Network Engineer, Network Administrator

TOBY LAM

San Diego, CA ***** 619-***-**** ****.***@*******.*** linkedIn.com/in/toby-t-lam/

Network Engineer

Motivated network professional with hands-on experience supporting LAN/WAN environments and implementing foundational security controls. Skilled with Cisco, Palo Alto, and SonicWall technologies, along with basic network automation tools. Seeking a network security role where I can strengthen security posture, improve network reliability, and contribute to a high-performing IT team.

Work Experience

IT Specialist Chosen Foods LLC San Diego, CA

July 2025 to present

• Manage Cisco switching, VLANs, and Unifi Wireless.

• Administer SonicWall firewalls, switches, and VPNs.

• Perform firmware upgrade, configuration audits, and lifecycle management.

• Harden network security configuration and standardize wireless network.

• Write and maintain IT documentation among collaboration with cross-functional team members.

• Assist with IT onboarding, training, and support end users via ServiceNow. Network Engineer, Contract LPL Financial San Diego, CA October 2023 to October 2024

• Expansion and upgrade of network infrastructure to support business needs.

• Ensure proper maintenance of network components, including Cisco ISE, DNA Center, and ACI.

• Conduct regular updates, configuration audits, and policy enforcement.

• Deploy and configure switches, Wireless LAN Controllers, and Access Points.

• Configure policies, optimize traffic routing, and troubleshoot connectivity issues.

• Reduced downtime, improved network stability, and faster incident response.

• Increased user satisfaction, improved self-service troubleshooting, and reduced IT workload. Network Administrator Novartis San Diego, CA

November 2015 to July 2023

• Managed enterprise network with complex access control requirements.

• Configured policies in Cisco ISE for network access control and utilized Prime for monitoring and device management.

• Enhanced network security posture and improved visibility into network performance.

• Deployed next generation firewall and VPN solutions to enhance security.

• Installed and configured firewalls, implemented VPN tunnels, and enforced access policies.

• Implemented VPN with multiple factors authentication that consisted of the AnyConnect and SAML.

• Strengthened client network security and ensured secure remote connectivity.

• Monitored and analyzed network performance using various tools.

• Deployed and maintained SolarWinds, Nagios, PRTG, and Wireshark for proactive issue detection.

• Increased network reliability and faster resolution of performance bottlenecks.

• Designed, configured, and deployed a Nginx-based load balancer, replacing Cisco ACE.

• Improved network performance, reduced licensing costs, and enhanced scalability.

• Collaborated with the infrastructure team to automate network operations.

• Integrated Chef for network automation, streamlining configuration deployment and management.

• Reduced manual configuration errors and improved deployment speed. IT Specialist Novartis San Diego, CA

May 2008 to October 2015

• Managed and troubleshot IT support tickets to maintain operational efficiency.

• Logged, prioritized, and resolved support requests, ensuring timely responses and escalations when necessary.

• Diagnosed and resolved software, hardware, and connectivity issues while guiding users through troubleshooting steps.

• Configured and deployed PCs for end-users.

• Updated systems with the latest security patches and applications.

• Managed software deployments and updates efficiently utilizing Altiris.

• Provided IT support across both platforms while managing a fast-paced workload.

• Resolved user issues related to system compatibility, application access, and command-line troubleshooting.

• Ensured seamless IT operations, improved system uptime, and strengthened cross-platform support capabilities. EDUCATION

Cybersecurity

UCSD, Division of Extended Studies San Diego, CA Computer and Information System Associate Degree Coursework CERTIFICATION & DEVELOPMENT

CompTIA Security+, February 2026

ISC2 Certified in Cybersecurity, July 2025

Google Cybersecurity Professional Certificate, June 2025 Cisco Certified Network Associate

SKILLS

• Cisco Routing and Switching

• Cisco Nexus and DNA Center

• Scalability and Requirements Assessments

• Diagnoses and Troubleshoot End to End Issues

• Firewall Configuration with Cisco ASA and Palo

Alto Network

• IPSec and AnyConnect VPN Client

• Conduct Root Cause Analysis

• Operating Systems Linux & Windows

• LAN Switching included VLANs, VPC, & HSRP

• Cisco Unified Communications Manager

• Decision-Making & Problem Solving

• Attention to Detail & Growth

• Written & Data Communication Skills

• Team Collaborates

• Scripting and Automation with Ansible and Chef

• Nutanix and VMWare

• AWS & Azure Cloud Computing

• Network Monitoring & Syslog with Splunk and

Nagios

• Network Security & MFA

• SDN Solutions

• Scalable and Secure Network Architectures

• Networking and Information Technology

• Automation Tools

• Integration & Migration

Miramar College San Diego, CA

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