Dominic Simmons
Summary
Network Engineer with expertise in designing and optimizing robust network infrastructures. Achieved a 30% increase in network productivity while enhancing security measures to protect critical data. Committed to implementing innovative solutions that reduce cyber threats and ensure network reliability.
Overview
9
9
years of professional experience
Work History
Network Engineer
Southeast Georgia Health Systems
04.2025 - Current
- Designed and deployed a cutting-edge 10G/100G Arista 7050 leaf-spine infrastructure across two data centers.
- Configured Arista CloudVision Portal for automated network provisioning, zero-touch provisioning for 50+ nodes.
- Build, configure, install Palo Alto and FortiGate firewalls with IPsec vpn tunneling for local and remote sites.
- Monitored and optimized network performance using monitoring tools to enhance reliability.
- Prepared network equipment for deployment to replace end-of-life Extreme access points and switches.
- Create documentation of network standards, configurations, methods of procedures and cabling layouts.
- Gained practical experience in routing, switching, and network security protocols. and demonstrated knowledge on the routing, switching and network information security.
- Resolved application and hardware issues for hospital systems, supporting operational efficiency for patient care.
Network Engineer
Immanuel Tech
02.2019 - 04.2025
- Managed Palo Alto and FortiGate NGFW firewalls, enhancing network security and ensuring compliance with NIST guidelines.
- Perform configuration changes to ensure that multiple companies' data, voice, and wireless networks are secure.
- Implement and maintain security across VMWare, Azure, and Hyper-V, increasing system integrity by 40%.
- Deployed and managed disaster recovery solutions for Veeam, HPE Nibble SAN, and Nutanix Cloud Infrastructures, safeguarding critical data and minimizing downtime.
- Monitored network performance and implemented corrective actions.
- Worked with leadership team to improve wired and wireless network infrastructure, resulting in uptime of 99.99%.
- Configure, manage, and troubleshoot various types of VPN tunnels.
- Tracked and organized support tickets, ensuring timely resolution and compliance with documentation standards to improve service delivery.
- Conducted engineering and implementation tasks, ensuring proper maintenance of networking systems.
- Managed the deployment and monitoring of Juniper, Cisco, and Meraki networks, improving system efficiency by 25%.
- Solve issues with applications and services hosted on public and private cloud resources.
- Design and deploy Azure & AWS IaaS cloud environments based on client's business requirements.
- Planned and implemented automated backups and fail-over configurations.
- Having a clear grasp of networking protocols and technologies (like TCP/IP, VLANS, BGP, IS-IS and OSPF).
- Troubleshoot connectivity and security issues with Ring Central VOIP and make corrective actions.
- Troubleshoot various high-availability firewalls, servers, routers, and load balancer devices.
- Configure software and hardware for Active Directory integrations.
Lab Tech Engineer
Immanuel Tech
01.2018 - 02.2019
- Developed and maintained lab infrastructure mirroring Deutsche Bank’s primary production network environment.
- Constructed, deployed, and administered network infrastructure including Juniper firewalls and Cisco switches.
- Deploy network architecture for VMware ESXI Virtual & Azure server environments.
- Established remote site connectivity through VPN, Site-to-Site, and IPSEC tunneling.
- Administration of Kali, Ubuntu, Windows 2016, 2012 Servers, and Windows 8 & 10 clients.
- Troubleshoot connectivity issues with Active Directory, DHCP,DNS,TCPIP, BDP, & OSPF.
- Create technical documentation for infrastructure, leading to a 2-day reduction in onboarding new SOC analysts.
- Led technical guidance for junior team members locally and internationally.
- Established 30% cost savings by WAN optimization of newly installed Juniper devices.
- Acquired knowledge of deploying Symantec Data Loss Prevention to protect data.
Network Engineer
Comcast
03.2017 - 01.2018
- Optimized network performance by swiftly troubleshooting and resolving issues to minimize downtime.
- Monitor network performance and capacity in a proactive manner to anticipate and prevent potential issues.
- Setup change management request for remote site deployments of Juniper & Arista equipment.
- Create detailed Visio wiring configuration documentation for engineers and wiring vendors.
- Configure 10g, 40g, & 100g uplinks for network capacity upgrades.
- Managed Software-Defined WAN networking solutions for multiple sites.
- Troubleshot fiber plant connectivity issues for Cisco, Juniper & Arista hardware, ensuring consistent network availability.
Education
ACE1 - Network Data Center
Arista Certified Engineer
08-2026
A.A - Computer Sciences
University of Maryland
US Air Force Career Development
University of The Air Foce
NSE 4 - Network Security Professional
FORTINET
CCNA 210-250 - Cyber Ops
Cisco
CCNA 640-802 - Cisco Certified Network Associate
Cisco
CCA-V - Citrix Systems Administrator
Citrix
MCP - Microsoft Windows Server, XP, TCP IP Certified Professional
Microsoft
Skills
- Router and switch configuration
- Firewall configuration
- Security implementation
- Network design
- Wireless network design
- Cloud environment deployment
- Network troubleshooting
- Disaster recovery solutions
- Network performance optimization
Timeline
Network Engineer
Southeast Georgia Health Systems
04.2025 - Current
Network Engineer
Immanuel Tech
02.2019 - 04.2025
Lab Tech Engineer
Immanuel Tech
01.2018 - 02.2019
Network Engineer
Comcast
03.2017 - 01.2018
ACE1 - Network Data Center
Arista Certified Engineer
A.A - Computer Sciences
University of Maryland
US Air Force Career Development
University of The Air Foce
NSE 4 - Network Security Professional
FORTINET
CCNA 210-250 - Cyber Ops
Cisco
CCNA 640-802 - Cisco Certified Network Associate
Cisco
CCA-V - Citrix Systems Administrator
Citrix
MCP - Microsoft Windows Server, XP, TCP IP Certified Professional
Microsoft