César Mejía Cruz

Network & Cybersecurity Engineer

Computer Engineer with over 3 years of hands-on experience in enterprise networking, cybersecurity, and technical support, specializing in FortiGate, advanced routing protocols (BGP, VPN, and VPLS), and incident management using platforms such as Zendesk. Proven track record supporting AAA corporate clients and contributing to critical incident responses, helping achieve a 30% reduction in MTTR. Played a key role in network infrastructure migrations and modernization efforts, as well as in implementing significant perimeter security enhancements for clients. Skilled in incident validation, with a strong commitment to operational excellence and continuous learning. Proud to be part of one of Mexico’s leading telecommunications companies.

Education

• Bachelor’s in Computer Engineering, Instituto Politécnico Nacional (Aug 2012 – Jun 2022)
• Certifications:
  • Fortinet FortiGate 7.4 Administrator
  • Fortinet Certified Associate & Fundamentals
  • EF SET English Certificate C1 Advanced
  • JavaScript: Advanced Web Knowledge
  • Programming Logic
  • Git and GitHub
  • Microsoft Office Suite

Professional Experience

• SR L1 Network Core & Backbone Operations, Talento MCM Business Tech-Co (Jun 2024 – Present)
  • Lead technical operations and support for AAA clients, ensuring 24/7 SLA compliance and swift incident resolution.
  • Configure, troubleshoot, and maintain backbone/core network infrastructure
  • Specialize in FortiGate firewalls, including advanced security policy configuration, SSL/IPsec VPN deployment.
  • Implementation and management of FortiGate SD-WAN solutions, high availability (HA) setup,traffic inspection, and integration with BGP and VPLS networks.
  • Configured and managed FortiGate integrations with AWS and GCP to ensure secure and optimized connectivity between on-premises networks and the cloud.
  • Validate and coordinate incident response at the national network level to ensure business continuity.
  • Manage hardware refresh projects, including large-scale device replacements and migrations.
  
  
• SR ENGINEER NETWORK OPERATION CENTER L2, MCM Telecom (Jul 2023 – Jun 2024)
  • Coordinated support for critical network events, acting as escalation point for advanced technical incidents.
  • Optimized team workflows, resulting in faster resolution times and improved service quality.
  • Performed complex configuration changes for advanced network services and client requirements.
  
  
• JR ENGINEER NETWORK OPERATION CENTER L2, MCM Telecom (Jun 2023 – Jul 2023)
  • Managed escalated tickets for enterprise data connectivity through Zendesk, diagnosing both physical and logical faults.
  • Delivered high-quality support for enterprise clients, enhancing customer satisfaction.
  
  
• ENGINEER NETWORK OPERATION CENTER L2, MCM Telecom (Sep 2022 – May 2023)
  • Provided tier 2 technical support for corporate clients via ticketing platforms, primarily Zendesk.
  • Monitored, maintained, and diagnosed complex networking and security incidents.
  • Administered VPN access and implemented network security policies.
  
  
• Intern – Net Prov Voice, MCM Telecom (Jul 2022 – Sep 2022)
  • Provisioned voice and SMS services for enterprise clients.
  • Supported deployment and operation of telecommunication services.

Languages

• Spanish: Native
• English: Advanced (C1, EF SET Certified)

Skills

• Ticketing Platforms: Advanced use of Zendesk for incident management, escalation, and client communication
• Network Security: FortiGate (hardening, log analysis, incident validation, VPN configuration, SD-WAN), Secure Network Design, BGP, VPLS, cloud integrations with AWS and GCP.
• Networking: BGP, VPLS, Routing & Switching (Cisco, Huawei, Extreme)
• Incident Management: AAA client support, Backbone/core validation, 24/7 operational support
• Operating Systems: Advanced use of Linux (Debian-based distributions) for system administration, networking, and troubleshooting
• Scripting & Tools: Git, JavaScript, Office Suite