Android Engineer

Remote OK - Anywhere in Japan
Full-time
July 18, 2025

PayPay is looking for an Android Engineer to work on our payment product to deliver the best payment experience for our Japanese customers.

Team Missions

Grow finance mobile service as user's first touch point of PayPay.
Actively follow new technology and make our app more convenient using it.
Build new features rapidly along with a variety of technical approach, native OS / KMM / own SDK etc and deliver with high quality.

Main Responsibilities

Work closely with our product team to customize the payment experience
Prototype new and redesign features
Focus on UI/UX design principles and product-driven development
Work with an elite and focused team of app developers

Tech Stack

Kotlin
Simple Stack, RxJava, Koin, Picasso, CardIO, Moshi, Okhttp, Mapbox, Lottie
Github, Android Studio
Firebase, AppsFlyer
Figma
Slack, Zoom

Qualifications

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 6 years of professional experience.

Preferred Qualifications

Experience with CI/CD tool(e.g. Bitrise)
Ability to develop features while conducting unit tests
Knowledge of performance optimization
Ability to communicate with product members and other development team in English
Familiarity with Agile development
Experience integrating and development payment service

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About PayPay

PayPay, a FinTech company that has achieved more than 69M users (as of May 2025) within around six years since its launch in 2018, is rapidly expanding its business scale as a payment platform used by approximately one out of every two smartphone users in Japan.

The company has a diverse team of professionals from more than 50 countries and is building a world-class engineering organization.

PayPay's biggest competitor is "cash". They are seeking people who can accept this challenge positively, brush up on the product at a tremendous speed that other companies could never achieve, and who are passionate about promoting and spreading such a financial life platform in a short time along with professionalism.

Japanese Language Policy
At PayPay, there is a mixture of Japanese and English spoken. Around 80% of their product team’s discussions happen in English, and they have technical interpreters and translators on staff to facilitate any translation necessary. Some members can speak both English and Japanese, but some can only speak either English or Japanese.

PayPay doesn’t have an official shared language, but in practice English tends to be the primary language used for internal communications and technical discussions like code reviews.

Instead of requiring that everyone be able to speak a specific language, PayPay expects an ability to communicate with mutual respect and a drive to ensure that you’re understood. The product team values proactive communication highly.
Visa Sponsorship
PayPay sponsors visas for applicants from overseas.
Paid Leave
- Days Off: Saturdays and Sundays. National holidays. Year-end and New Year holidays.
- Holidays: Annual paid leave, congratulatory or condolence leave, maternity leave and etc.
Benefits
🌎 Translation/interpretation support (EN<>JP)

🧡 Support for translation or other administrative tasks in Japanese

👍 Support from bilingual PIC for engineers

🇯🇵 Free Japanese lessons on company time

💻 PC and phone are given (based on the company’s regulations)

👩‍🎓 Training Program: We have various training programs for different kinds of needs

💜 Social security/insurance benefits included

💛 Defined contribution pension system (TBC)

🏥 Health insurance

🚃 Transportation coverage (up to ¥150,000/mo)
Engineer Interview Process
PayPay's Hiring process are as below:
- Application Review (English CV is required)
- Coding Test or Take Home Assignment (only applied to required positions)
- 3-4 Interviews (including both technical and behavioral interviews)
- Offer Meeting
Remote Work
PayPay is committed to maintaining a "Day 1" mindset, bringing to life visions of the future that no one else can even imagine. At PayPay, we provide an environment where everyone can deliver outstanding performance as professionals, through a flexible work style that includes remote and office.
Work style
- Super Flex Time with no core time
- In principle, from 9:00am-5:45pm (actual working hours: 7h45m + 1h break)