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Director of Architecture

Engineering, Ramat Gan, Israel (Hybrid), October 10 2021


Viber is one of the most popular apps in the world and the most downloaded app that came out of the start-up nation. Working at Viber provides the unique opportunity to influence hundreds of millions of people with our messaging app.

We’re looking for a highly motivated Director of Architecture that will head our growing team of elite architects that provide solutions, design, POC’s and guidance for all of Viber’s R&D teams. This is a highly influential senior role that has a significant impact on the technological decisions and roadmap of the company.

Viber services are all cloud-native and utilize the latest cutting-edge cloud services. As the Director of Architecture, you will have a huge influence (and responsibility) over a planetary scale service spread across thousands of servers around the globe generating petabytes of data, utilizing NoSQL databases performing millions of operations per second.

*We’re implementing a hybrid work-model:)


  • Manage a team of architects, including hiring, training, mentoring, and task management, alongside hands-on architecture
  • Be responsible for the team’s professional knowledge and level, design quality in all aspects
  • Coordinate, design, and document complex inter-team R&D projects
  • Collaborate with dev teams, product, DevOps, IT, and security specialists to ensure solutions provide optimal architecture, scale, high availability, security, and cost optimization.
  • Plan and build POCs and solutions to analyze complex technical and customer requirements and to determine appropriate solutions as necessary
  • Research, design, and advocate new technologies, cloud services, and architectures that will support the continued requirements of the organization, business partners, and vendors
  • Function as a technical expert, technical advisor, and technical influencer
  • Manage multiple priorities and tasks in a dynamic work environment


  • 2+ years as a senior manager (CTO, R&D group manager, Chief Architect or Director of Architecture)
  • 5+ years as a solutions/system/cloud/enterprise architect
  • 8+ years experience in software development
  • Proven experience with cloud environments (AWS/GCP/Azure)
  • Experience in complex large scale systems
  • Experience with NoSQL databases
  • Experience with big data technologies & pipelines
  • Experience with microservices, K8s & CI/CD pipelines
  • Excellent written and verbal communication skills in English
  • An analytical mind with excellent problem-solving abilities
  • Self-starter, with the ability to work independently while being accountable
  • Strong interpersonal and customer care skills
  • A Bachelor’s or Master’s degree in Engineering, Computer Science, Information Systems, or other related fields; or equivalent work experience


  • Knowledge of multiple programming languages (Java, C++, Node.js, Python, etc.)
  • Couchbase NoSQL database 
  • Serverless technologies
  • VoIP/WebRTC technologies
  • Deep understanding of Linux network and OS internals
  • Understanding of Machine Learning and Deep Learning concepts and technology
  • In-depth knowledge of cryptography and security


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.