Android Developer (fintech)

Rakuten Viber

Poland · Full-time · Not Applicable

Rakuten Viber is one of the most popular and downloaded apps in the world. Working with us provides a unique opportunity to influence hundreds of millions of our users and to be part of the journey that makes us a super-app. Our mission is to make people’s lives easier by enabling meaningful connections, from precious moments with family and friends, through managing business relationships to pursuing their passions.

Full time job. We’re working in hybrid mode (from home and the office).

Responsibilities:

Participate in the development of Viber Android client
Collaborate with a large team of developers to deliver new features and enhance existing ones efficiently
Quickly gain an understanding of our clients’ requirements and technological needs for high-quality delivery
Work closely with product managers, the design team, and other cross-functional teams to design appropriate solutions

Requirements:

5+ years of commercial Android development experience, with strong expertise in Kotlin and Java
Solid understanding of Collections and Concurrency/Multithreading in Java, as well as Kotlin Coroutines and Flow
Deep understanding of Android fundamentals and lifecycle components, with extensive experience using Android Jetpack libraries (WorkManager, Paging, ViewBinding, LiveData).
Experience with dependency injection in Android applications, particularly using Dagger 2, and the ability to design scalable component architectures.
Proven track record of implementing clean architecture patterns (MVVM/MVP/MVI) in production applications, with experience in the multi-module project organization.
Demonstrated expertise in database design, SQL optimization, and implementation using Room.
Proven experience in writing and maintaining unit tests, with a strong focus on code quality and best practices.
Thorough understanding of mobile application design principles and UX.
Intermediate spoken and written English for effective communication within the team.

Advantages:

Experience in developing custom Android UI components and complex layouts.

Key Skills

Ranked by relevance

android kotlin java sql ui

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Poland

Fast-growing Central European IT hub

Posted: May 06, 2025
Type: Full-time
Level: Not Applicable
Location: Warsaw
Company: Rakuten Viber

Industries

Software Development