My journey at Estradata began as a Frontend Developer, where I built intuitive user interfaces using React. Our team developed a suite of applications that empowered agencies at local, national, and international levels.

The most significant project I worked on was a WhatsApp CRM system built on top of the pedro's lopez whatsapp-web.js library.

Used by over a thousand users, this system provided a powerful alternative to the official WhatsApp Business platform.

One of the biggest challenges I faced was handling massive datasets efficiently. I tackled this by optimizing backend data processing and leveraging React's API to create a seamless and responsive user experience.

As the project evolved, we introduced an official Meta API integration, offering clients a direct connection. This transition also led to a major codebase migration from React + JavaScript + Laravel to Next.js. The goal was to unify the frontend and backend into a single repository, making the codebase more maintainable and scalable.

To further enhance code quality and reliability, we adopted TypeScript, allowing for a more structured and type-safe development process. Libraries like Zod were instrumental in implementing validation across both frontend and backend while generating type definitions. We also integrated Prisma as an ORM for both SQL and MongoDB, ensuring type safety at every layer of the application.