Luiz Pansarini

Principal Software Engineer · Brazil

From IT helpdesk at Klabin to Principal Engineer in 14 years. I build the products I'd want to use — Next.js, React Native, and the messy backend that ties them together. Open to new opportunities.

Contact Resume

About

14years in tech

5companies

BR+USmarkets

100M+users reached

IT Support → Principal Engineer in 12 years

Web · Mobile · Backend — TypeScript daily

Mobile-first + WCAG 2.1 AA as standard, not an afterthought

Built the first US heavy-machinery e-commerce

I update /now when something changes, and post on /blog when something is worth saying.

Featured projects

View all projects →Read the blog →

Heavy Machinery e-commerce

Principal Software Engineer · 2024

First transactional storefront for US heavy machinery — Next.js + headless commerce + Odoo ERP + native mobile app.

No-code → Next.js migration

Tech Lead, Principal Software Engineer · 2025

Full migration from a no-code platform to Next.js App Router — preserving content, URLs, and SEO while unlocking performance and ownership.

Magazine Luiza Superapp

Senior Software Engineer · 2022

Shipping features inside a multi-tenant React Native app at Magalu scale — millions of MAU, 95%+ test coverage held cross-team.

Personal projects

Side projects built for fun, practice, and real users.

Starlimp Jundiaí

Live

E-commerce website for a cleaning supplies company serving Jundiaí, Várzea Paulista, and Campo Limpo Paulista. WhatsApp-first ordering with category browsing.

Next.jsTypeScriptTailwind CSS

Visit site View code

DoAção

In development

Platform connecting volunteers with local businesses in Jundiaí. Volunteers earn points for verified social actions (blood donation, clothing drives) and redeem rewards from partner companies.

Next.jsSupabaseDrizzle ORMTailwind CSSShadcn/UIZod

View code

NotificaMe

In development

Smart queue management system with geolocation-based automatic entry. Customers receive SMS/WhatsApp notifications and join queues remotely via location proximity.

NestJSPrismaPostgreSQLRedisTwilio

View code

MTG Price Monitor

In development

Magic: The Gathering card price tracker with Discord bot integration. Monitors price changes across multiple marketplaces and sends alerts when target prices are hit.

Next.jsDrizzle ORMTypeScriptDiscord.js

View code

Redzone Boss

In development

Landing page for an American football strategy simulator. Bilingual (PT/EN) with automatic language detection and early-access email capture.

Next.jsTypeScriptTailwind CSS

View code

Career

Machinery Partner
Principal Software EngineerJan 2023 — Apr 2026
- Leading the no-code → Next.js + headless CMS migration powering the first US heavy-machinery e-commerce.
- Owning the full stack: Next.js App Router on the web, React Native for the field-rep app, and the TypeScript backend that ties them together.
- Setting the engineering bar — code review, accessibility (WCAG 2.1 AA), performance budgets, and the hiring loop for new engineers.
Luizalabs (Magazine Luiza)
Senior Software EngineerApr 2021 — Jan 2023
- Shipped React Native features inside the Magazine Luiza Superapp — one of Brazil's most-installed retail apps, serving tens of millions of monthly users.
- Worked on payment, checkout, and personalization surfaces; raised test coverage and shipped behind feature flags so launches were boring.
- Collaborated across iOS, Android, web, and native teams to keep parity across platforms at retail scale.
Corebiz (VTEX)
Software EngineerMar 2020 — Apr 2021
- Delivered VTEX e-commerce storefronts and integrations for retail clients across Latin America.
- Built React + TypeScript surfaces backed by VTEX IO, focused on conversion-critical pages (PDP, checkout, cart).
- Bridged design hand-off, accessibility, and SEO requirements with the realities of an e-commerce platform on tight retail deadlines.
UAUBox
Full Stack DeveloperMar 2019 — Mar 2020
- Pivoted from IT support into engineering — first paid role writing production code.
- Shipped customer-facing features across the React frontend and the Node.js backend of a subscription-box e-commerce.
- Learned the full software-delivery loop on the job: code review, deploy, on-call, customer feedback.
Klabin S/A
IT Support AnalystFeb 2012 — Feb 2019
- Seven years on the IT helpdesk for one of Brazil's largest pulp & paper manufacturers — production lines, factory floor, corporate users.
- Diagnosed everything from broken PLCs to ERP timeouts; learned how real businesses actually use software (and why they hate it).
- Started teaching myself JavaScript on nights and weekends; that habit is what made the UAUBox pivot in 2019 possible.

Stack & Skills

Underlined = daily use

Next.js

React

TypeScript

Tailwind CSS

Shadcn/UI

Radix UI

HTML/CSS

React Native

Expo

iOS / Android

Node.js

TypeScript (server)

REST APIs

GraphQL

Server Actions

Playwright

Jest

React Testing Library

Vitest

axe-core

Vercel

AWS

GitHub Actions

Docker

PostgreSQL

MongoDB

Redis

Prisma

Git

GitHub

VS Code

Figma

Biome

pnpm

What I'm doing now

Last updated: May 6, 2026

Wrapped up my time at Machinery Partner in April 2026 after leading the no-code → Next.js migration that became the first US heavy-machinery e-commerce. Currently open to work — looking for principal or senior full-stack roles in web, mobile, or product-focused teams. Writing the occasional engineering post on /blog in the meantime.

See more on the /now page →