José Carlos Paiva

I architected and engineered Toti, the conversational AI assistant integrated into the HUB Digital (INOV-NORTE) platform, serving higher education institutions in Portugal.

Toti acts as an intelligent, source-grounded companion, helping educators, researchers, and students discover catalog resources, navigate learning pathways, and explore educational technologies through natural-language conversations.

I designed and implemented the production back end of GamiBot, an AI pedagogical agent integrated directly into Moodle. It features conversational assistance via RAG, Qdrant vector database content synchronization, automated feedback pipelines, and native gamification connecting AI interactions and timely task completions to learner rewards.

I delivered the complete Academ_IA XP platform, including public course discovery, learner area, video watch-time verification, session attendance via unique validation codes, live stream integration, dynamic PDF certificate generation, and transactional HTML email notifications.

An Angular web application powered by a microservices infrastructure targeting the analysis of real-time psychophysiological and linguistic markers of expressive writing by analyzing handwriting traces collected with smartpens and produced texts and measuring electrodermal activity, facial muscle activity, and heart activity. In addition, to fully support the management and replay of the experiments with multiple analysts and participants, it implements several NLP techniques to gather several text metrics and emotions and a pause-burst analysis algorithm to explore handwriting.

Mooshak is a system for managing programming contests on the web, including automatic judging of submitted programs, answering clarification questions about problem descriptions, reevaluation of programs, and tracking printouts, among many others.

Mooshak supports different kinds of contests, especially those based on ICPC rules. It also supports IOI and "shortest program" contests and can be easily extended for new types of contests. The system was initially intended for contests, but it is increasingly being used in programming courses: giving instant feedback on practical classes, receiving and validating assignments submissions, and marking assignments.

Web application and API for managing data regarding the entry and exit of ships of the Lisbon harbor in the 19th century, including captains, ships, goods transported, and geospatial information about the routes taken between source and target harbors.