As a DevOps Engineer at Viber, you play a crucial role in bridging the gap between software development and IT operations, ensuring that the development, deployment, and maintenance of applications and systems are seamless and efficient. The impact of this position is significant: you will contribute to the scalability, reliability, and performance of Viber's messaging and communication services, which serve millions of users worldwide. By implementing best practices in continuous integration, deployment, and infrastructure management, you ensure that Viber can innovate rapidly while maintaining high service quality.

This role is particularly exciting due to the scale and complexity of Viber’s infrastructure, which includes real-time messaging, voice, and video services. You will work with cross-functional teams, addressing challenges related to system design, automation, and monitoring. Your contributions directly influence user experience and business outcomes, making this a strategically vital position within Viber.

In preparing for your interview, expect a variety of questions that assess your technical knowledge, problem-solving abilities, and cultural fit within Viber. The questions outlined below are representative of what you might encounter and are drawn from various experiences shared online. They are designed to illustrate patterns in the interview process rather than serve as a memorization list.

Technical / Domain Questions

This category tests your technical expertise related to DevOps practices and tools.

• Explain the differences between continuous integration, continuous delivery, and continuous deployment.
• How do you manage configuration drift in your environments?

Preparation for your interviews at Viber should involve a thorough understanding of both the technical and cultural aspects of the role. You should be ready to demonstrate your knowledge, approach to problem-solving, and capacity to collaborate effectively across teams.

Role-related knowledge – This involves a deep understanding of DevOps principles, tools, and practices. Interviewers will evaluate your familiarity with relevant technologies and your ability to apply them in real-world scenarios.

Problem-solving ability – You will be assessed on how you approach complex problems. Think critically about your past experiences and be prepared to explain your thought process.

Leadership – As a DevOps Engineer, your ability to influence and communicate with team members is essential. Showcase instances where you've led initiatives or improved team dynamics.

Culture fit / values – Viber values collaboration, innovation, and a user-focused mindset. Be prepared to illustrate how your values align with Viber's mission and culture.

The interview process for a DevOps Engineer at Viber typically begins with a screening call, where your experience and fit for the role are assessed. Subsequently, you may have one or more technical interviews that dive deeper into your knowledge of DevOps practices, system design, and problem-solving abilities. Expect a collaborative atmosphere where interviewers may engage in discussions rather than purely Q&A formats.

Viber emphasizes a holistic approach to interviews, focusing not just on technical skills but also on how candidates align with their culture and values. You may encounter a mix of behavioral and technical questions throughout the process to gauge your overall suitability.

This visual timeline illustrates the stages you can expect during the interview process, from initial screening to technical interviews and final assessments. Use this guide to manage your preparation effectively and ensure you are ready for each stage.

Understanding the key areas of evaluation will significantly enhance your chances of success during the interview process.

Role-related Knowledge

This area is fundamental, as it encompasses your technical expertise and familiarity with DevOps tools and methodologies. Interviewers look for candidates who can demonstrate a solid grasp of continuous integration, deployment, and system monitoring.

• Cloud Platforms – Proficiency with AWS, Azure, or Google Cloud.
• Containerization – Experience with Docker and orchestration tools like Kubernetes.
• CI/CD Tools – Familiarity with Jenkins, GitLab CI/CD, or similar platforms.
• Infrastructure as Code – Knowledge of Terraform or Ansible.

Strong candidates will be able to explain their hands-on experience with these technologies and discuss how they have leveraged them to solve problems.

Problem-solving Skills

This evaluation area focuses on your analytical thinking and your approach to tackling challenges. Interviewers are interested in how you break down complex issues and your methodology for arriving at solutions.

• Analytical Approach – Describe how you would analyze a performance bottleneck.
• Troubleshooting – Discuss a specific incident where you resolved a critical issue.
• Innovative Solutions – Share an example of a creative solution you implemented.

Candidates should be prepared to articulate their thought processes clearly and provide examples that showcase their problem-solving abilities.

Leadership and Collaboration

Effective communication and leadership are vital in a DevOps environment. Interviewers will assess your ability to work within a team and influence others positively.

• Team Dynamics – Discuss how you foster collaboration within teams.
• Conflict Resolution – Provide examples of how you navigated team disagreements.
• Mentorship – If applicable, describe experiences where you mentored others or led initiatives.

Strong candidates will demonstrate emotional intelligence and the ability to motivate and inspire their peers.

Cultural Fit

Viber seeks individuals who align with its core values and culture. Be prepared to discuss how your personal values resonate with Viber's mission.

• User Focus – Illustrate how you have prioritized user experience in your work.
• Adaptability – Share instances where you've thrived in a dynamic environment.
• Continuous Improvement – Describe how you actively seek feedback and learn from experiences.

Candidates should reflect on their experiences and articulate how they align with Viber's culture.

Advanced Concepts

While not always covered, showcasing knowledge in advanced areas can differentiate you from other candidates.

• Serverless Architectures – Explain your understanding and experience with serverless computing.
• Monitoring and Observability – Discuss tools and practices you use for operational visibility.
• Security in DevOps – Outline practices for integrating security into the DevOps lifecycle.

Example questions or scenarios:

• "How would you implement a serverless function for a specific use case?"
• "What metrics do you consider essential for monitoring application health?"
• "Discuss how you would secure a CI/CD pipeline."