System Administrator Network Security

Gavin DuVall

**** ****** ***** **. *********, Texas 77539 512-***-**** ******.*****@*****.***

Profile

Accomplished System Administrator with over 15 years of hands-on experience in designing, deploying, and maintaining complex IT infrastructures. Proven expertise in managing hybrid cloud environments, system automation, network security, and high-availability systems. Skilled in optimizing performance, reducing costs, and ensuring operational uptime. Adept at troubleshooting, monitoring, and providing scalable solutions to meet business needs in fast-paced environments. Professional Experience

CORE COMPETENCIES

- System Administration:

Windows Server, Linux/Unix, VMware,

Hyper-V

- Cloud Platforms: AWS, Microsoft

Azure, Google Cloud

- Networking: TCP/IP, DNS,

DHCP, VPN, LAN/WAN, Routing &

Switching

- Security & Monitoring:

Nagios, Splunk, Firewalls, IDS/IPS,

Wireshark

- Experience demonstrating

attention to detail and strong

organizational skills

- Experience working

independently in a fast-paced

environment

- Proven communication skills

and ability to be consultative to our

internal customers

- Intermediate proficiency in

Microsoft Office Products: Word,

Excel, PowerPoint

- Automation & Scripting: Bash,

PowerShell, Python

- Disaster Recovery & Backup

Solutions: Veeam, Acronis

- Configuration Management:

Ansible, Puppet, Chef

- Virtualization: VMware ESXi, Hyper-V,

Docker

- Salesforce admin experience

- Taleo admin experience

- Experience with onboarding

technologies

- Experience working with integrating

files between Human Resources

Information Systems

- Experience with Taleo

Connect Client

SYSTEM ADMINISTRATOR SURVEY 1 INC JUNE 2014 – JULY 2024

- - Designed, deployed, and managed highly scalable and fault-tolerant system architectures to support company growth and business continuity.

- - Administered hybrid environments of Windows and Linux servers across physical and virtualized infrastructures, achieving 99.9% uptime.

- - Led the successful migration of on-premises infrastructure to Office 365, reducing operational costs by 20% while improving system reliability and disaster recovery capabilities.

- - Automated administrative tasks with PowerShell and Bash scripts, streamlining workflows and reducing the potential for human error.

- - Monitored network performance and system health using tools like Nagios and Splunk to proactively identify and resolve issues before they affected operations.

- - Managed system backups, disaster recovery, and high-availability solutions for critical business applications.

- - Collaborated with the security team to implement firewalls, VPNs, and intrusion detection/prevention systems (IDS/IPS), decreasing security vulnerabilities by 40%. SYSTEM ADMINISTRATOR / MANAGER FRIENDLY COMPUTERS JAN. 2009 – MAY 2014

- Oversaw the maintenance and administration of diverse IT systems, including Windows and Linux-based servers, ensuring system stability and uptime at 99.9%.

- Configured and maintained network devices such as routers, switches, and firewalls to ensure secure and efficient network operations.

- Designed and implemented monitoring solutions using Nagios and Splunk, enhancing proactive system health checks and troubleshooting capabilities.

- Developed and enforced IT security policies, significantly reducing the risk of data breaches and increasing overall system security.

- Led end-to-end IT projects, including system upgrades, migrations, and infrastructure deployments, ensuring projects were completed on time and within budget.

- Provided guidance and training to junior engineers and staff, fostering a collaborative team environment. Education

AUSTIN COMMUNITY COLLEGE OCTOBER 2009

CONTINUING EDUCATION YEARLY

Technical Projects & Achievements

Cloud Migration:

-Led the full migration of on-premises systems to AWS, including server instances, databases, and storage, resulting in a 20% reduction in infrastructure costs and improved scalability. Network Infrastructure Upgrade:

-Spearheaded the design and implementation of a new high-speed network backbone, improving data throughput by 50% and minimizing downtime during peak business hours. Automated Backups and Monitoring:

-Automated backup processes and implemented advanced monitoring using Nagios, reducing downtime and increasing team productivity by 30%.

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