Kotlin Multiplatform Mobile Engineer

  • Remote OK - Anywhere in Japan
  • Full-time
  • January 16, 2024
6,500,000 - 14,000,000 JPY /yr
Apply from Anywhere 👍
Relocation to Japan 👍
(Overseas visa sponsorship supported)
Language Requirements
Japanese: Not Required 👍
English: Business Level
Minimum Experience
Mid-level or above

Job Description

PayPay is looking for a Kotlin Multiplatform Mobile Engineer to build and maintain high quality and robust SDKs for development teams.

Main Responsibilities

  • Work closely with our App platform team to build and maintain core business logic SDKs
  • Support integrations with our Android and iOS feature teams
  • Active on improvement at platform/structure level
  • Define and follow coding standards, architecture principles, code reviews, build processes and testing
  • Promote collaboration by mentoring and sharing knowledge

Tech Stack

| Kotlin, Gradle

| Ktor, Coroutines, SQLDelight

| Github, Android Studio

| Firebase, AppsFlyer

| Slack, Zoom


  • Deep understanding of modern mobile development
  • Strong in Object Oriented design and Kotlin
  • Experience with the Android development
  • Strong passion for code quality and are not allergic to test cases
  • Familiarity with integration of Rest API
  • Strong sense of ownership
  • At least one mobile app you can show off in the interview
  • At least 3-5 years of professional experience.

Preferred Qualifications

  • More interest in KMM/platform work rather than feature development
  • At least one year of experience in KMM
  • Experience with GA/CI/CD tool(e.g. Bitrise)
  • Ability to develop SDKs while conducting unit tests
  • Knowledge of performance optimization
  • Ability to communicate with platform members and other development team in English
  • Familiarity with Agile development
  • Experience integrating and development payment service

PayPay 5 senses

Please refer PayPay 5 senses to learn what we value at work.



また、働き方に関してもWFA(Working From Anywhere)制度など、新しい人事制度を採り入れてます。当社は基本的にフルリモートでの勤務となる為、勤務場所や現在の居住地は問いません。 地方に暮らしながらも国際都市水準の給料・福利厚生を得ながら、世界レベルの仲間と仕事をする。 そんな働き方もPayPayでは実現できます。

【言語要件】日本語 / 英語どちらかが流暢(ビジネスレベル以上)であれば応募いただけます!


  • PayPayはパンデミック期間中、従業員の安全を確保するためにリモートワークへの移行を進めており、パンデミックが治まった後もこれを継続していきます。

  • 日本への移住を希望する方の応募は受け付けていますが、渡航規制の関係で移住の時期を明確にすることが難しい状況です。内定が出た場合は、在留資格認定証明書の申請を行いますので、国境が開通すればビザの取得が容易になりますし、遠隔地からの契約など、特別な配慮をすることも可能です。

  • COVID-19が落ち着き、ビザ発給の準備が整うまでは、海外からリモートで仕事を始めることができます。

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Kotlin Multiplatform Mobile Engineer at PayPay