Piero David Saldaña Calderon

Architected and led the replacement of a legacy Python/PyQt and MongoDB system with a Java, Spring Boot, React, and PostgreSQL platform. Implemented authentication, RBAC with Keycloak, billing, dashboards, and integrations, and served as sole technical owner.

Built Flutter passenger and driver applications supporting fare negotiation, booking, availability, notifications, and trip history. Designed and developed a React and TypeScript back-office platform for trip monitoring and operational metrics.

Develop and maintain academic and administrative applications using Java/Spring backend services and React/TypeScript frontends. Led the Yachayhuasi frontend team and designed authentication workflows for a UNDP project.

Built a Django and React financial analytics application with interactive dashboards and charts. The project reported a 50% increase in prospective-customer acquisition during its first quarter.

Built Flutter passenger and driver applications from Figma designs and implemented predictable state management with Bloc.

Programmed Arduino devices in C++ for signal conditioning, temperature calculation, and biometric data capture, integrating them with Flutter and React applications for real-time patient telemonitoring. Delivered metrics visualization and notification features across mobile and web applications.

Taught programming fundamentals entirely in English to high school students.

Led frontend development and basic QA, and built a Flutter application for pharmaceutical ordering and delivery.

Built an Arduino biometric device, Flutter application, and React dashboard for real-time patient monitoring and notifications.

Designed and implemented a concrete-plant automation system covering sensor collection, actuator control, database storage, and real-time web monitoring.

Completed master's coursework in Data Science.

Earned a Bachelor of Science in Mechatronics Engineering.