• Engineered performant batch processing to calculate popular payments of millions transactions.
  • Express.js, RabbitMQ, Postgres, Elasticsearch
• Refactored codebase with Zustand & React Query, optimizing state and network layers.
  • Zustand, React Query
• Integrated AI for automated address normalization and OCR credential parsing.
  • Express.js, OpenAI API, pdf-parse, xlsx
• Resolved security vulnerabilities and implemented comprehensive E2E test coverage.
  • Supertest, Vitest, Postgres
• Accelerated the payment flow using optimistic UI updates, significantly reducing perceived transaction latency and creating a seamless checkout experience.
  • Elasticsearch, Express.js, RabbitMQ, Drizzle ORM
• Developed performant,60FPS UI animations to boost user engagement.
  • React Native Reanimated, React Native Gesture Handler
• Developed robust deep-linking handlers.
  • @react-navigation/native
• Maintained project health through consistent bug fixing and ongoing code optimization.

Happy Tails (E-commerce Platform): Developed a comprehensive online pet supply storefront utilizing Next.js, TailwindCSS, and React Query. Engineered complex catalog features including search, dynamic fi ltering, sorting, and shoppingcart functionality. Integrated an AI-powered chat and confi gured Google Search Console for traffi c monitoring andindexing.

Pasta La Pepito (Online Restaurant): Built a seamless customer ordering platform and a dedicated administrativedashboard leveraging Next.js, Zustand, and React Admin. Integrated LiqPay for secure payment processing andimplemented custom delivery workfl ows.