Rakuten Viber
Rakuten Viber
201 – 500 Employees
ConsultingeCommerceMarketing
Rakuten Viber is a global communication platform that helps businesses reach customers through messaging, verification, and interactive campaigns. Its business offering includes Viber Verification and SecurePlus Messages, enabling more secure customer communications, while the platform’s super app features support brand engagement and direct consumer relationships across marketing and e-commerce use cases.

Senior Full Stack Engineer, Node.js – Warsaw Hybrid

Join Rakuten Viber to build high-traffic Node.js and Java microservices. Develop secure, low-latency features for systems processing more than one billion messages each day.

Description

  • Plan, design, develop, and maintain highly available, high-volume, low-latency applications
  • Define application goals and functional requirements
  • Align application designs with business objectives
  • Evaluate alternative technologies and contribute proposals for architectural review
  • Collaborate with Product and Architecture teams on large-scale, mission-critical systems
  • Debug, optimize, and tune performance across the technology stack
  • Build and maintain dozens of scalable services processing more than one billion messages daily
  • Deliver features, improve performance, protect data, and resolve technical challenges within a Node.js and Java microservices architecture

Requirements

  • At least seven years of full-stack development experience, including four or more years focused on Node.js
  • Strong command of JavaScript and TypeScript
  • Experience with TypeScript-first frameworks such as NestJS, Fastify, or Next.js
  • Professional experience developing with Java
  • Track record of building and scaling enterprise production systems using microservices
  • Working knowledge of at least one major frontend framework, including React or Angular
  • Familiarity with relational and NoSQL databases
  • Experience designing and integrating REST APIs, including effective caching approaches
  • Hands-on experience with CI/CD pipelines and Docker-based containerization
  • Experience creating and running thorough unit and integration tests
  • Practical experience applying Agile methodologies in a fast-paced setting
  • Strong analytical, collaboration, and communication skills
  • Fluent written and spoken English

Benefits

  • No specific benefits, perks, or additional compensation are stated

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