Hi, I’m André Simões

Front End Engineer

Person developing and demonstrating their emotions by doing this.

About me

I’m a technology enthusiast and hobbyist programmer who began my professional frontend journey building applications with React and TypeScript. I love exploring new technologies, contributing to open-source communities, and staying active within tech spaces. Outside of tech, I enjoy spending time with friends, listening to music, playing soccer, and gaming.

My main skills include React, JavaScript/TypeScript, and Node.js, along with strong experience in automated testing, SEO and performance optimization, and the broader frontend ecosystem. I’ve worked on scalable systems handling high traffic and large datasets, always focusing on reliability, maintainability, and modern engineering best practices.

Experience

Dito

FrontEnd Developer

I have worked with a PWA called Dito Agenda, an application based on a sellpoint for each client that aimed to boost their sells. Utilizing technologies like React, TypeScript, JavaScript, Jest, Enzyme, Styled Components and others.

Jan 2019 - Jun 2019

StudioSol

FrontEnd Developer

I contributed to the frontend of major LATAM platforms (Cifra Club and PalcoMP3), delivering new features with React/TypeScript, leading a high-performance PWA, integrating WebRTC, and improving SEO and performance. I also established modern testing practices with Cypress, Testing Library, Jest, and Enzyme, raising code quality and engineering standards across the team.

July 2019 - Fev 2021

MadeiraMadeira

FrontEnd Engineer

Working at one of the unicorn startups in Brazil our product was e-commerce. Working in a structural team, I participated in several decisions to improve the platform and the turn of the legacy application to a new one in NextJs.

Fev 2021 - Mai 2021

Grupo Boticario

Senior FrontEnd Engineer

I built and maintained React/TypeScript microfrontends for large-scale, white-label e-commerce platforms (e.g., Boticário, QDB, Eudora), and architected a CMS page builder from scratch with Next.js. I improved performance, SEO, accessibility, and scalability while implementing CI/CD with Jenkins and robust testing (Cypress, RTL), and also mentored developers to elevate overall engineering quality.

Mai 2021 - Oct 2022

Syngenta Digital

Senior FrontEnd Engineer

I lead React development for scalable, high-performance UIs handling large datasets, modernizing legacy systems with microfrontends and Vite (tree-shaking, lazy loading) while driving a migration to S3/CloudFront for lower latency and integrating Sentry for advanced monitoring. I champion TDD and E2E testing across the monorepo, strengthen CI/CD practices, and mentor developers to elevate performance, reliability, and engineering standards.

Oct 2022 - Jun 2025

Linktree

Senior Software Engineer

I work on the core Linktree application—link editing, profiles, and customization—building new features end to end across React microfrontends and legacy PHP. I helped migrate core components to modern React architecture, fixed critical bugs, and optimized performance with Datadog (including synthetic tests). I also contribute strong code reviews and refactors using JavaScript/TypeScript to improve maintainability and reliability across the platform.

Jun 2025 - Fev 2021