Rakuten Viber
Open positions
Product Manager, Fintech - Viber Pay
Product Manager owning the strategy, roadmap, and end-to-end execution of Viber Pay, Rakuten Viber's payments/fintech suite, based in London. Day to day: leading a cross-functional squad, using experimentation and analytics to move KPIs, and building seamless B2C payment flows that meet KYC, fraud, and compliance needs.
Automation QA Engineer (Mobile)
Automation QA Engineer builds and maintains mobile test automation (Appium with Java, Page Object Model) for Rakuten Viber's iOS and Android apps, turning smoke suites into release-blocking regression suites, integrating them into GitLab CI with device clouds, and training QA engineers toward automation-first.
Automation QA Engineer (Backend)
Backend automation QA engineer at Rakuten Viber (Warsaw) building and maintaining Java-based test automation for backend services of a messaging super-app — growing smoke suites into staging gates, partnering with developers on E2E verification, and integrating suites into CI/CD. Core stack: Java, Selenide/Selenium, TestNG, Maven, RestAssured, Allure, Docker/Selenoid, GitLab CI.
iOS RTC Software Engineer
iOS engineer on Rakuten Viber's cross-platform RTC team in Warsaw, developing and optimizing Viber calls on iOS: WebRTC library integration, signaling protocol work, media capture/processing, and CPU/traffic/battery optimization. Core stack: Swift, Objective-C, WebRTC, CallKit, C++.
Android Developer
Android Developer at Rakuten Viber building and maintaining the Viber super-app for millions of users using Java, Kotlin, and Android Jetpack components.