Summary
Overview
Work History
Skills
Accomplishments
Certification
Languages
Accomplishments
Timeline
Generic

Allan Gomez Abarca

San José, Pavas.

Summary

10+ Years demonstrated experience in Cisco Wired/Wireless LAN/WAN.

10+ Years demonstrated experience in diversified areas of Network communications.

10+ Years of experience in Telecommunications, Technical Support, Project management, and Network Operations.

10+ Extensive knowledge of Systems administrator Linux, Windows Engineer, Network Engineer, Security Engineer and Technical Lead and manager.

Overview

10
10
years of professional experience
1
1
Certification

Work History

Tecnical Consulting Engineer

Foundever Cisco Project
02.2025 - Current
  • Lead and coordinate SD-WAN cutover activities with customers and providers, including scheduling onsite implementations, conducting pre/post-checks, and ensuring successful failover and failback validation with new public IP assignments.
  • Configure and support SD-WAN and firewall environments (Cisco Meraki, Versa SD-WAN), including provisioning WAN links, validating connectivity, and troubleshooting end-to-end traffic flows.
  • Implement firewall rule changes, port openings, and subnet configurations based on customer requirements through ServiceNow change management, ensuring proper scheduling, risk mitigation, and validation.
  • Perform network readiness checks, including VLAN configuration, port assignments, and static routing, to support successful deployment of firewall and SD-WAN changes.
  • Support enterprise customers such as Gilead and Amgen, primarily in switching and network operations, including:Port configuration and activation
    Device decommissioning
    Port-channel and vPC configuration (Cisco Nexus)
  • Troubleshoot network issues by performing MAC address tracking, analyzing network diagrams, and identifying endpoint connectivity paths across campus environments.
  • Manage and monitor network infrastructure using tools such as Cisco DNA Center (DNAC), Syslog, and SNMP, ensuring visibility and proactive troubleshooting.
  • Execute all changes via ServiceNow, including change creation, scheduling (often after business hours), implementation, validation (pre/post-checks), and customer confirmation before closure.
  • Maintain strong customer communication, providing real-time updates during implementations and ensuring successful delivery of network changes.

Technologies: Cisco Catalyst 9500, Cisco Nexus (vPC), Cisco WLC 9000, Cisco Meraki, Versa SD-WAN, Cisco DNA Center (DNAC), SNMP, Syslog, ServiceNow

Network Engineer

Lightspeed Tech Development
10.2024 - 02.2025
  • Managed and resolved Wi-Fi network issues using Fortinet access points, including configuration, upgrades, and performance optimization.
  • Administered and troubleshot VPN connectivity, internet performance, and firewall operations on FortiGate devices.
  • Designed and maintained network monitoring solutions using PRTG, including creating probes, adding sensors for servers, services, switches, and firewalls, and organizing monitoring structures (folders/groups).
  • Proactively responded to network alerts (latency, packet loss, traffic spikes), coordinating and escalating with ISPs/providers to ensure service stability.
  • Supported enterprise network and voice infrastructure, including troubleshooting IP phones, internet connectivity, and working with PBX systems (VitalPBX) and SBC voice firewalls.
  • Performed switch lifecycle management, including hardware replacement, stack configuration, software upgrades, and production deployment.
  • Troubleshot complex environments using a wide range of tools and platforms, including Ivanti Connect Secure, Ansible (Linux automation), pfSense, Cisco and Juniper switches, Cisco Nexus core devices, Kibana, Elasticsearch, MariaDB, and VMware vSphere.

Network Engineer

Juniper Networks at Concentrix
02.2024 - 09.2024
  • Assisting customers to configure and troubleshooting eBGP iBGP, OSPF, IS-IS, MPLS, VPNs, Tunnels, Vlans Tags, platform such as MX10, MX40, MX80, QFX5120-48Y, QFX5130-32CD
  • Handling tickets for ISPs enterprises, RMAs of damage NICs and platforms.
  • Layer 1 to 7 OSI/TCP model analysis and troubleshooting.
  • LACP, HSRP, VRRP, STP, SNMP, IPsec configurations and troubleshooting.
  • Monitoring analysis J-WEB/Tunneling VPN/Firewalls stateful and stateless.

Network Administrator

Zircon International Inc
12.2022 - 01.2024
  • Implementation of load balancing with firewalls Fortinate Fortigate 50E, 200E, creating VPNs and segmentation for 3 ISPs.
  • Configurations, monitoring and troubleshooting of Mikrotik, Ubiquiti, Aruba HPE, Dell server, Cisco Catalyst switches, PBX voice server registration of phones, cabling, testing, IT stuff.
  • Configuration and troubleshooting of DNS, DHCP and Radius/AAA services.
  • Installation of Voice software PBX, Windows Server, SQL server in a VMware ESXi environment.

IP Engineer

Huawei
08.2022 - 12.2022
  • Implementation of QoS scripts on Nokia Alcatel to modify interprises bandwidth.
  • Configurations and troubleshooting on Juniper devices, BGP, LDP, MPLS.
  • Checking Fiber Optic cabling on Data Center and work with transivers TX/RX adapters.
  • Working close technicians, with NOC for monitoring purposes.
  • Working designing networks usign tools like Microsoft Visio, creating reports using Word, PowerPoint for montly uptime and bandowth of devices.

Senior Network Engineer

Cisco TAC/Foundever
09.2016 - 09.2022
  • Driving customers to upgrade, password recovery, database backups, restore backups, check integrity by MD5 on Linux and VMware systems.
  • Configuration and analysis of traffic on Cisco ASA firewalls, Firepower, Cisco routers & Switches using TCPdumps Linux CLI, Wireshark, or ethanalyser on Nexus OS for troubleshooting.
  • Configurations of protocols such as EIGRP, OSPF, IS-IS, BGP, LACP, HSRP, Vlans, and reproduction of issues to create alarms for customers, Syslogs, SNMP traps, Debugs, SNMP OIDs template.
  • Driving customers to create automation templates to upgrade and configure multiple protocols using Cisco Prime, Solarwinds, PRTG andPostman API tools.

Skills

  • Network Monitoring
  • Troubleshooting
  • Routing & Switching
  • Firewall/VPNs/ISP, IDP
  • TCP/UDP protocols
  • Problem-solving
  • Leadership/Trainer
  • Time Management
  • VMware/Hypervisor
  • SDWAN/Firewall
  • Unix/Linux/Scripting

Accomplishments

  • Promoted to Tier 3 Engineer after two years in Cisco TAC, following successful completion of the CCNP Routing and Switching certification and consistent high performance, including strong customer satisfaction (CSAT) scores.
  • Selected as a Technical Trainer at Foundever, where I developed and delivered training courses in English covering networking, Linux, and programming fundamentals for internal teams.

Certification

  • JNCIS-SP Service Provider Routing & Switching
  • JNCIA-Junos
  • CCNP Routing and Switching
  • LPIC-1 LINUX

Languages

English
Proficient
C2

Accomplishments

  • I was selected after 3 years working on Cisco TAC to create a Splunk project which I created 3 courses for the account, Networking, Linux and Programabilty.

Timeline

Tecnical Consulting Engineer

Foundever Cisco Project
02.2025 - Current

Network Engineer

Lightspeed Tech Development
10.2024 - 02.2025

Network Engineer

Juniper Networks at Concentrix
02.2024 - 09.2024

Network Administrator

Zircon International Inc
12.2022 - 01.2024

IP Engineer

Huawei
08.2022 - 12.2022

Senior Network Engineer

Cisco TAC/Foundever
09.2016 - 09.2022
Allan Gomez Abarca