Leonel H.

Sr Network & Security Engineer|Cisco Instructor|Network Troubleshootin

I am a Senior Network & Security Engineer with 20+ years of experience designing, implementing, and troubleshooting secure, high-availability networks for universities and enterprises across LATAM and the US. I specialize in Cisco-based infrastructures (routing, switching, wireless, VPNs, firewalls, SD-WAN), network performance optimization, and cybersecurity best practices. As a long-time Cisco Networking Academy Instructor and founder of NetProQuality Solutions (NPQ Solutions), I combine deep technical expertise with clear communication, structured documentation, and a strong focus on results. I'm an IEEE Senior Member. What can I help you with Network assessments & health checks (LAN/WAN/WLAN) Secure configuration of routers, switches & firewalls VPN design and troubleshooting (site-to-site, remote access) SD-WAN and migration support Wireless network planning & optimization Network segmentation, ACLs, policies & hardening Incident analysis & root cause identification Documentation (network diagrams, SOPs, runbooks) Training & mentoring for IT teams (CCNA/Networking fundamentals) Why clients choose me Proven expertise: Experience leading networking and security projects in academic and enterprise environments. Clear communication: I explain complex topics in simple, actionable terms (English & Spanish). Process & quality mindset: Strong background in IT governance, continuous improvement, and best practices. Reliable delivery: I take ownership of the problem and work until the solution is stable, secure, and documented. If you are looking for a trusted partner to stabilize, secure, or modernize your network — let’s talk.