Hana Sao User

• Drove a 32% sales increase by designing a personalized Learning Path and redesigning onboarding around user-behavior analytics.
• Introducing Create Story System managed by Gen IA (Texts OpenAI, Image Generation, Text To Speech Audio Generation with accent and emotion driven audios)
• Improved retention by 17% by shipping AI-driven personalized stories informed by engagement data.
• Reduced ANRs

Developed mobile (iOS/Android) and desktop (Windows/macOS/Linux/Web via WASM) apps using Compose Multiplatform for UI and Kotlin Multiplatform for business logic. Implemented features including backend-driven analytics, document generation/QR validation, admin dashboard logic, and purchases, using shared UI/view-model patterns across platforms.

Development of Mobile (iOS and Android) and Desktop App (Windows, Mac, Linux and Web[WASM]) with Compose Multiplaform for UI and Kotlin Multiplatform for Business Logic with Responsive UI adapted for Tablet/Desktop and Mobile

This application has the target to use the Backend for Mobile Devices and Desktop App for faster use of the System, Generate Automated Documents, Do purchases, Get Analytics

• Built the end-to-end product—a Compose Multiplatform Android app plus its backend—generating 32,000 certificates/month
and cutting processing time from hours to seconds for 5,000+ registered instructors ( 110 daily active).
• Drove 12% paid conversion through a custom instructor-to-instructor referral engine integrated with Stripe payments.
• Eliminated 1 hour of manual review per instructor by

• Migrated the app’s crash-reporting and monitoring stack from Bugsnag to Instabug (Luciq SDK), modernizing observability with
minimal disruption to production.
• Reduced app cold-boot time by 13% (912ms to 791ms) through custom initialization and lazy loading of library providers.
• Strategies to reduce bugs and improve data analysis for product feature deliveries.
• Engineered the migration of 2

Shipped the Wallet experience for Digital@FEMSA’s Spin Pro app, delivering business analytics, in-person POS card payments, and
mobile phone top-ups (Jetpack Compose, GraphQL, Koin, modularization).
• Engineered a cross-platform secure Payments SDK (Android + iOS), enabling reusable wallet integrations across both native plat-
forms, SDK compatible with Third parties companies and documentation fo

Shipped the Wallet experience for Digital@FEMSA’s Spin Pro app, including business analytics, in-person POS card payments, and mobile phone top-ups. Engineered a secure cross-platform Payments SDK (Android + iOS) for reusable wallet integrations and third-party documentation.

We develop an application where you can book a visit, selecting the date, space and schedule you will be there, helping the back to office
RoomDB
Okta Authentication Flows, Coroutines, Retrofit Kotlin
MVVM
Modules

Developed an application for booking visits by selecting date, space, and schedule. Worked with RoomDB, Okta authentication flows, coroutines, Retrofit, and Kotlin MVVM modules.

Maintained and enhanced high-traffic streaming apps including Disney Now, ABC, and FOX by reducing bugs, improving runtime performance, and shipping new production features. Worked with Android TV and Fire TV platforms.

• Maintained and enhanced high-traffic streaming apps including Disney Now, ABC, and FOX, reducing bugs, improving runtime
performance, and shipping new production features.
• Working with Android TV, FireTV and more

Worked as an Android Developer at Konfío.