Jorge – Kotlin, AI-assisted coding, Android

A global digital payments platform that provides secure financial services, including digital wallets, peer-to-peer payments, cryptocurrency trading, and collaborative money management for millions of users worldwide. The product includes features such as crypto investing, stablecoin payments, group savings, and modernized money transfer experiences, helping customers manage and move money seamlessly across markets.

• Delivered Android features for the Crypto platform, including Recurring Buys, Third-Party Transfers, UX redesigns, and Business Accounts support;
• Contributed to the launch and ongoing evolution of PayPal USD (PYUSD), the platform's stablecoin;
• Participated in the international expansion of crypto services for users in Luxembourg;
• Implemented core Android functionality for Money Pools, enabling collaborative group savings;
• Led development of the Review screen for the redesigned Send & Receive Money experience using Jetpack Compose, MVI, Kotlin Coroutines, and StateFlow;
• Collaborated with backend, product, design, QA, and iOS teams to deliver end-to-end features from technical design through production;
• Maintained high engineering standards through code reviews, SonarQube quality gates, accessibility practices, testing, and CI pipelines.

A digital fitness and wellness platform that provides on-demand workout programs, nutrition guidance, and video streaming content to millions of users worldwide. The product helps users achieve their health and fitness goals through personalized training experiences while delivering reliable, high-performance multimedia streaming across Android devices.

• Delivered new Android features for a large-scale consumer fitness platform serving millions of users;
• Improved application performance and responsiveness to provide a smoother experience across media-rich screens;
• Implemented Android UI components using Kotlin and Jetpack libraries;
• Integrated GraphQL APIs and collaborated closely with backend engineers;
• Optimized the user experience of a media-rich Android application, where performance and responsiveness directly impacted user engagement;
• Contributed to modular Android architecture, code quality, and maintainability;
• Worked within a fully distributed international engineering team following Agile development practices.

A digital companion application for patients receiving immunoglobulin therapy, designed to support treatment management and improve communication between patients and healthcare providers. Built under FDA-regulated healthcare software processes, the platform emphasizes secure data handling, reliable offline functionality, and consistent synchronization to ensure a dependable experience across multiple countries.

• Modernized a legacy Android application by migrating Java components to Kotlin and adopting modern Android architecture;
• Implemented offline-first data persistence with Room and reliable background synchronization using WorkManager to ensure consistent data across devices and cloud services;
• Designed scalable and resilient mobile architecture focused on maintainability, offline reliability, and performance;
• Developed secure, modular, and testable Android components following healthcare software quality standards and FDA-regulated development processes;
• Collaborated with backend engineers, QA, product owners, and cross-functional teams to deliver production-ready healthcare features;
• Improved application reliability and long-term maintainability while supporting a globally deployed digital healthcare platform.

A mobile software development company specializing in custom Android and iOS applications for enterprise clients across multiple industries. The company delivered digital solutions for education, logistics, workforce management, retail, and enterprise operations, helping organizations streamline processes and modernize their mobile capabilities through tailored software.

• Co-founded and helped grow a mobile software development company serving enterprise clients;
• Designed, developed, and released more than 10 Android and iOS applications for commercial customers;
• Led technical decisions, application architecture, and feature implementation across multiple concurrent projects;
• Worked directly with clients to gather requirements, define technical solutions, and deliver production-ready applications;
• Mentored junior developers and promoted Android development best practices within the engineering team;
• Delivered mobile solutions across education, logistics, workforce management, retail, and enterprise operations.

An augmented reality retail application created for The Shopping Night Barcelona, enabling shoppers to interact with printed materials, storefronts, and product catalogs through image recognition and AR experiences. The platform connected physical retail campaigns with e-commerce and social media, delivering engaging digital experiences during one of the city's flagship innovation events held alongside Mobile World Congress.

• Developed Android features for an augmented reality retail application using image recognition technologies;
• Integrated interactive AR experiences for storefronts, printed catalogs, advertising campaigns, and promotional materials;
• Connected physical retail experiences with digital platforms, including e-commerce websites and social media;
• Collaborated within a startup environment to deliver one of the showcase mobile applications presented during The Shopping Night Barcelona;
• Worked closely with multidisciplinary teams throughout the complete mobile development lifecycle.