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.

Planning, designing, developing and maintaining Java high-availability applications that can be high-volume and low-latency
Define application objectives and functionality
Ensure application designs conform with business goals
Support continuous improvement, investigating alternatives and technologies, and presenting for architectural review
Work in a highly motivated team, closely with Product and Architects teams on large mission-critical systems.

7 and more years of experience in server-side development using Java
Advanced knowledge of Java, from frameworks to libraries. Experience in async and/or reactive java frameworks (such as vertx, rxjava, akka)
Advanced knowledge of unit testing frameworks and mocking
Knowledge of cloud technologies
Familiar with C++
Experience with large scale NoSQL database (such as Couchbase, MongoDB)
Experience with microservices development based on docker and Kubernetes
Experience with Agile methodology
Striving for new knowledge and skill improvement
Fluent in written and spoken English (interviews in English)
Excellent oral and written communication skills
Higher technical education.

Advanced knowledge of C++
Experience with other server-side languages such as node.js, go, python.