Hanzel Espinosa
Apopka,FL
Summary
Network Engineer with enterprise, service provider, and managed services experience, having led large-scale campus deployments, data center decommissions, and mission-critical network operations across banking and telecom environments. Known for strong ownership, adaptability, and accountability.
Overview
10
10
years of professional experience
1
1
Certification
Work History
Network Engineer II
Insight
Lake Mary, FL
04.2023 - 10.2025
- Led the deployment of BNY Mellon’s new Lake Mary technology hub, delivering a large-scale campus network across two 4-story buildings, supporting ~6,000 users, including 4 routers, 4 distribution switches, 128 access switches, and ~120 Aruba wireless access points.
- Configured and implemented Cisco routing and switching infrastructure using enterprise standards, while engineering site-specific IP addressing and VLAN segmentation to meet local design requirements.
- Decommissioned two enterprise data centers and more than 10 production sites, safely removing and migrating over 2,000 devices (routers, switches, firewalls, wireless controllers) with zero incidents or outages.
- Served as site lead for the Lake Mary deployment. Coordinated with cross-functional teams, vendors, and project managers to deliver the site on schedule and within scope.
Network Tech II
FirstLight Fiber
Albany, NY
09.2022 - 03.2023
- Operated in a service provider NOC environment, supporting enterprise and educational customers
- Diagnosed and resolved Layer 1–Layer 3 issues, including fiber faults, equipment failures, and routing-related outages.
- Served as an escalation and coordination point during major outages and service-impacting events.
Network Tech II
T-Mobile
Maitland, FL
06.2015 - 08.2022
- Provided operational support for managed customer networks, ensuring the availability of business-critical connectivity services.
- Diagnosed and resolved Layer 1/Layer 2 transport and access-layer issues, including circuit outages, handoff failures, and equipment faults.
- Managed incident tickets in a high-volume NOC environment, consistently meeting SLA requirements.
Education
Bachelor of Science - Information Technology
Seminole State College of Florida
Sanford, Florida, FL12-2020
Skills
- Network troubleshooting
- Incident management
- Ownership
- Leadership
- Delivery
- Accountability
- Adaptability
Certification
- Former CCNA (CSCO12814396) Network Associate Routing and Switching
Timeline
Network Engineer II
Insight
04.2023 - 10.2025
Network Tech II
FirstLight Fiber
09.2022 - 03.2023
Network Tech II
T-Mobile
06.2015 - 08.2022
Bachelor of Science - Information Technology
Seminole State College of Florida