Franco Javier Ferreyra

Built an end-to-end self-service kiosk in React, including sales flow, cart, server integration, and real-time stock control through SSE. Implemented mixed payments, virtual money for loyalty cards, handling pending orders and refunds, accounting-correct discounts, and heatmaps based on activity and orders using Stripe. Designed real-time notifications with SSE for stock alerts, including currency configuration, date handling, activity credits, and configurable credit value. Developed the Express and MongoDB server with user authentication, Google login, expiring session tokens, and license expiration system. Built forms, CSV and PDF exports, editable maps, element placement on floor plans, virtual keyboard, and sales flows driven by business rules for stock, promotions, discounts, and duplicate items. Contributed to quality strategy with Playwright end-to-end tests and unit tests using Jest and Vitest. Used Tailwind v4 and Tailwind variants for theming tied to selected themes.

Developed front-end features using HTML, CSS, Tailwind CSS, TypeScript, Next.js, and vanilla JavaScript. Implemented multilingual content with i18next.

Built and maintained front-end features with React, TypeScript, Material UI, React Query, and i18next. Worked in Agile teams using Jira, Bitbucket, Docker, and Jest. Supported responsive interfaces and reusable component patterns aligned with production environments.