Leonard Reyes

Senior Network & Systems Infrastructure Engineer with 12+ years of experience designing, securing, and optimizing enterprise and carrier‑grade networks. Skilled in routing, switching, VPNs, BGP, and firewall technologies, with proven success in incident resolution, SLA compliance, and disaster recovery. Adept at leading infrastructure projects, enforcing QMS/ISMS frameworks, and mentoring teams to deliver resilient, high‑availability environments.

Network Field Engineer at Ribbon Technologies (2023-01 – 2026-01)

Carrier-grade & Critical Infrastructure Projects

• Integrated Ribbon SBC monitoring with cloud dashboards, ensuring SLA compliance.
• Administered and optimized carrier‑grade IP/MPLS networks, ensuring SLA compliance.
• Led infrastructure upgrades and migrations, improving performance by 20%.
• Implemented advanced firewall policies and VPN solutions for secure remote access.
• Authored technical documentation and playbooks for monitoring and troubleshooting.
• Deployed full Solaris ecosystems from rack cabling to DB configuration.
• Implemented monitoring scripts and dashboards, improving system visibility.
• Collaborated with telecom engineers to ensure 99.9% SLA compliance.
• Mentored junior engineers on troubleshooting and monitoring best practices.

Azure Support Engineer (ASMS) at Microsoft Azure (2021-01 – 2023-01)

Cloud Technical Advisor support & Operations

• Managed Azure subscription governance and incident resolution for enterprise clients.
• Configured monitoring alerts and dashboards, reducing downtime by 15%.
• Implemented metric and trace analysis to diagnose performance issues in scalable applications, improving system reliability.
• Provided subscription administration and troubleshooting for enterprise clients.
• Implemented monitoring alerts and dashboards for Azure environments.
• Partnered with governance teams to align monitoring with compliance frameworks.
• Hardened cloud-hybrid infrastructures using Network Security Groups (NSG).

Aeronautical Network Operations at WNS Global Services (2018-01 – 2021-01)

Aeronautical Network Operations & Global Infrastructure Support

• Monitored global aviation infrastructure networks supporting enterprise-level operations.
• Coordinated high-priority incidents across international stakeholders.
• Identified connectivity patterns and anomalies impacting distributed systems.

Cisco Certified Network Associate in Networking – Universidad de Costa Rica

Cisco IT Essentials in Networking – Cisco Networking Academy (2013-06)

Introduction to Networks in Networking – UCR-Cisco Regional Networking Academy (2020-07 – 2020-09)

Switching, Routing, and Wireless Essentials in Networking – UCR-Cisco Regional Networking Academy (2020-10 – 2020-11)

Juniper Networks coursework in Networking – VLA academy (2015-01 – 2015-11)

C1 English in Languages – Centro Cultural Costarricense Norteamericano (2012-01 – 2012-12)

C1 Avanzado Portuguese in Languages – Centro Cultural Costarricense Norteamericano (2013-01 – 2013-11)