About Me
I'm a Software Engineer with 4+ years of experience building web products at scale at Mercado Libre. After an intentional sabbatical year dedicated to music and personal projects, I'm now returning to development with renewed energy — currently building Flag Pilot, a feature flag management system with Next.js 16, NestJS, PostgreSQL, and AWS.
My background combines a strong Frontend focus (React, TypeScript, Next.js, SSR micro-frontends) with hands-on experience in Backend (REST APIs with Node.js, Go, and Java), analytics (Looker, Tableau), and production infrastructure (DataDog, New Relic, CI/CD).
At Mercado Libre, I contributed to building marketing tools for sellers — catalog sync with Meta and TikTok, Ad creation — impacting thousands of merchants across Latin America. I also designed BI dashboards to measure feature adoption, managed production incidents during on-call rotations, and actively participated in architectural decisions.
When I'm not coding, I'm making music.
Experience
Mercado Libre
May 2021 – Dec 2024Software Engineer — Mar 2023 – Dec 2024
- Led technical design for seller marketing tools — catalog sync with Meta and TikTok, Ads creation
- Designed BI dashboards using Looker and Tableau to measure feature adoption and guide product decisions
- Managed production incidents during on-call rotations (DataDog, New Relic), coordinating cross-functional response
Development Analyst — May 2021 – Mar 2023
- Built SSR micro-frontends with headless CMS architecture (React + TypeScript), optimizing performance and SEO
- Contributed backend endpoints in Go and Java — learned independently to reduce backend team workload
- Mentored two senior engineers during onboarding, recognized as key factor in promotion to Software Engineer
Seico Technology
May 2020 – Aug 2020Frontend Developer
- Created a complete Design System using SCSS, BEM, and Atomic Design methodology
- Contributed to redesign and refactoring of the QualyFlight application
Projects
Flag Pilot
Feature flag management system with a real-time dashboard, client SDK for flag evaluation, and role-based access control. Full-stack monorepo with CI/CD, Docker containerization, and automated deployment on AWS EC2 and Vercel. 272 tests.
Pomodoro Timer
Interactive Pomodoro timer with testing, CI/CD, and automated deployment via Vercel. Hexagonal architecture with domain, application, and infrastructure separation. 52 tests.
Get in Touch
I'm currently open to new opportunities. Feel free to reach out at juancaricodev@gmail.com