João Pedro Fonseca Email & Phone Number

Fulltime job for a Spanish/Canadian company. Its main product is a React Native app in which hundreds of thousands of users log their workouts daily and can track their fitness progress.Tech Stack - React Native, React (NextJS), Node (Express), PostgreSQL, Objective-C, KotlinDeveloped integrations with native health apps like Apple Health and Health Connect, so users could log their workouts and body measurements in the Hevy app and that data would be automatically synchronized with the health services (sent to and fetched from them);Developed an offline-first approach to logging body measurements using AsyncStorage;Developed a camera feature for body measurement logging so users could track their progress with pictures, compare them side-by-side, and share them on social media, boosting engagement and promoting the Hevy app with their network;Ran an A/B test to boost user engagement with “Connect phone contacts” feature;Worked on the exploration of having an AI create training routines based on certain parameters (fitness level, equipment available, how many workouts in a week);Managed the release of new versions of the app to beta and production environments.

IT consulting job for an american healthtech company that has a platform for decentralized clinical trials.Tech Stack - React Native, Node (Express, Microservices), MongoDBIntegrated MirageJS into the project to reduce frontend development dependency on the backend, resulting in less downtime for the team when services were not available and allowing development and acceptance test of new features without being blocked by other teams;Developed flow control features for the doubly linked list of activities that allowed users to enter multiple entries for a set of questions and conditionally redirect the user depending on their answers;Developed a feature for time-sensitive activities, making them unavailable in the app and also making the backend prevent answers from being added after the expiration;Wrote unit and integration tests with Jest and React Testing Library, and end-to-end tests with Detox to speed up smoke tests, reducing the time developers needed to spend testing basic features;Participated actively in the technical design of new features with the Product Owners, Product Managers, and other teams.

Campo Grande, Mato Grosso Do Sul, Brazil

Fulltime job for a company that provided software solutions to notary offices in the state of Mato Grosso do Sul in Brazil.Tech Stack - Delphi (legacy app), React, Node (Express), FirebirdMaintained a legacy desktop app in Delphi in which users could create documents and certificates, and automatically send information to the government API;Migrated the legacy desktop app to a web app written in React;Migrated data from MySQL, PostgreSQL and SQLServer databases to Firebird;Developed a web app in React that allowed the support team to track ongoing and finished requests from clients and create a knowledge database for the team;Developed automated reports that allowed users to audit the usage of stamps to sign legal documents, the amount of documents created by date and kind, check revenue per month and kind of document.

Postgraduate Degree, Organizational Leadership

Bachelor'S Degree, Computer Engineering