant cost savings and improved system uptime.

Experience

Senior System AdministratorTech Solutions Corp.

Austin, TXMar 2022Present

Managed and maintained over 150+ Linux and Windows servers, achieving 99.9% uptime for critical business applications.
Implemented automated patch management system across 200+ endpoints, reducing vulnerability exposure by 30%.
Administered network security tools including firewalls (Palo Alto) and intrusion detection systems, mitigating 100% of reported external threats.
Developed and deployed PowerShell scripts to automate routine tasks, saving approximately 15 hours of manual work per week.

System AdministratorInnovatech Systems

Dallas, TXJun 2019Feb 2022

Provided Tier 2/3 technical support for over 500 internal users, resolving 95% of issues within SLA targets.
Configured and maintained virtualized environments using VMware vSphere, optimizing resource utilization by 25%.
Migrated company data to a new cloud-based storage solution (AWS S3), reducing on-premise storage costs by 20%.
Managed Active Directory for 300+ user accounts, ensuring proper access controls and group policies.

Junior System AdministratorGlobal Solutions Inc.

Austin, TXJun 2018May 2019

Assisted in the deployment and configuration of 50 new workstations and servers, ensuring timely project completion.
Monitored system performance and network traffic, identifying and resolving potential bottlenecks before impact.
Conducted daily data backups and disaster recovery drills, achieving 100% data recoverability in simulated events.
Documented IT procedures and troubleshooting guides, improving new hire onboarding efficiency by 15%.

Projects

Automated Server Health Checker

Sep 2021Dec 2021

Developed a Python script to monitor CPU, memory, and disk usage across multiple servers, sending alerts for anomalies.
Reduced manual server check time by 70% and proactively identified potential issues before system failure.
Integrated with PagerDuty API for critical alerts, improving response time for high-priority incidents.

Home Network Hardening Project

Mar 2020May 2020

Implemented a custom firewall (pfSense) and configured VLANs to segregate IoT devices from the main network.
Set up a VPN server for secure remote access and encrypted all internal network traffic.
Reduced potential attack surface by 40% and enhanced overall home network security posture.

Dockerized Development Environment

Aug 2022Present

Created Docker Compose configurations for various development stacks (LEMP, MEAN) for rapid deployment.
Streamlined onboarding for new developers by providing consistent and isolated environments.
Reduced dependency conflicts and improved development cycle efficiency by 25%.

Education

The University of Texas at AustinBachelor of Science in Computer Science

Austin, TXAug 2014May 2018

Graduated Magna Cum Laude with a GPA of 3.8/4.0.
Completed capstone project on secure network architecture design, achieving an 'A' grade.
Member of the IEEE Student Branch, contributing to campus IT initiatives.

Skills

Operating Systems

Windows Server (2016, 2019)Linux (Ubuntu, CentOS)macOSWindows 10

Cloud & Virtualization

AWS EC2S3Azure ADVMware vSphereHyper-VDocker

Networking

TCP/IPDNSDHCPVPNFirewalls (Palo Alto)Cisco Routers/Switches

Scripting & Automation

PowerShellBashPythonAnsible

Monitoring & Tools

NagiosZabbixPRTGSplunkJiraServiceNow