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JMPJavier Marín Pérez Castellano

Javier Marín Pérez

Technical background, method and capabilities

I work on network projects from planning through documentation. I validate equipment, automate repetitive tasks and train colleagues as a technical point of reference without line-management responsibility.

Portrait of Javier Marín Pérez in a dark suit in a modern office.

Experience

Mar 2020 — present

Technical Engineering Coordinator

NETHITS IT SOLUTIONS SL · Albal · hybrid

  • End-to-end network projects: planning, configuration, review, documentation and technical report delivery.
  • Automation of repetitive tasks, improvement proposals and equipment validation through testing.
  • Technical point of reference and training for four technicians, without line management, prioritisation or work allocation.
  • Liaison with clients, suppliers and directors; cross-functional coordination with engineering, operations and support.

May 2019 — Dec 2019

Communications Manager B

Mercadona · Paterna · on site

  • Internal-client incident resolution across wireless networking, routing and switching with Cisco and Aruba.
  • Use of Jira and Nmap in a role without responsibility for coordinating people.

Professional scale

Capabilities

High level

  • LAN, WAN, WLAN and SD-WAN
  • Routing and switching
  • Enterprise Wi-Fi
  • Fibre optics and structured cabling
  • Firewalls and perimeter security
  • VPN and remote access
  • High availability and redundancy
  • Troubleshooting
  • Capacity and performance management
  • Diagrams, documentation and procedures

Intermediate level

  • Monitoring and observability
  • IP telephony and unified communications
  • Infrastructure automation
  • Virtualisation
  • Configurations and backups

Technical depth

  • Segmentation and routing

    • VLAN
    • LACP
    • VRF
    • NAT
    • subnetting
    • multicast

  • Perimeter security

    • FortiGate

  • Linux and containers

    • Debian
    • Docker container review

  • Microsoft environment

    • Windows Server
    • Active Directory

Technologies and tools

  • Cisco
  • Juniper
  • Ruckus
  • Zyxel
  • Aruba
  • Fortinet
  • Palo Alto
  • Huawei
  • MikroTik
  • Ekahau
  • Zabbix
  • PRTG
  • Jira
  • Visio
  • NetBox
  • n8n

Operating method

  • Jira

    I review the status and due dates of tickets and project tasks.

  • Checklists

    I verify tasks and projects before closing them.

  • Monitoring and reports

    I check services with Zabbix and PRTG and review monthly reports.

  • Procedures

    I document configurations and procedures so that solutions can be repeated.

Education

Sep 2014 — Jul 2018

Degree in Computer Engineering · Information Technologies

UPV

Final project: Performance analysis of the HTTP/2 protocol.

2018–2019

Postgraduate Master’s in Routing, Switching, Troubleshooting and Data Network Optimisation (CCNP)

University of Valencia

Languages

Spanish
Native
Valencian
High
English
B2 · daily technical use