Architected mobile features for crypto products used by millions at PayPal and Venmo. Developed and reviewed HLD and LLD documents. Mentored 10+ engineers and led technical decisions across multiple teams. Reduced engineers' time commitment by 90% (from 4 hours to 20 minutes), freeing up valuable resources weekly, by automating the release process with Anthropic's Claude LLM. Accelerated feature delivery by 50% by developing Clean Architecture SDKs, eliminating code duplication across Android/iOS applications. Ensured feature parity and optimized resource allocation for projects. Improved scalability and enabled parallel team development by defining modular Clean Architecture. Reduced UI complexity and accelerated feature delivery by driving adoption of Jetpack Compose. Automated repetitive tasks and improved team efficiency by building AI-driven workflows with Claude Code.

Built and scaled core remittance features for Xoom global platform (a PayPal Service). Contributed to architectural evolution toward a modern Android stack. Improved app stability and performance, reducing crashes and increasing user retention. Spearheaded a Java to Kotlin migration, reducing project code by 30% and boosting test coverage by 25%, significantly increasing developer satisfaction. Accelerated engineering efficiency by 30%, reducing CI time from 1+ hour to minutes by integrating Gradle Enterprise and optimizing sharding configurations. Designed reusable networking and data layers using Retrofit and GraphQL with Apollo and clean architecture principles. Improved code reliability by introducing testing practices (JUnit, MockK, Espresso, Robolectric).

Led development of multiple mobile applications (Android, iOS, Windows Phone), managing a distributed team. Delivered products including navigation systems, event apps, and a Unity-based app (AgentPiggy) for an international competition. Built and scaled backend services with Python/Django, designing REST APIs, integrating third-party platforms like Google, Facebook, and Twitter. Implemented core mobile features such as push notifications, location services, and real-time data flows.

Delivered end-to-end mobile, web, and backend solutions for startups and nonprofits, owning system design, implementation, and deployment. Built Android app from scratch for a coupon platform ('Swapp'), integrating Parse for authentication, data, and push notifications while maintaining parity with iOS. Developed scalable web modules (PHP/Drupal) for high-traffic football betting platform during the 2014 World Cup. Designed and deployed a public Wi-Fi system (network + software), including router configuration, captive portal, bandwidth controls, and an analytics dashboard.

Developed and maintained backend services (Java EE, Spring, Hibernate, Oracle) for telecom client Movistar Panamá, supporting business-critical operations at scale. Translated business requirements into technical designs within a hybrid Agile model, balancing formal documentation with iterative delivery. Optimized a critical batch process from 60 to 1 minute by redesigning tree traversal logic and eliminating redundant database calls, significantly improving system performance and efficiency.

Developed and customized dynamic websites using Joomla (PHP, MySQL), building reusable modules and components tailored to client needs. Enabled user engagement, authentication, and content sharing by integrating social platforms. Delivered responsive, user-friendly interfaces using HTML, CSS, jQuery, and Bootstrap. Ensured cross-browser compatibility and maintainable front-end structure.