Senior Network Architect / Network Engineer

Jonathan Lewis Senior Network Architect / Network Engineer

Carlsbad, CA *********@*****.*** 415-***-**** linkedin.com/in/jonathan-lewis-network

Professional Summary

Senior Network Architect / Engineer with 25+ years of experience designing, implementing, and supporting enterprise infrastructure across global, multi-data center environments. Expert in routing, switching, and network security (BGP, OSPF, firewalls, high availability). Proven track record delivering large-scale network builds, refreshes, and migrations in highly regulated environments. Experience with hybrid cloud (AWS & Azure), with AWS certification in progress.

Core Competencies

Network Architecture:

Enterprise LAN/WAN, Data Center Design, High Availability, Infrastructure Modernization, Network Segmentation

Routing & Switching:

BGP, OSPF, MPLS, VLANs, STP, VPC, QoS

Network Security:

Firewall Architecture (Check Point 5200, 6200, Gaia R79-R81.2, Palo Alto PA-5220/7050, Cisco ASA), Firewall Upgrades & Migrations, VPN (IPSec, AnyConnect, GlobalProtect), Zero Trust

Cloud & Hybrid:

AWS (VPC, EC2, Networking), Microsoft Azure (Networking, Firewall, Routing), Hybrid Connectivity, Site-to-Site VPN

Automation & Tools:

Ansible, Splunk, NetBrain, SolarWinds, PRTG, Wireshark

Data Center Platforms:

Cisco Nexus (7K/9K), Catalyst, ASR Series, Dell PowerStore, Hyper-V, VMware

Leadership:

Architecture Design, Technical Leadership, Project Delivery, Cross-Team Coordination

Professional Experience

Thomson Reuters Remote

Senior Network & Security Architect / Engineer (Contract)

April 2025 – Present

Lead architect and primary network owner across four data centers, responsible for design, implementation, and operational stability of enterprise network and security infrastructure.

Designed and deployed multi-ISP BGP architecture with dual providers per data center, ensuring high availability and resilient routing

Engineered OSPF routing between data centers over redundant point-to-point links, improving failover and minimizing downtime

Owned and managed multi-vendor firewall environments (Check Point & Palo Alto), including network edge redesign and security optimization

Performed Check Point firewall upgrades (Gaia R79 to R81.2), improving security posture and maintaining vendor compliance

Migrated firewall uplinks from single connections to aggregated (LACP) and upgraded from 1Gb to 10Gb, increasing throughput and redundancy

Led full lifecycle data center switching refresh (100+ switches across 3 DCs), including design, configuration, deployment, and migration

Designed and deployed VLAN architecture across the environment, supporting scalability and segmentation

Coordinated and executed server migrations with minimal downtime across multiple teams

Designed and maintained site-to-site VPN connectivity to AWS, supporting hybrid cloud integration

Deployed PRTG monitoring, improving network visibility and alerting

Supported Hyper-V migration and deployment of Dell PowerStore SAN

Acted as primary escalation point for complex routing, firewall, and connectivity issues

Managed daily network operations, including incident response, troubleshooting, and access control

Served as technical authority, driving architecture and implementation

General Electric Remote

Senior Network Engineer (Contract)

April 2023 – April 2025

Senior network engineer supporting a global enterprise environment across on-prem data centers and hybrid cloud (AWS & Azure), focused on network expansion, automation, and operational stability.

Implemented BGP routing updates across global multi-site WAN infrastructure to support onboarding of new business lines

Supported global hybrid network environment (on-prem, AWS & Azure), including deployment of routing, switching, and Palo Alto firewalls in Azure

Played key role in onboarding new networks, deploying routing, VLANs, and firewall configurations

Designed and deployed VLANs across enterprise switching infrastructure for segmentation and scalability

Engineered and maintained Cisco Catalyst and Nexus switching environments

Managed Palo Alto firewalls (PA-5220 & PA-7050), including policies, NAT, and VPN (GlobalProtect)

Automated network deployments using Ansible across routers, switches, and firewalls, improving efficiency and consistency

Executed production network changes supporting expansion and operations

Contributed to data center migration initiatives

Led and participated in high-severity incident response, restoring critical services

Utilized Splunk, NetBrain, and PRTG for monitoring and troubleshooting

Collaborated with global teams on infrastructure improvements and Zero Trust initiatives

University of San Francisco San Francisco, CA

Senior Network Architect (Contract)

April 2018 – April 2023

Lead network architect and technical authority for campus-wide infrastructure, responsible for design, implementation, and modernization of enterprise network and data center environments.

Designed and deployed Nexus 9500 data center core, replacing legacy infrastructure

Led enterprise switching refresh (300+ switches) from design through implementation

Designed and built full network infrastructure for new residential buildings (155+ units), including LAN, WiFi, cabling, MDF/IDF

Led large-scale wireless redesign (2000+ APs), improving performance, coverage, and reliability

Designed and deployed Palo Alto firewall environments from the ground up

Implemented Cisco ISE for secure network access and policy enforcement

Optimized BGP routing across multiple ISPs for improved traffic flow and redundancy

Integrated Splunk and NetBrain for enhanced monitoring, troubleshooting, and visibility

Managed network monitoring using PRTG, improving alerting and operational awareness

Implemented QoS for VoIP and critical applications across the campus network

Delivered multi-million dollar cost savings by eliminating unnecessary vendor licensing and optimizing hardware selection

Served as primary technical authority, leading architecture decisions and project execution

PayPal San Jose, CA

Team Lead – Senior Network Architect / Engineer (Contract)

Nov 2015 – Nov 2016

Led global network engineering teams responsible for enterprise infrastructure, governance, and large-scale network standardization across data centers and international sites.

Led two global network teams supporting enterprise infrastructure and operations

Served as final authority for all production network changes and configurations

Standardized configurations across 750+ network devices, improving consistency and stability

Managed global network infrastructure across data centers and international locations

Led hardware upgrade initiatives to improve scalability and performance

Drove governance, standards, and best practices across network operations

Coordinated infrastructure changes across multiple teams, ensuring high availability

Provided technical leadership and guidance to engineering teams

CoreLogic San Mateo, CA

Senior Network Architect (Contract)

Feb 2013 – Nov 2015

Lead architect for high-security, compliance-driven infrastructure supporting major financial institutions, responsible for design and implementation of mission-critical data center environments.

Designed dual data center architecture for credit processing systems

Engineered BGP across four ISPs to ensure high availability and network resilience

Implemented data center failover and disaster recovery solutions

Built and deployed infrastructure including Cisco Nexus, ASA firewalls, F5 load balancers, and out-of-band management networks

Designed secure IPSec VPN connectivity for business partners and external integrations

Managed multi-tenant security requirements across banking clients (e.g., Bank of America, Wells Fargo, Chase)

Deployed SolarWinds monitoring platform for network visibility and performance tracking

Delivered under high-pressure, mission-critical environments with strict compliance requirements

Earlier Experience

Senior Network Architect / Engineer Network Manager Team Lead

2001 – 2013

Companies include: CCIE Task Force (Team Lead), Layard Technologies (Network Manager), Friedman’s Jewelers (Network Supervisor), Knight Enterprises, Forever Young Dayton, Tech Israel

Delivered 300+ network projects across 200+ clients

Designed and implemented LAN/WAN, data center, VoIP, and VPN infrastructures

Led network engineering teams and end-to-end project delivery

Designed high-availability and secure network architectures

Supported large-scale enterprise and service provider environments

Provided full lifecycle design, deployment, and advanced troubleshooting

Certificates

CCIE (written, 2015,2016,2024)

CCNP - Cisco Certified Network Professional

CCNP – Cisco Certified Network Professional

CCNA – Cisco Certified Network Associate

MCSE – Microsoft Certified Systems Engineer

MCSA – Microsoft Certified Systems Administrator

AWS Certification – In Progress

Education

BEng, Hardware & Software Engineering

University of Coventry (UK Extension, Emek Hefer, Israel)

A.S., Cisco Internetworking

Seminole Community College, Lake Mary, FL

Languages

English (Fluent), Hebrew (Fluent), Spanish (Basic)

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