Developed backend services and business logic using C#/.NET and Entity Framework. Built and maintained responsive frontend interfaces using React and Material UI. Integrated electronic invoicing systems with Costa Rica Hacienda APIs and external services. Collaborated on debugging, optimization, and production issue resolution. Worked closely with real business workflows and operational requirements.

Designed and developed scalable web application modules using React, TypeScript, Node.js, and PostgreSQL. Built responsive interfaces and internal business tools for inventory, sales, customer management, and billing workflows. Developed and integrated REST APIs and third-party services to support business operations. Improved application reliability and performance by optimizing backend logic and database queries. Collaborated using Git workflows and agile development practices in fast-paced environments. Participated in debugging, testing, deployment, and continuous feature delivery processes.

Developed and maintained mobile application features using React Native. Integrated FireBase (Firestore) for real-time synchronization and NoSQL data workflows. Improved application stability, feature reliability, and debugging processes. Collaborated in iterative and agile development cycles.

Developed a web platform for medical prescriptions and appointment management using React, TypeScript, and PostgreSQL. Integrated frontend systems with backend REST APIs. Implemented authentication workflows with Supabase Auth. Maintained application performance and supported post-deployment improvements. Assisted with debugging and issue resolution in production environments.