Backend Developer (Java)

At Viber, we connect people–no matter who they are, or where they are from. 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 a super-app and an all-in-one platform for everything communications-based, with many different business and financial services, including payment solutions for users to make transfers, purchases and much more!

We’re looking for a highly experienced Backend Developer to join our team! If you are curious to work with large scale data in real-time, committed to translating insights into action, want new challenges daily and impact the lives of millions of users globally, this role is for you.

Responsibilities
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

Requirements
7+ 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
Advantages
Advanced knowledge of C++
Experience with other server-side languages such as node.js, go, python