Fabián Alvarado Gómez
Network Engineer
Cartago
Summary
Results-driven Network Engineer with 15+ years of expertise deploying and maintaining LAN, WAN, WLAN, SD-WAN infrastructure. Provides reliable and vital connectivity for multi-site installations. Integrates fixed wireless, terrestrial and satellite-based solutions to create streamlined network infrastructure at enterprise scale. Trusted to develop fast and secure infrastructure plans for facilities and networking hubs. Provides secure connectivity for dispersed and cloud-based workforces through careful implementation of VPNs and user management tools. Builds large-scale, flexible networks designed to adapt to changing global business realities.
Overview
12
12
years of professional experience
5
5
years of post-secondary education
Work History
Network Design Engineer
Systal Technology Solutions
1 2019 - 4 2024
- Research and develop white papers for large program to refresh 35000+ network devices within current architecture design with recommended courses of actions including detailed information with risks and mitigations
- Developed comprehensive documentation for network architecture, ensuring efficient knowledge transfer among team members (HLD, LLD, architecture diagrams, logical, physical, rack elevation and traffic flows)
- Managing and Supporting all OOH network changes in accordance with change management process
- Working with Project Manager team members to be able to carry out network design, specification and configuration for devices that are ‘Refreshed’ i.e
- Replaced (ideally) before their End of Manufacturer Support date
- Infrastructure includes Cisco 2950, 3550, 3750, 6504, c9300, c9400, c9500 Series Switches, Cisco 3825, 3845, 7204, ISR 4300, ISR 4400, ASR 1000 Series Routers, Cisco 5508, 5516, 5545 Series ASA, Cisco 2110, 2120, 2130, 2140, 4100 Series Firepower, Cisco AIR-CT3504, AIR-CT5520 Series WLCL, Cisco AIR -AP2802, Palo Alto Checkpoint Firewalls.
- Mentored junior engineers, sharing best practices for effective network design and fostering collaborative team environment
Network Deployment Engineer
NCS Global Ltd.
10.2017 - 01.2019
- Perform network deployment and changes according to change framework of the O2 Wifi/Enterprise network
- Support on-site engineers and the creation of new procedures and technical documentation
- Incident’s troubleshooting with BGP, EIGRP, OSPF, Redistribution, VRF routing, Enterprise networking, L2TPV3 Tunnels/xconnects, VPN tunnels, Cisco Anyconnect.
- Linux error log checking, performance monitoring and tuning
- Configuring and troubleshooting multiple connectivity options like ADSL/FTTC/FTTP/Ethernet/L2TPv3/L2TP.
- Developed custom scripts to automate repetitive tasks during deployments, saving time and reducing errors
- Managed installation, upgrade and deployment projects and provided on-site direction for network engineers
Implementation Network & Wireless Engineer
DataPhrame Ltd.– HoistGroup Inc. partner
London
01.2016 - 09.2017
- In-house configuration of network hardware for future on-site Wireless deployment (HP, Cisco layer 2/3 switches, Ruckus Smart/Zone Director, Ruckus and Cisco WiFi Access Points, Linux/pfSense Internet gateways)
- On-site and remote execution of change requests providing configuration support for meetings, conferences and event IT requirements
- Providing remote support for field engineers and clients
- Building detailed Network diagrams and documentation
- Optimized network functionality by conducting comprehensive active and predictive site surveys to identify potential issues and new designs (Ekaha Acrylic, TAMOS) survey tools.
Senior Network Engineer
Venus Business Communications (ISP)
London
02.2016 - 07.2016
- Development projects within PPDIOO life cycle, as capacity link and switch upgrades (with traffic engineering used to minimize impact) to wholistic security policy development, testing, deployment and validation.
- Managed purchasing and installation of networking equipment such as core routers and switches like Cisco, Juniper, Brocade, Zyxel and Mikrotik routers and switches on company's MAN Network.
- Architected high-availability networks incorporating redundancy at all levels for seamless failover during outages or maintenance events.
- Administering & designing IP routes, IP subnets, VLANs, HSRP, VRRP, BGP, OSPF, MPLS, Netflow, network capacity planning and IP transit interconnections with other ISPs.
- Rack cable management and installation of equipment in Datacenter and Telephone Exchanges.
- Supported data center power and cooling infrastructure and consistently applied critical facility operational best practices.
Network Engineer
Nextel Engineering. (TIWS)
10.2012 - 11.2014
- Special Projects: Deployment of network equipment to customers within framework TGSOL 'Special Projects', leading, coordinating and interacting with different suppliers of equipment installation and various housing where equipment is installed
- Interconnections with different ISPs: Implementation of interconnections and gateways with third-party operators, coordinating projects for installation of new interconnections. Once established both in network and in systems, old or obsolete client links were migrated to new ones.
- Migration of all standard services (VPN MPLS, STI (Service Transit Internet), Point to Point, channeled, E1s, VC12 x-connects, T1, E3, SDH, Ethernet, TDM ...) within backbone of Telefónica
- Removing equipment: Leading and coordinating actions to move all customer services for low equipment TGSOL into backbone network
- Led meetings with departmental managers to review project status, propose changes and draft action plans.
Network Specialist
Samtel Group (TIWS)
05.2010 - 11.2012
- International Networks Operator at Tier 1 Telefonica International ISP customers networks
- Diagnosis and troubleshooting of large enterprise networks, continuously working with VPN services, MPLS VPN network traffic, GBS, ATM, Frame Relay, xDSL, Multilink PPP, GLAN, Metro Ethernet ( EVC, VPLS&VPWS), IPSec, IPX, VoIP traffic, OSPF, RIP, MeBGP, EIGRP and ISIS
- Support infrastructure of UC Video & Telepresence solutions and services: CTS 1000&3000 (Codecs, projectors, cameras, LEDs, web booking, IP-Phones), Call Managers, CMCU, VCS Expressway, VCS Control, Telepresence Server
- Working software: SIGMA, MS Office, HP OpenView, NETCOOL, Infovista, NSIM, Webtop, HGC, SecureCRT, Microsoft Visio, Linux, Windows, Lotus Notes, etc
- Familiar with following vendor equipments: routers cisco (series 12000,7000, 2800, 2600), Juniper (series M and T), routers Teldat, Cisco Call Manager, Alcatel OCX, Riverstone, Nortel Passport (7480/6480,7440/6440,6420, 15000), SUN Stations, ASA Firewalls , PIX, switches cisco (series CAT 6800, 6500, 4500E, 3850).
Network Consulting Engineer
Digitel S.A
06.2012 - 03.2012
- Project 2 months of access technologies related to 2G CORE network at Jazztel ISP
- Migration of all ISP Jazztel access routers from IPv4 to IPv6
- Review services and routes before migration, then upgrade IOS, after implementation of new IPv6 configurations and their routing protocols such as OSPFv3, MP-BGP, BGP communities, LDP, MPLS VPN, finally review appropriate learning routes and check correct operation of customers with new IPv6 services
- Equipment: routers Cisco, Juniper, Huawei & switches devices.
Network Operator
Sms Group.
05.2009 - 05.2010
- Proactive control of communication network through events and alarms tools
- Planning and executing with client Project Manager installation of telecom equipment in different countries
- Manage and monitor client’s network with over 500 sites.
- Revamped outdated processes through automation, streamlining network operations and reducing manual intervention in routine tasks
- Developed comprehensive documentation on network topology, policies, procedures, and asset inventory for easy reference by team members or external auditors
- Enhanced system security, implementing robust firewall configurations and access controls
National Networks Operator
Arcitel Iberica s.a
05.2007 - 02.2009
- Maintenance and management of plant over 16,000 equipment where vast majority of them were CISCO equipment ( up 7500RSP 8XX series), Juniper (Series MJ), Riverstone, Teldat, Nortel (Contivity, .itch, Shasta), ATM switches, Light Steam 1010
- Service Management with IPSec tunnel terminators, VPN3000 Cisco Contivity
- Management of mass incidents detected in service and Tshoot the issue in the architecture of Telefónica Data Network (Red Nuria - RUMBA, Red ONE, Transit ) and Telefonica Spain (Red NIMBA, Alejandra Red, Red GigaADSL ) with related services like: FR, Fibre, ATM, ADSL, ISDN, IPSec, PPP, MPLS, routing protocols, etc.
- Conducted comprehensive training for new operators, enhancing team skills and performance
- Led cross-functional team project that improved communication between departments, enhancing overall operational efficiency
Education
Implementing and Operating Cisco Enterprise Network Core Technologies -
LSA Training
London, UKImplementing Cisco SD-WAN Solutions - undefined
LSA Training
London, UKSome College (No Degree) - ILO WD 1024 Python For Network Engineers + DEVASC
Pynetlabs
Online 01.2020 - 03.2020
NDG LINUX ESSENTIALS - undefined
CBT Nuggets
CISCO CERTIFIED NETWORK PROFESSIONAL (CCNP - R&S) - undefined
LSA Training
London, UKCERTIFICATION ITIL FOUNDATIONS V3. - undefined
Gadesoft
CISCO CERTIFIED NETWORK ASSOCIATE (CCNA) - undefined
Cenec
Madrid, SpainCERTIFICATE OF HIGHER EDUCATION (HNC) OF TELECOMMUNICATIONS NETWORKS - undefined
Instituto Tecnológico de Costa Rica
Cartago, Costa RicaGENERAL CERTIFICATE OF EDUCATION (GCE)¹ -
Colegio Vicecnte Lachner Sandoval
Cartago, Costa Rica 02.2000 - 05.2005
Skills
Data Center Networking
Network Automation Tools
Network Security Implementation
Network architecture design
Firewall Configuration and Management
Cisco Certified Network Professional
Software-Defined Networking
Virtualization Technologies Proficiency
Networking and routing protocol expertise
Virtual private networks
LAN switching technologies
Enterprise WiFi management
SD-WAN Network
Skillsandactivities
Implement appropriate technologies to build a scalable network. Construction of networks such as 'campus' using technology 'multilayer switching.' Improve traffic flow data, security, redundancy and performance LANs or WANs campus-based routers and switches, and remote network access. Create and develop global intranets. Resolution of incidents in environments based on Cisco routers and switches for multi-protocol services and hosts. WAN: Frame Relay, PPP, ISDN, ATM, FR, xDSL, SDH, HDLC, VPN, MPLS VPN, DMVPN, P-to-P circuits, SD-WAN, etc. LAN: VTP, DTP, RPVST+, MST, HSRP, VRRP, GLBP, 802.1Q, LACP, PAgP, CEF, DHCP, PoE, 802,1X, DHCP Snooping, DAI, PortSecurity, VACL, AAA, Radius, TACACS+, integration of VoIP (VLAN VoIP, QoS, and Wireless into LAN switching, Multicast, Chassis redundancy software, NSF, DNA Center. WIFI: WLC, LAP, APs, LWAPP. Quality of Service (QoS): Auto-QoS, 802.1p, DSCP, LLQ, WRED, etc. Networking: MPLS/VPLS technologies and advanced applications, ATM, VPN, VoIP, IPSec, multicast,… VoIP: UC Videos & Telepresence, CUCM / CUCME / Unity, IPhones, CTS 3000, SIP, RTP, QoS, PBX, etc Routing: OSPF, EIGRP, RIP, IS-IS, MP-BGP, IPv6, MPLS, LDP, LISP.
Backgroundcourses
- Sept 2008, IBM, Madrid, Spain, Wireless Network Security, 40 hours
- Jun 2008, IBM, Madrid, Spain, IP Telephony, 40 hours
- Mar 2009, IBM, Madrid, Spain, Structured Cabling, 10 hours
- Feb 2010, Macersica S.A, Madrid, Spain, Basic course of Linux, 60 hours
Languages
English
Advanced (C1)
Timeline
Some College (No Degree) - ILO WD 1024 Python For Network Engineers + DEVASC
Pynetlabs
01.2020 - 03.2020
Network Deployment Engineer
NCS Global Ltd.
10.2017 - 01.2019
Senior Network Engineer
Venus Business Communications (ISP)
02.2016 - 07.2016
Implementation Network & Wireless Engineer
DataPhrame Ltd.– HoistGroup Inc. partner
01.2016 - 09.2017
Network Engineer
Nextel Engineering. (TIWS)
10.2012 - 11.2014
Network Consulting Engineer
Digitel S.A
06.2012 - 03.2012
Network Specialist
Samtel Group (TIWS)
05.2010 - 11.2012
Network Operator
Sms Group.
05.2009 - 05.2010
National Networks Operator
Arcitel Iberica s.a
05.2007 - 02.2009
GENERAL CERTIFICATE OF EDUCATION (GCE)¹ -
Colegio Vicecnte Lachner Sandoval
02.2000 - 05.2005
Network Design Engineer
Systal Technology Solutions
1 2019 - 4 2024
Implementing and Operating Cisco Enterprise Network Core Technologies -
LSA Training
Implementing Cisco SD-WAN Solutions - undefined
LSA Training
NDG LINUX ESSENTIALS - undefined
CBT Nuggets
CISCO CERTIFIED NETWORK PROFESSIONAL (CCNP - R&S) - undefined
LSA Training
CERTIFICATION ITIL FOUNDATIONS V3. - undefined
Gadesoft
CISCO CERTIFIED NETWORK ASSOCIATE (CCNA) - undefined
Cenec
CERTIFICATE OF HIGHER EDUCATION (HNC) OF TELECOMMUNICATIONS NETWORKS - undefined
Instituto Tecnológico de Costa Rica