Android App Development Engineer

Date PostedMay 28, 2026LocationChiyoda, Tokyo, JapanCompanyMultinational talent welcome! @TokyoSalaryJPY 5500K - JPY 9000KTypeit (pc, web, unix) - web application se it (pc, web, unix) - business application se it (pc, web, unix) - mobile application engineer

Job Summary

You will be responsible for end-to-end Android application development, including requirements definition, design, implementation, and maintenance. The role involves working on health management apps and digital signage systems using Kotlin or Java. You will collaborate with cross-functional teams to integrate backend APIs and ensure high-quality UI/UX.

Responsibilities

  • End-to-end Android app development
  • Integration with backend APIs
  • UI design and feature modifications
  • Collaboration with cross-platform teams

Required Skills

  • Japanese N1 proficiency
  • Native Chinese, Korean, or Vietnamese
  • Kotlin / Java experience
  • Git and REST APIs proficiency

Job Details

Job Description ■ You will be responsible for phases of development, from requirements definition to design, implementation, testing, and operation/maintenance, primarily using Kotlin or Java, according to your skills. * Android app development for a health management app for local governments * Android app development for a digital signage reception system * Integration with backend APIs, screen UI design, and handling feature additions and modifications * Specification adjustments and integrated development with other platforms (iOS/Web) ■ Tools Used * Android Studio * Git (version control/team development) * Firebase Console (preferred) ■ Programming Languages * Kotlin (required) * HTML/CSS/JavaScript (required) * Java (preferred) * Swift (preferred) Job Requirements [Required Skills] * N1 level Japanese proficiency (ability to communicate effectively in business settings and understand specifications and design documents without difficulty) * Native level Chinese, Korean, or Vietnamese proficiency * Android app development experience (3 years or more preferred) * Native app development experience using Kotlin or Java * Development experience using Android Studio * Experience implementing integration with REST APIs * Team development experience using Git * Experience integrating with PHP or backend systems [Preferred Skills] * Documentation creation experience (specifications, design documents, test specifications, etc.) * Experience using Firebase (Authentication, Firestore, Crashlytics, etc.) * Experience using Jetpack Compose or MVVM architecture * App publishing and operation experience (including Google Play support) * Knowledge of modern UI/UX design * Experience building build and release flows using CI/CD tools Benefits & Conditions * Full-time employee (3-month probationary period) * Comprehensive social insurance, commuting allowance, qualification acquisition support system, long-service award system, company trips * Holidays: Complete two-day weekend (Saturday and Sunday), national holidays, year-end and New Year holidays, summer holidays, birthday leave, bereavement leave, annual paid leave (10-20 days), childcare and family care leave