Senior Android Engineer - Travel Development Department (TDD)

Rakuten Group, Inc.

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Tokyo, Japan Until 8/25/2026 6+ years exp H-1B sponsor history First posted June 26, 2026 Last posted June 26, 2026
Job description

Job Description:

Department Overview

Rakuten Travel is a leading online travel service in Japan, dedicated to “Making People Happy with Travel”.

https://travel.rakuten.com/

Since our founding in 1997, we have consistently led the industry, challenging the norms and fostering innovation. With growing aspirations to expand beyond borders as a Global Innovation Company, we are not confined to Japan but continue to strive daily to become the world's premier travel reservation service.

At the forefront of the Commerce & Marketing Company, Travel Development Department (TDD) is distinctive for overseeing the entire spectrum of Rakuten Travel's development and operations. We primarily focus on the following key areas:

1. Globalization of Rakuten Travel to compete in global markets

2. Continuous improvement and strengthening Rakuten Travel’s presence in Japan to increase customer satisfaction

We are seeking like-minded individuals who resonate with our purpose. Join us at Rakuten Travel, propose new forms of travel to people around the world, and strive to be pioneers shaping the future of travel. Your passion and creativity will breathe new life into the travel industry, filled with infinite possibilities. We eagerly await your application and potentially invite you to take on challenges in a diverse environment in collaboration with new peers.

Position:

Position Details

Responsibilities:

- Collaborate closely with Product Managers, UI/UX Designers, and QA Engineers to design and implement new features.

- Partner with API developers and fellow UI engineers to develop and maintain a robust, scalable system for our large user base.

- Research, propose, and contribute to the continuous evolution of the technology powering our Android applications.

- Stay up to date with the latest Android technologies and apply them to enhance our products.

- Continuously refine technologies, processes, and team collaboration to identify and implement more effective solutions.

Mandatory Qualifications:

- B.S. or M.S. in Computer Science or equivalent degree

- Strong ability to develop Android apps using Kotlin with more than 6 years' experience

- Strong understanding of the latest features and development best practices for the Android platform

- Understanding of Data Binding and Live data

- Understanding of Android Architecture Components such as ViewModels, Activities, Fragments, Navigation, Compose, Flow, Dependency Injection with Hilt or Dagger

- Good grasp of functional and reactive programming

- Hands on tools (ie. Studio, IntelliJ, Jenkins/Bitrise, Gradle, git)

- Knowledge of Third-party libraries, KTX, Retrofit, Glide, Coroutine, Google Map

- Strong communication skills, a positive attitude, and empathy

- Strong motivation for developing product with teams

- A desire to continually improve, suggest idea for organization and teams

- Strong UX and design sensibilities

- Experience in Agile development

- Experience of writing Unit test

Desired Qualifications:

- Building CI/CD development cycle experience

- Contributing to open source

- Knowledge and Experience of travel domain

- Experience working for consumer facing product

- Experience of internationalization development

- Knowledge of Material design guidelines and available components

- Knowledge of automated testing

- Experience in project with multiple modules and flavours

- Experience using Gradle Build system

#engineer #applicationsengineer #commerce #RakutenTravel #Java #Kotlin

About this role

Summary

Develop and maintain Android apps; collaborate on features and technology evolution.

Job title

Senior Android Engineer - Travel Development Department (TDD)

Experience level

6+ years

Minimum experience

6+ years exp

Industry

travel

Location requirements

Tokyo, Japan; remote not specified

Salary

Not specified

Visa sponsorship

H-1B sponsor history

Management role

No

Skills & keywords

Required skills

kotlinandroiddata bindinglive dataviewmodelsactivitiesfragmentsnavigationcomposeflowhiltdaggerfunctional programmingreactive programmingstudiointellijjenkinsbitrisegradlegitthird-party librariesKTXretrofitglidecoroutinegoogle map

Preferred skills

ci/cdopen sourcetravel domaininternationalizationmaterial designautomated testingmulti-module projectsgradle

Specializations

androidkotlinreactive programmingarchitecture componentsCI/CD
Locations

Structured locations inferred from the posting.

Tokyo, Japan

On-site City