Backend Developer (Java)

Rakuten Viber is one of the most popular and downloaded apps worldwide, focused on making people’s lives easier by enabling meaningful connections. They have a global engineering team dedicated to creating tools for safe, convenient, and fun communication for millions of users. The work involves using microservices architecture and cutting-edge technologies to influence the lives of millions.

• Minimum 4 years experience as a Backend Developer, including at least 2 years with Java.
• Advanced knowledge of Java, including frameworks and libraries.
• Experience with asynchronous and/or reactive Java frameworks (e.g., Vertx, Rxjava, Akka).
• Advanced knowledge of unit testing frameworks and mocking.
• Knowledge of cloud technologies.
• Experience using AI tools to improve productivity and quality.
• Experience with large scale NoSQL databases (e.g., Couchbase, MongoDB).
• Experience with microservices development using Docker and Kubernetes.
• Experience with Agile methodology.
• Fluent written and spoken English.
• Excellent communication skills.
• Higher technical education.
• Availability to work hybrid, at least three days a week in the office.

Nice to have:

• Knowledge of Javascript and web UI technologies.
• Experience with other server-side languages such as Python.
• Experience working with remote teams.

• Plan, design, develop, and maintain Java high-availability applications capable of handling high volume and low latency.
• Define application objectives and functionality.
• Ensure application designs align with business goals.
• Support continuous improvement by investigating alternatives and technologies, and presenting for architectural review.
• Collaborate closely with Product and Architects teams on mission-critical systems within a motivated team.