# Filipe Esteves > Portfolio of Filipe Esteves, Senior Designer & Builder at PicPay, based in Maceió, Brazil. This site presents selected digital product design work and professional background, including product strategy, UX, checkout optimization, design systems, and creative tools. ## Portfolio and case studies - [Portfolio home](https://filipeesteves.com/): Overview of Filipe's work and experience. - [Stone checkout case study](https://filipeesteves.com/cases/checkout): End-to-end redesign focused on improving checkout conversion. - [Unnnic design system case study](https://filipeesteves.com/cases/unnnic): Unifying three products with a shared design system. - [Durves case study](https://filipeesteves.com/cases/durves): A creative tool for generating patterns and reusable assets.