Yuri – React, Typescript, Node.js

A travel buddy to discover places, optimize routes, and learn with audio guides.

• Built and maintained a full-stack travel platform used in 40+ cities worldwide, featuring hundreds of attractions and multilingual support (EN, ES, PT).
• Designed and developed a React Native mobile app (Google Play & App Store) with subscription model integration.
• Implemented a Python (FastAPI) backend with Alembic, SQLAlchemy, and PostgreSQL/PostGIS for efficient geospatial data processing and analytics.
• Developed an admin panel using React, Vite, and Tailwind to manage locations, AI-generated content, translations, audios, and tours.
• Built a marketing website using Astro (SSR) to showcase features and publish tour packs.
• Managed end-to-end product development and growth, covering engineering, AI, infrastructure, marketing, sales, and analytics.

It's a web application designed for scientists and engineers to replace complex spreadsheets, built within a monorepo and modeled after MS Excel and Google Sheets.

• Designed and implemented the front-end architecture for the data-processing application.
• Added comprehensive end-to-end tests using Playwright, covering major user workflows.
• Built composable, multi-level filters and enforced data constraints for efficient data handling.
• Leveraged Web Workers to process and render 120,000+ chemical molecules directly in the browser.
• Delivered strong project outcomes, leading the client to extend the contract for additional features.

It's a web application for a startup to manage construction sites.

• Implemented dynamic generation and streaming of DOCX and PDF reports in Node.js for web and mobile applications.
• Collaborated with the mobile team to design and integrate the reporting solution on their platform.
• Communicated directly with a non-technical client to gather and clarify requirements, ensuring the solution met business needs.

Worked on two systems leveraging LLMs for RAG to access external data. One retrieved scientific paper insights via a Next.js chat interface for a life sciences company, and the other delivered case insights in real-time through a client-side rendered React app for attorneys.

• Collaborated with developers to build a real-time chat solution.
• Implemented user interfaces based on Figma designs.
• Assisted the back-end team with API design, proactively identifying and resolving potential streaming issues using Lambda and Python.

Worked on the revamp of one of the largest marketplaces for international student housing that handles thousands of daily global visitors.

• Added unit and end-to-end test coverage to ensure application reliability.
• Implemented internationalization support for multiple languages.
• Developed visit booking flows, enhancing usability, performance, and visual appeal.