Hi, I'm Sergio

Backend & Full Stack Developer

5+ years building software and solving complex VoIP and contact center problems from Montevideo, Uruguay.

Experience

Aug 2026 → present
Virtualtech
Customer Support Engineer
Tier 2 support for VoIP and contact center systems built on Asterisk and uContact, covering telephony, dialplans and MySQL, and the point of contact for escalations with Development and QA.
Sep 2025 → Jun 2026
Nortal
Development Support & QA Engineer
Investigated and resolved production issues across environments with root-cause analysis, and contributed backend features and fixes within low-code ecosystems.
Jun 2022 → Jul 2025
Net2Phone
Backend & Full-Stack Developer
Built backend services and customer-facing features for uContact, serving 5,000+ active users. Architected the Gmail OAuth 2.0 integration adopted by 100+ client organizations, and reviewed 50+ pull requests a month in a team of 16.
Jul 2020 → Jun 2022
Net2Phone
Tier 2 Support Engineer Lead
Led a team of 5 engineers across incident management and SLA compliance, automated operations with SQL, Shell and JavaScript, and designed onboarding and technical training.
Jul 2019 → Jun 2020
Isbel
Modem Technician
Diagnosed, repaired and refurbished networking equipment, keeping service running and hardware in use.

in production

SaaS platform for weekly food ordering at cafés.

in production

Online menu for restaurants.

Complete platform to follow projects, manage tickets and keep client data in one place.

Football fans pick their team's starting eleven before each match and see how the crowd's choice compares with the coach's.