This position is closed and is no longer accepting applications.

Android Engineer

SpeakBUDDY Tokyo
  • 💴 ¥5.5M ~ ¥10M annually
  • 🏡 Fully remote
  • 🧪 3+ years experience required
  • 💬 No Japanese required
  • 🌏 Apply from abroad
  • 🧳 Relocate to Japan

About SpeakBUDDY

SpeakBuddy is an online service that helps users acquire language abilities.

Key benefits

  • Use AI technology
  • Work in a high traffic environment
  • Improve your Japanese skills

About the position

This is an Android Developer position for the app “SpeakBuddy”

What’s great about this position

  • Be part of developing an AI app that will change the industry
  • You will engage a frontend position, so you can get feedback directly from users
  • No matter where you’re from you can be part of a diverse team
  • You can develop using the latest architecture and library like Compose, Material3, Modularization
  • Our CEO has development experience and wants to create an engineer friendly environment

Tech stack

  • Language: Kotlin
  • IDE: Android Studio
  • Architecture: App Architecture (MVVM), Clean Architecture, Modularization
  • DI: Hilt
  • Kotlin: Flow, Coroutine, Serialization
  • Design: In-house design on Compose Material3 (Moving from Material2)
  • Other Tools: GitHub Actions, Firebase Crashlytics, Jira / Confluence, Slack, Figma, AWS


  • Design (architecture), develop, test, and deliver SpeakBuddy app
  • Support the members inside and outside Android team
  • Work with design, backend, iOS, growth & other teams
  • Check, discuss, and install new & useful libraries / technologies
  • Find and fix bugs from analytics tools or/and testing


  • 3+ years of Android & Kotlin development, or equivalent skills
  • Experience or understandings of App Architecture, MVVM, and unit testings
  • Experience troubleshooting complex applications and data structure
  • Knowledge and understanding about testing
  • Motivation to learn Japanese (current Japanese skill is not required)

Nice to haves

While not specifically required, tell us if you have any of the following.

  • Experience developing a in-house product or having equivalent ownership mindset
  • Experience releasing an app on Google Play Console
  • Experience of the latest Android development (Jetpack Compose, Kotlinx, etc)
  • Knowledge and experience of a feature / app / system with voice recognition
  • Knowledge and experience of UI testing
  • Strong knowledge of Material Design (Material 3, especially)
  • Japanese ability


5.5 to 10 million JPY annually.

Hiring Process

  1. 1

    Casual interview

  2. 2

    Coding challenge

  3. 3

    Interviews(3 times)

Meet SpeakBUDDY's Developers

Patrick Tyler started his career as a software engineer in Europe, before taking a sabbatical to explore Japan and teach English. Seven years later he’s still here, and now works as a backend software developer at SpeakBUDDY.

Read his story...

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