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I am a self-driven, highly-analytical SYSTEM & NETWORK ADMINISTRATOR with 27 years of progressive experience helping companies improve organizational security and effectiveness. Adept at the design, architecture, development and maintenance of high-performing secure networks. My skills in the area of systems & network administration are complemented by my certifications as a Cisco Certified Network Associate, Certified Meraki Networking Associate, Cisco Small & Medium Business Engineer, HPE Aruba Certified Networking Associate. I am proficient in Windows 10/11, Windows Server 2008 - 2025, M365, Azure, AVD, Hyper-V, VMware, & some Linux.

Current Certifications: * CCENT ( Cisco Certified Network Technician ) * CCNA (Cisco Certified Network Admin (Routing & Switching)) * CCNP (Cisco Certified Network Professional (Routing & Switching)) * CCNA-SECURITY (Cisco Certified Network Security Admin) * SECURITY+ CE (CompTIA Certified SECURITY) * CEH (Certified Ethical Hacker) I am a Sr. Network and Security Engineer (SME) with expertise in Cisco Network Engineering and Cyber Security Engineering with year of I.T. experience managing private and government enterprise networks and Cyber security Network environments for large and small businesses . I have over 18+ years total experience as a lead Sr. network engineering SME as my foundation , and 9 yrs experience in Cyber Network Security infrastructure , design, configurations, troubleshooting, Cyber threat hunting. Also upgrading enterprise networks and security infrastructures for private companies , government organizations , including large and small business Networks and information systems. These skills include SME experience in Cisco Routing and Switching, ASA Firewalls, Palo Alto, Pfsense , VPNs, F5 Load balancer, WLAN, VoIP, and Cyber Security tools and SIEMS and Network Scanning, Windows Server, and WiFi networks.

I am a CCIE-certified Network Engineer with over 14 years of experience designing, upgrading, and supporting on premise and hybrid enterprise network infrastructure across healthcare, financial services, professional services, public sector, and managed services environments. My background is rooted in deep hands-on expertise across routing and switching, data center networking, WAN architecture, and advanced troubleshooting in complex, multi-vendor environments. I have worked extensively with platforms including Cisco, Palo Alto, Infoblox, Arista, and Juniper. Throughout my career, I have led large-scale remote and hybrid deployments, stabilized critical network environments, and improved uptime, performance, and scalability across both data centers and distributed enterprise systems. I bring a strong ability to partner cross-functionally with infrastructure, security, and operations teams to deliver resilient, high-performing network solutions. CORE COMPETENCIES: ★ Data Center Architecture ★ Routing & Switching ★ SD-WAN ★ Network Security ★ WAN Architecture ★ Infrastructure Modernization ★ Advanced Troubleshooting ★ Cisco Nexus & Catalyst ★ Palo Alto / Fortinet Firewalls ★ Infoblox ★ BGP / OSPF / EIGRP ★ MPLS / DIA ★ Network Automation (Ansible) ★ High Availability & Resiliency ★ Leaf & Spine / Core & Distribution & Access TOOLS: Cisco IOS | Cisco NX-OS | Cisco Nexus (9000/7000/5000/2000) | Cisco Catalyst | Cisco ACI | Arista EOS | Juniper MX/EX | ArubaOS | Nokia OS | Cisco Meraki | BGP | OSPF | EIGRP | vPC | STP | VDC | VXLAN | EVPN | NAT | QoS | Multicast | VRF | DMVPN | IPsec | HSRP | VRRP | GLBP | LACP | LLDP | CDP | Cisco Catalyst SD-WAN | Viptela SD-WAN | SilverPeak SD-WAN | MPLS | DIA | Metro Ethernet | Palo Alto | Fortinet | Cisco ASA | Cisco ISE | Cisco DNA | Wireshark | Ansible | TCL Shell | Python | SecureCRT | PuTTY | ServiceNow | Microsoft Teams | Zoom | Webex | Outlook | Visio CERTIFICATIONS: CCIE Routing & Switching #51201 | CCNP | CCDA | MCSE

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.

I modernize Cisco UC for mid-enterprise teams: CUCM 8–15 upgrades, Webex Calling migrations (Local Gateway/CUBE), dial-plan redesign, Unity & UCCX. 100% JSS, Top Rated, 90+ projects delivered with low-risk, zero-downtime cutovers. What you get • Webex Calling migrations (Local Gateway on CUBE, SRTP/TLS, E911/RedSky) • CUCM/Unity/UCCX upgrades & health checks (8.x→15.x) • CUBE/SBC setup for SIP trunks (TLS/SRTP, dial-plan/E.164) • Expressway MRA, Jabber → Webex app transitions, site cutovers Selected outcomes • 2,500-phone CUCM→Webex cutover, zero downtime, E911 verified • CUBE hardening + SIP normalization, eliminated 606/47 & one-way audio • CUCM, Unity Connection, UCCX upgrades with little to no down-time How I work 1. 30-min discovery + artifact review (config, call flows, carrier details) 2. Plan: risks, rollback, test matrix, success criteria 3. Implement in waves; validate CDR, media, and E911 Why me Top Rated, 100% JSS, 90+ Upwork jobs. 24+ yrs Cisco UC. CCNP Collaboration. Let’s start Send your current topology + target state. I’ll come back with the migration plan and a fixed-scope quote.

Meraki Certified Network Operator and Firewall Network engineer, I have many years setting up and configuring, VPN, SD-WAN and remote locations Meraki and Cisco Switches and networking. Fortinet Firewall setup and config with remote locations and firewall filtering. User VPN setup and configure. Firewall rules and filtering. Nimble SAN Storage server setup and config with VMWare Esxi 5.0-6.7 setup and config with ISCSI connectivity for system storage profiles. Switches, Cisco Aeronet, Meraki, Ubiquiti and Motorola wireless, Nuuo video monitoring and LifeSize video conferencing. Troubleshoot TCP/IP, DNS, WINS, DHCP and VPN. Support and maintain computing services including Windows Hyper-V and IBM iSeries and System X servers, VMWARE Esxi 5.5-6.5. Server, 2003-2019 Citrix XenApps, and Windows environment. Troubleshoot EDI transactions in Data Masons Vantage Point and Liaison AS2. Administer Office 365 mail and apps.