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Backend Team Lead

R&D, Warsaw, Poland (hybrid)

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. 

We are a global team of engineers dedicated to creating the best tools to ensure safe, convenient communication for millions of users worldwide. Our culture is built on innovation, teamwork, and a commitment to excellence.

We’re looking for an experienced, highly motivated Backend Team Lead to join our Ads group and lead a team of talented senior backend developers responsible for developing and maintaining a high-traffic, low latency microservices-based system.

Responsibilities

  • Lead, mentor, manage and inspire a diverse agile team of backend developers across different locations, alongside hands-on coding
  • Actively participate in the design, development, and maintenance of backend systems and applications while analyzing business requirements to create scalable, high-performing, and testable solutions
  • Collaborate closely with product managers, client developers, scrum masters, and other stakeholders to deliver high-quality solutions
  • Effectively manage and integrate the contributions of a full-stack web developer within the backend team’s scope.

Requirements

  • At least 3 years of experience as a team leader
  • At least 8 years of hands-on experience in server-side development
  • At least 2 years of hands-on experience with Go lang
  • Proven experience in developing large-scale systems using cloud services and NoSQL databases (such as GCP orand AWS, Couchbase) 
  • Experience with microservices architecture, Docker, and container orchestration (e.g., Kubernetes) & CI/CD
  • Experience with Agile methodology
  • Ability to quickly understand complex systems and drive solutions.
  • Fluent in written and spoken English
  • Excellent spoken and written communication skills

Advantages

  • Direct experience with Ad Tech platforms (DSPs, SSPs, Ad Exchanges).
  • Experience with Vue.js or similar frontend frameworks
  • Experience with Java
  • Familiarity with observability tools and practices.
  • Experience working with remote teams
  • Advanced knowledge of unit testing frameworks and mocking
  • B.Sc. in Computer Science or equivalent
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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