Android Developer

6 hours ago

Warsaw, Czech Republic Rakuten Viber Full time
  • 5+ years of commercial Android development experience, with strong expertise in Java and Kotlin, demonstrating the ability to build and maintain complex applications.
  • Proven track record of implementing clean architecture patterns (MVVM/MVP/MVI) in production applications, with experience in the multi-module project organization.
  • Deep understanding of Android fundamentals and lifecycle components, with extensive experience using Android Jetpack libraries (WorkManager, Paging, ViewBinding, LiveData).
  • Strong background in Android performance optimization, including efficient use of collections and concurrent programming with both Java threading and Kotlin Coroutines/Flow.
  • Experience with dependency injection in Android applications, particularly using Dagger 2, and the ability to design scalable component architectures.
  • 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.
  • Solid understanding of mobile UX principles and ability to implement pixel-perfect designs while maintaining performance.
  • Advanced knowledge of version control with Git and build system configuration using Gradle.
  • Strong foundation in software design patterns (GoF) with practical experience in application architecture and systematic refactoring.
  • Intermediate level of spoken English, with the ability to effectively communicate in team settings.

Advantages

  • Experience in developing custom Android UI components and complex layouts.
  • Practical knowledge of ExoPlayer and media playback optimization on Android.
About

At Rakuten Viber, we connect people–no matter who they are, or where they are from. As a communication platform that connects hundreds of millions of people around the world, we know that the way people communicate changes on an almost daily basis. That’s why we dedicate ourselves to providing added value to communication — from private and group chats to audio and video calls to the ability to follow and contact brands, businesses and celebrities. Viber is an all-in-one platform for everything communications-based, and all Viber communications are protected by end-to-end encryption. Viber is part of the Rakuten Group, a world leader in e-commerce and financial services

Description

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. 

As an Android Developer, you will be responsible for design and development of Viber Android client. We offer many interesting and challenging tasks that will allow you to extend your technical abilities delivering the product of the highest quality to our users.

The ideal candidate is interested in improving our users’ experience and wants to make a positive impact in the team.

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

,[Take part in the development of Viber client for Android, Work within a big team of developers to new features production, complete proposed initiatives, contributing application improvements, Quickly gain an understanding of our clients’ requirements, technology needs and solution architecture, Collaborate with product managers and design team to develop appropriate solutions.] Requirements: Android, Java, Kotlin, Clean Architecture, MVVM, MVP, Android Jetpack, Kotlin Coroutines, Dagger, SQL, ROOM, UX, Git, Gradle, Design Patterns, Android UI, ExoPlayer

  • Android Developer @ ElevenLabs

    6 hours ago

    Remote, Warsaw, Czech Republic ElevenLabs Full time

    Who you are We're looking for exceptional individuals who combine technical excellence with ethical awareness, who are excited by hard problems and motivated by human impact. You’ll strive with us if you:  Are passionate about audio AI driven by a desire to make content universally accessible and breaking the frontiers of new tech. Are a highly...

  • Middle Android Engineer @ N-iX

    6 hours ago

    Remote, Kraków, Wrocław, Warsaw, Czech Republic N-iX Full time

    3+ years of experience in Android development, with a strong portfolio of sophisticated, widely-used apps. Collaborating with project leadership in the Pacific Time Zone (3-4 hours overlap) - fully remote possible Expertise in Kotlin and Java, MVVM architecture, and extensive experience with Android SDK, Android Studio, Jetpack Compose and other relevant...

  • Visionary Android Developer for Audio AI Innovations

    7 days ago

    Remote, Warsaw, Czech Republic ElevenLabs Full time

    We are at the forefront of a revolution in audio AI, and we're looking for a seasoned Android developer to join our team.As a key member of our mobile team, you will spearhead high-impact projects that optimize user experiences and drive engagement on our reader app. Your role will involve delivering new features, ensuring seamless integration with our...

  • Android Applications Engineer @ HUAWEI

    6 hours ago

    Warsaw, Czech Republic HUAWEI Full time

    At least 3 years of experience with Android OS Development/maintenance experience in the following areas: finance (banking, payment), social media (chats, audio/video calls), multimedia (player, gallery) Experience in 3rd party application analysis: reverse engineering (APK Tool) Good command of Java/C/C++ (standard libraries) Knowledge of Gradle/Ant/Make...

  • Android Platform Engineer @ HUAWEI

    6 hours ago

    Warsaw, Czech Republic HUAWEI Full time

    At least 2 years of experience with Android OS and application architecture Experience in the Android platform: kernel, system, applications Good command of Java/C/C++ (standard libraries) Knowledge of toolchains, cross-compilation, profilers, packaging, ADB Knowledge of Gradle/Ant/Make Build Communicative English Bachelor’s or Master’s degree in...

  • Trainee Flutter developer @ Innowise

    6 hours ago

    Warsaw, Czech Republic Innowise Full time

    English at B1 level Basic knowledge of Flutter, Dart Understanding of State Management (Bloc, Riverpod, Provider) Experience in Android or iOS development is a plus Innowise Group is an international IT company founded in 2007. We have been developing software for 15 years and have implemented more than 600 projects for clients from 30+ countries. Innowise...

  • iOS Developer @ Rakuten Viber

    6 hours ago

    Warsaw, Czech Republic Rakuten Viber Full time

    At least 5 years of production mobile software development experience Proficient in Objective-C/ Swift and iOS development Experience collaborating with multiple cross-functional teams including support, product management, developers Expert in Object-Oriented programming, algorithms, design patterns, multi-threading Experience in Unit Testing Strong...

  • Golang Developer @ Rakuten Viber

    6 hours ago

    Warsaw, Czech Republic Rakuten Viber Full time

    4+ years of experience in server-side development using Go language Familiarity with Google Cloud Platform (GCP) or AWS Conversational level of English Advanced knowledge of unit testing frameworks and mocking Experience with microservices development based on docker Experience of implementation and maintenance of CI/CD pipelines Experience with Agile...

  • Mobile Manual QA Engineer

    6 hours ago

    Warsaw, Czech Republic NCube Full time

    We will not be able to hire candidates without expreience in Mobile testing Must have skills: 3+ years of total experience in Software Testing Experience in Mobile Testing (iOS, Android) Strong experience in Functional Testing Experience in the following types of testing is also needed — end-to-end, integration, installation, regression, smoke...