Carlos Daniel Hernández Ramos

Network and Telecommunications Engineer with experience in ISP infrastructure, VoIP platforms, Linux administration, and perimeter security solutions. Specialized in MikroTik, Asterisk/FreePBX, OSPF/BGP routing, VPN technologies, and high-availability network environments. Experienced in leading NOC operations, troubleshooting critical network and VoIP incidents, carrier integrations, and optimizing telecommunications services.

Focused on operational continuity, SLA compliance, infrastructure security, and network performance improvement in enterprise and ISP environments.

NOC Coordinator | Senior Network & VoIP Engineer - CITRO TELECOM

(2023-10)

• Coordinated NOC team operations, task assignment, and SLA/KPI monitoring.
• Managed escalation and resolution of critical network, VoIP, and security incidents.
• Planned corrective and preventive maintenance activities for service continuity.
• Coordinated with carriers, cloud providers, and third-party vendors.
• Administered IP telephony platforms based on Asterisk and FreePBX.
• Configured IVR systems, call queues, voicemail, SIP trunks, inbound/outbound routing, and advanced dial plans.
• Integrated national and international PSTN providers with redundancy solutions.
• Managed Class 4 and Class 5 softswitches (Sippy, Kilmisoft).
• Implemented Microsoft Teams Direct Routing through SBC integration.
• Performed advanced SIP troubleshooting involving NAT, jitter, latency, RTP, and packet loss analysis.
• Administered perimeter security solutions and firewall policies.
• Implemented VLAN segmentation, VPN IPsec tunnels, SD-WAN, and failover solutions.
• Configured QoS, IPS, Anti-DDoS protections, and traffic prioritization.
• Managed MikroTik environments including OSPF, IPIP, EOIP, PCC, ECMP, Firewall, NAT, and Mangle.
• Applied routing optimization and security hardening practices.
• Administered Linux servers (Rocky Linux, Debian, Ubuntu Server).
• Managed DNS services (Bind9), web proxy solutions (NGINX, Squid), SSL certificates, and mail platforms.
• Managed Proxmox virtualization clusters, backups, and high-availability environments.
• Automated administrative tasks using Bash scripting.
• Created technical documentation and network diagrams.
• Generated executive reports and SLA tracking reports.
• Managed operational information through Odoo CRM.
• Delivered technical training to NOC staff and customers.
• Led migration and porting processes of over 1,500 DID numbers with minimal service disruption.
• Participated in VoIP traffic optimization and routing integration with carriers.
• Improved service stability through routing and network policy optimization.

Administrador de Networking - WIKINET SA DE CV.

(2021-04 - 2023-09)

• Managed wireless network infrastructure for enterprise and residential customers.
• Configured microwave links using 2GHz, 5GHz, and 6GHz technologies.
• Implemented VPN solutions (L2TP, OpenVPN, PPTP) for CCTV monitoring center integration.
• Deployed and administered VoIP systems based on Asterisk, Issabel, and FreePBX.
• Configured SIP trunks, extensions, IVR systems, ring groups, and routing policies.
• Integrated internet services and router aggregation for transport network stability.
• Implemented DNS-based web filtering and network access policies.

Soporte Técnico - SYSCOM HUEJUTLA

(2019-01 - 2019-04)

• Diagnosed hardware and software issues on desktop and laptop computers.
• Installed antivirus solutions and performed data backup operations.
• Replaced hardware components including RAM, HDDs, keyboards, and displays.
• Developed a web-based point-of-sale application.
• Managed MySQL and SQL Server databases.

Bachelor's Degree - Information Technology Engineering - Universidad Tecnología de la Huasteca Hidalguense (2019-09 - 2021-04)

Associate Degree - Information Technology & Communications - Universidad Tecnología de la Huasteca Hidalguense (2017-09 - 2019-08)