This position is closed and is no longer accepting applications.

Android Engineer


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

About SpeakBUDDY

SpeakBUDDY Tokyo

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

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 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)

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