Overview
Work History
Education
Skills
Certification
Affiliations
Training
Timeline
Generic
Ronnwill cerrillo sia

Ronnwill cerrillo sia

Overview

23
23
years of professional experience
1
1
Certification

Work History

Network Engineer IV Tier 3

Telus Digital
10.2023 - Current
  • Designed and implemented network infrastructure to enhance system reliability.
  • Regularly monitor network performance, identifying and resolving issues, and ensuring optimal functionality.
  • Lead SME for technologies such as Meraki , GCP, Palo Alto, and Routing.
  • Supervise NOC engineers and Led troubleshooting efforts for complex network issues, ensuring minimal downtime.
  • Designed and implemented network infrastructure to enhance system reliability.
  • Developed and maintained comprehensive documentation for network configurations and procedures.
  • Mentored junior engineers, fostering skill development and knowledge sharing within the team.
  • Managed vendor relationships to ensure alignment with organizational networking goals and standards.

Network Analyst Tier 3

Intrado Technology
07.2016 - 10.2023
  • Involve with the design, implementation, and operations of Intrado’s infrastructure.
  • Supervise L1 and L2 engineers in the resolution of complex day-to-day network problems in a timely manner
  • Audit, monitor, and maintain network devices such as Cisco routers, switches, firewalls, and F5 load balancers to meet standard configuration and software.
  • Collaborate with Infosec to properly review the access policy to be implemented within the network.

Engineer – NOC

Verizon
03.2009 - 07.2016
  • Involve in a wide range of activities surrounding the maintenance and troubleshooting of Verizon Business-managed customer networks
  • Troubleshoot, monitor, and ensure operating viability of LAN, WAN, and circuits within SLA.
  • Adhere to and champion the ITIL-based principles established for problem, change, and asset management.

Sr. Product Support Specialist

Concentrix
05.2005 - 03.2009
  • Provide support for computer-related issues and network devices
  • Provide second-level technical support for Linksys SMB networking devices

Product Support Representative

Concentrix
11.2002 - 05.2005
  • Provide technical support for Linksys Routers, Switches, Access Points, and adapters (wired/wireless).

Education

Master of Science - IT

Rizal Technological University
12-2025

Bachelor of Science - Computer Science

Adamson University

Skills

  • Cisco Routers, Switches, Nexus, Wireless Controller, Access Point, firewall ASA/FTD, F5 Load balancer (LTM/GTM), AVI load balancer, Juniper, Cloudflare, Palo Alto, ISE, Meraki, AWS, GCP
  • Experience with LAN, WAN, TCP/IP, VLAN, HSRP, VPN, OSPF, EIGRP, BGP, MPLS, Load balancing, Firewall, AWS, GCP
  • Experience with Splunk, Service Now, Wireshark, Solarwind, Logic Monitor
  • Experience with Circuits DS1, DS3, T1 and T3 and Telecom infrastructure

Certification

  • Cisco Certified Network Professional – CCNP
  • Cisco Certified Network Associate – CCNA
  • Palo Alto Networks Certified Network Security Administrator (PCNSA)
  • Certified in Cybersecurity (ISC2 - CC)
  • AWS Certified Cloud Practitioner
  • ITIL v3
  • ITIL v3 RCV (Release, Control, and Validation)
  • ITIL v3 OSA (Operational Support and Analysis)

Affiliations

  • ISACA - Member
  • ISC2 - Member

Training

  • Certified Information Systems Auditor (CISA) ( ISACA June 24 - July 29, 2023)
  • AWS Partner: Security Governance at Scale - Technical (June 23, 2023)
  • AWS Partner: Accreditation (AWS February 14, 2023)
  • F5 PH K8s Cloud-Native Application Services Bootcamp (April 25-26, 2023)
  • Troubleshooting BIG-IP v14 (F5 March 27, 2020)
  • Configuring BIG-IP LTM v14 (F5 Sept 27, 2019)
  • Implementing Cisco Storage Networking Solutions ( Dec.2 - 8 2012)
  • Configuring BGP on Cisco Routers ( Feb.6 - 11,2012)
  • Implementing Cisco Quality of Service ( Aug.7 - Sept.4, 2011)
  • Implementing Cisco MPLS ( July 2 - 30, 2011)
  • ITILv3 Foundation (Fastlane June 7-29,2010)

Timeline

Network Engineer IV Tier 3

Telus Digital
10.2023 - Current

Network Analyst Tier 3

Intrado Technology
07.2016 - 10.2023

Engineer – NOC

Verizon
03.2009 - 07.2016

Sr. Product Support Specialist

Concentrix
05.2005 - 03.2009

Product Support Representative

Concentrix
11.2002 - 05.2005

Master of Science - IT

Rizal Technological University

Bachelor of Science - Computer Science

Adamson University

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Ronnwill cerrillo sia