Cristian Fonseca

Tech Lead @ Evaluar

Frontend engineer building scalable applications with 5+ years of experience. Based in Tavares, RS, Brazil.

Currently leading frontend engineering at Evaluar, where I architect and maintain complex React and Vue applications serving thousands of users. Originally from Cuba, passionate about clean code, design systems, and developer experience.

Currently

2023 — Now

Tech Lead - Frontend

Evaluar · Leading frontend team and architecture decisions

2019 — 2023

Senior Frontend Engineer

Multiple companies · Building production web applications

Technologies

Languages

TypeScript

JavaScript

Python

Frameworks

Next.js

Nuxt

React

Vue

Tools

Git

Docker

CI/CD

Cloudflare

Open Source

add-dir-opencode Creator · 6 stars · 10 releases

OpenCode plugin that replicates Claude Code's /add-dir command. Enables adding external directories to OpenCode sessions with automatic permission handling, context injection, and cross-project file access without repetitive approval prompts.

TypeScript · OpenCode Plugin · CLI Tool

next-hexagonal-architecture Creator · 63 stars · Template

Production-ready Next.js template implementing hexagonal (clean) architecture. Demonstrates how to structure large-scale React applications with clear separation between domain logic, application use cases, and infrastructure adapters.

TypeScript · Next.js 15 · TailwindCSS · Bun

Email · GitHub · Twitter

Tavares, RS, Brazil