Luiz Barreto
Frontend Engineer at Datadog
Paris, Ile-de-France
Summary
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RockstarLuiz Barreto is a Frontend Engineer based in Paris with 11 years of experience building polished web and mobile user interfaces. He has driven UI and UX-focused work at Ledger—contributing to both desktop and mobile Ledger Live repositories where he fixed navigation, theming, and onboarding components—and currently applies that craftsmanship at Datadog. Known for improving visual consistency and ship-ready components, Luiz combines pragmatic bug fixes with thoughtful UI enhancements like install-progress displays and byte-size formatting utilities. His background spans startups and product teams, including lead engineering responsibility at Ledger and technical ownership early in his career, which gives him both hands-on coding depth and product sensibility. Colleagues appreciate his eye for detail and propensity to add tests and type fixes that reduce regressions behind the scenes.
11 years of coding experience
7 years of employment as a software developer
French, English, Portuguese, Spanish
Github Skills (20)
component-based10
javascript10
react-native10
mobile-development10
typescript10
user-interface10
ui-design10
uid10
front-end-development10
typescript-types10
mobile10
modular-architecture10
typescripts10
react10
electron9
Programming languages (7)
Github contributions (5)
LedgerHQ/ledger-live-mobile
Nov 2020 - May 2022
⛔️ DEPRECATED - Ledger Live (Mobile)
Role in this project:
Front-end Developer
Front-end DeveloperContributions:333 reviews, 268 commits, 436 PRs in 1 year 5 months
Contributions summary:Luiz primarily contributed to the mobile version of Ledger Live, making a series of changes related to the user interface (UI). These changes addressed visual issues such as balance display and layout issues in various screens. Furthermore, the user was involved in the implementation and styling of UI components for the onboarding process, indicating a focus on the user experience within the application.
react-nativebluetoothblockchainwalletcryptocurrency
LedgerHQ/ledger-live-desktop
Feb 2020 - Apr 2022
⛔️ DEPRECATED - Ledger Live (Desktop)
Role in this project:Front-end Developer
Front-end DeveloperContributions:312 reviews, 296 commits, 301 PRs in 2 years 2 months
Contributions summary:Luiz's contributions primarily revolve around developing and modifying user interface (UI) components within the Electron-based Ledger Live (Desktop) application. Their work involved adding and updating UI elements in the manager section to include features such as install success banners, placeholder for tokens and also updated the display for the app install progress bar. The code changes indicate a focus on enhancing the user experience, with modifications to the presentation of information and the incorporation of new UI components. These changes also include the addition of styling and theming.
electronwalletcryptocurrencydesktopledger
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