JD Juan Diego Garita

Senior Mobile Engineer

Juan Diego Garita

I build polished, reliable mobile apps with Kotlin Multiplatform.

10+ years shipping production mobile apps for startups and large companies across ads and authentication.

Download resume Get in touch
Illustrated portrait of Juan Diego Garita

About

I'm a Google Certified Associate Android Developer in Kotlin with 10+ years of experience writing clean, well-tested code for startups and large companies. I focus on Kotlin Multiplatform, Jetpack Compose and modern Android, and I care deeply about craftsmanship, collaboration and continuous improvement.

  • Google Certified Associate Android Developer (Kotlin)
  • Kotlin Multiplatform and Jetpack Compose specialist
  • Agile practitioner — Scrum, Kanban, TDD, pair programming

Indie Apps

Focused, production-ready cross-platform mobile apps built and maintained independently.

  • Faint

    AI-Powered Coffee Tasting Journal

    A companion app for specialty coffee lovers. Scan roaster tasting cards, track flavor profiles, log brewing parameters, and build a personalized coffee map.

    • Kotlin Multiplatform
    • Compose Multiplatform
    • Room
    • Ktor
    • ML Kit
    • Cloudflare Workers
    • RevenueCat
    • frnk
    Visit Landing page Get it on Google Play Download on the App Store

  • Still

    Smart Food Freshness & Waste Tracker

    Keep track of fridge and pantry contents with predictive shelf-life tracking and proactive reminders before food expires.

    • Kotlin Multiplatform
    • Compose Multiplatform
    • SQLDelight
    • RevenueCat
    • Firebase
    • Glance Widgets
    • frnk
    Visit Landing page Get it on Google Play Available on App Store — Coming soon

Open Source & Tooling

Reusable architectural frameworks, templates, and libraries created to speed up modern mobile development.

  • frnk

    Modular Kotlin Multiplatform Toolkit

    An opinionated, production-grade architectural foundation for Kotlin Multiplatform apps. Features headless UI contracts, pluggable backends, and strict MVI pattern implementations to launch new mobile products in days.

    • Kotlin Multiplatform
    • Compose Multiplatform
    • Compose Unstyled
    • MVI
    • Navigation 3
    • Koin
    • Room
    Visit Landing page View source on GitHub

Experience Summary

  1. 2026 — Present Experian

    Senior Android Engineer

    Experian® app · 10M+ downloads on Google Play
    • Drive the mobile Experimentation team, shipping A/B tests and UI/UX experiments that tune engagement and key user flows across the apps.
    • Build cross-platform experiment capabilities that work within iOS constraints, keeping Android and iOS at feature parity for smooth rollouts.
  2. 2022 — 2026 Swiftly

    Senior Kotlin Multiplatform Engineer

    • Helped build a Kotlin Multiplatform "App Factory" that streamlines shipping client apps to both Android and iOS.
    • Designed and built a reusable ads component powered by the Xandr Mobile SDK — one integration, reused across client apps.
    • Shipped end-to-end monetization — video, interstitial, and banner ads — across multiple client apps.
  3. 2021 — 2022 Mode

    Senior Android Developer

    Mode app · 50M+ downloads on Google Play
    • Built engagement features designed to bring users back every day and grow daily active users.
    • Shipped a robust surveys feature that brought multiple third-party survey providers into a single experience.
    • Wrote the architecture docs, validated features with Product through A/B tests, and orchestrated cross-team releases.
  4. 2017 — 2021 Trusona

    Android Developer

    Trusona app · 10K+ downloads on Google Play
    • Designed and built the Trusona Android SDK, letting third-party apps adopt Trusona's authentication system.
    • Designed and built Trusona's official Android app.
    • Automated release pipelines with Fastlane and shipped features in Kotlin and Java, test-first with TDD, in a Kanban flow.

Tech stack

Core

  • Kotlin
  • Java
  • Swift
  • Coroutines
  • Flow
  • Kotlin Multiplatform

Android

  • Jetpack Compose
  • Android SDK
  • Gradle
  • Koin
  • Firebase

Tooling

  • Git
  • Fastlane
  • CI/CD
  • TDD
  • A/B Testing
  • MCP
  • AI Agents

Architecture

  • MVVM
  • MVI
  • Clean Architecture
  • SOLID

Let's talk

Open to senior Android and Kotlin Multiplatform roles, contract work and interesting collaborations.

Friends & fellow makers

Independent studios run by friends of mine. Each one is its own business, unaffiliated with me.

  • AKnght Studios

    Games, apps and tools for writers, from a small team that has always worked remotely.

    aknghtstudios.com

Shared as a courtesy: no payment, partnership, or business relationship. External sites are operated independently, and I'm not responsible for their content.