
Project
Weather App
A weather dashboard inspired by Windows Weather. It adapts the page to the selected city and consumes OpenWeather data with React and TypeScript.
Front-end developer
Hi, I'm Adonai. I build React, Next.js, and TypeScript interfaces for financial products, White Label platforms, and systems people rely on every day.

Technologies I use to build product interfaces and full-stack solutions.
Selected work
A few production projects, studies, and experiments that helped me grow in React, TypeScript, API consumption, UI organization, and maintainable code.

Project
A weather dashboard inspired by Windows Weather. It adapts the page to the selected city and consumes OpenWeather data with React and TypeScript.

Project
A React and TypeScript feed built during Rocketseat's Ignite program, focused on components, state, and publication interactions.

Project
An end-to-end habit tracker built during NLW Ignite. The interface turns daily progress into a tracking grid backed by a Node API.

Project
A finance dashboard for tracking income, expenses, and totals. I used MirageJS to model API behavior while building the React and Sass interface.

Project
My first React project: a Netflix-style catalog powered by The Movie Database API, with featured titles, recommendations, and genre sections.

Project
A focused CSS study for neon button styling, hover feedback, and visual polish without JavaScript.

Project
A one-day technical challenge for an institutional landing page with company content, workplace highlights, news, and contact sections.

Project
A college project that reads a local MP3 file and renders an audio visualizer from frequency data. It targets desktop interactions.
Journey
I have 8+ years in software across support, implementation, full-stack development, and front-end engineering. That mix helps me see more than the screen: I understand business rules, work with different teams, and turn complex flows into clearer interfaces.
July 2024 to present
I lead front-end development for White Label internet banking and payment platforms with React, Next.js, and TypeScript. I also work with banking integrations such as Pix, TED, bank slip issuance and payments, with attention to security and PCI DSS.
November 2022 to May 2023
I built interfaces for a condominium access-control platform with React and TypeScript, including resident invitations, QR Code validation, WhatsApp/chatbot registration, and facial recognition access.
November 2021 to June 2024
I developed and maintained financial systems, acquirer solutions, receivables advance flows, and an auto repair ERP covering inventory, finance, invoicing, and service orders.
February 2017 to October 2021
I supported and implemented agricultural management software, configuring modules such as inventory, cost centers, chart of accounts, and service orders. Later, I built new features with GeneXus.
January 2017 to December 2020
I studied Computer Science while gaining practical experience with clients, software implementation, and development.