Dang Le

Android engineer · Vancouver, WA

I build mobile software that stays useful, fast, and dependable.

I’m Dang, an Android engineer with 8 years of experience shipping scalable Android and React Native applications. I’ve owned production apps serving hundreds of thousands of users—from feature development and architecture through reliability and Google Play releases.

Explore the project View résumé
8Years in mobile engineering
700K+Users across owned Android apps
99.82%Crash-free rate maintained

01 / Featured project

Exploring offline-first Android architecture.

JobTracker is a personal engineering project focused on keeping local and remote data consistent through unreliable connectivity.

Personal project Android

JobTracker

An offline-first Android application for managing job applications. The project demonstrates how local writes, background synchronization, and explicit conflict handling can work together in a modern Android codebase.

01
Local-first by design

Room is the single source of truth, so the UI remains fast and fully useful without a connection.

02
Reliable synchronization

WorkManager flushes queued GraphQL mutations, with version-based optimistic locking for safe reconciliation.

03
Conflicts made understandable

A side-by-side resolution flow lets users choose between divergent local and server versions.

  • Kotlin
  • Jetpack Compose
  • Room
  • Apollo GraphQL
  • WorkManager
  • Hilt
View source on GitHub
JobTracker dashboard showing application metrics, search, and a list of saved job applications
Application dashboard
JobTracker application detail screen showing job information and application progress timeline
Progress timeline

02 / Experience

Proven in production.

Eight years delivering mobile products—from Samsung retail experiences to consumer Android applications used at scale.

Jun 2021 — Present

Transaction Network Services · Remote, Seattle

Android Engineer

Own Android development across two consumer call-protection applications, leading features, production support, and releases.

  • Own USCC Call Guardian (500K+ users) and Xfinity Call Guard (200K+ users).
  • Eliminated sync-related crashes and maintained a 99.82% Crashlytics crash-free rate.
  • Delivered account synchronization, spam detection, FCM caller ID, deep linking, and REST integrations.
  • Resolved a production Firebase cost issue with a same-week hotfix.
Jul 2018 — May 2021

TecAce Software · Hybrid, Bellevue

Android Engineer

Developed Android and React Native applications for Samsung, combining Kotlin engineering with interactive retail experiences.

  • Delivered two flagship and three retail demo applications showcased on Samsung devices in Best Buy.
  • Built an interactive S Pen drawing app using the Samsung SDK and custom canvas rendering.
  • Developed media playback features and optimized widget animations.
  • Adopted early Android Jetpack and React Native patterns across MVP, MVVM, and dependency injection.

03 / Toolkit

What I bring to the build.

01

Mobile

Kotlin, Java, Android SDK, Android Jetpack, Material Design, React Native, JavaScript, TypeScript

02

Architecture

MVVM, Clean Architecture, dependency injection, offline-first design, maintainable application architecture

03

Data & platform

REST APIs, Retrofit, Room, Coroutines, Hilt/Dagger, WebView, Firebase, FCM, Crashlytics

04

Delivery

Android Studio, Gradle, Git, Google Play Console, production support, release ownership, cross-functional delivery

04 / Contact

Let’s build something people can depend on.

dannylpov@gmail.com