Doni Martins

Designed and built an end-to-end web platform for a wine importer/distributor operating in the U.S. market, replacing manual spreadsheet workflows with a centralized, data-driven system. Public-facing side: A product catalog showcasing the company's full wine portfolio for the American market, built with Node.js and Vite for fast, modern performance. Private sales portal (role-based access):

Sales reps get a personal dashboard with their own order history, active accounts, and performance metrics Managers get a full business overview with filters by rep, region, and time period — plus invoice search and export

Built an automated cryptocurrency trading bot using Node.js with full integration to the Binance API. The bot monitors market conditions and executes trades based on configurable strategies.

• • Integrated real-time data streams via Binance WebSocket API

• • Implemented configurable trading strategies with risk controls

• • Built logging and monitoring tools to track performance over time

Designed and developed a full-stack web solution for a wine export business, including an e-commerce storefront and a custom CMS for managing dynamic product content. Built with Node.js and JavaScript, with a focus on performance and ease of use for non-technical staff.

• • Delivered a custom CMS that significantly reduced content update time, enabling non-technical staff to manage the product catalog independently

• • Integrated payment and product catalog management features

• • Implemented clean UI components for the client-facing storefront