Viber interview process & guide 2026
Everything we know about interviewing at Viber: the process stage by stage and what each round tests.
- 1Initial screening
- 2Technical interviews
- 3HR wrap-up and final interviews
Interviewing at Viber
You go through a mix of HR screening and technical interviews, and the technical side is the centerpiece. Reports explicitly mention technical interviews with team members for technical skills and problem-solving, plus deeper discussion that can include DevOps practices and problem-solving.
What they test is strongly weighted toward engineering fundamentals plus their data and advertising domain. Across the extracted topics, Linux, QA Engineering, Mobile Engineering (general), Algorithms (Data Structures & Algorithms), Data Science concepts, and contextual advertising efficiency appear at the very top (percentile 100), with Data Structures, Contextual Targeting concepts, and AWK also very prominent.
Based on candidate reports, the loop includes several screening and interview steps, including initial screening by HR, at least one additional HR wrap-up interview, and technical interviews. However, there is no reported offer rate in the data you were given, so you cannot rely on these reports to predict whether you will get an offer.
Your interview topics are unusually concentrated in Linux, QA, mobile engineering, and contextual advertising and measurement, with algorithms and data structures also heavily represented. If you prepare only generic backend or generic ML, you are likely to miss the domain-specific emphasis shown in the topic distribution.
How hard is the Viber interview?
Aggregated from 80 interview experiencesAbout 1 in 2 candidates with a known outcome convert.
The interview process, end to end
3 rounds · based on 80 candidate reports- 1Initial screening
You start with an HR-led initial screening to assess basic qualifications and role fit. Some reports also describe an initial screening or call to assess your experience and fit, including for DevOps roles.
- 2Technical interviews
You complete a series of technical interviews focused on technical skills and problem-solving. Reports also mention deeper interviews that may cover DevOps practices and problem-solving abilities.
- 3HR wrap-up and final interviews
You may have a final HR interview to evaluate overall fit and discuss next steps. Reports also describe a final interview that can include a data team assessment and potentially senior leadership evaluation, along with behavioral and cross-functional collaboration discussions in some loops.
What Viber actually tests for
How prominent each skill is across reported loopsFind the guide for your role
This is your next step: open the guide for the role you are interviewing for. Each one carries the questions Viber interviewers actually ask that position, the loop structure, and pay by level.
What separates offers from rejections
Patterns from candidates who got offers, and the mistakes that most often sink a loop.
Do this
- Practice Linux and command-line fundamentals, because Linux is at the top of the reported technical topic distribution (percentile 100) and command-line tools are also highly prominent (percentile 90).
- Be ready to discuss data structures and algorithms concepts and apply them to problems, since Algorithms and Data Structures are both the most prominent topics (percentile 100 and 96).
- Prepare for QA and testing questions, including how you approach quality assurance and problem-solving in a technical setting, because QA Engineering is at percentile 100.
- Brush up on contextual targeting and measurement of contextual advertising efficiency, including the basic ML concepts that show up in the data, since both contextual targeting concepts (95) and measurement of contextual advertising efficiency (100) are highly prominent.
Avoid this
- Do not assume the interviews are purely behavioral or purely software engineering fundamentals. The topic data shows QA Engineering, mobile engineering, Linux, and contextual advertising measurement are central (all percentile 100).
- Do not skip DevOps related depth, since reports mention deeper technical discussion that can include DevOps practices and problem-solving abilities.
- Do not focus only on one language or stack without broader coverage. Golang (percentile 93) is prominent, but the topics also cover Linux, command-line tools, AWK (95), and system design patterns like monolith to microservices migration (89).
- Do not ignore system design themes. Monolith to microservices migration is highly prominent (percentile 89), and that kind of architecture discussion can appear in your loop.
Viber interview FAQ
Answered from real candidate and workplace dataHow hard are the interviews, based on the reports?
Candidate reports show 21.5% easy, 56.9% medium, and 21.5% hard, with 0.0% very hard. Use that distribution to guide your preparation effort toward the areas that come up most often in the hard and medium buckets.
What is the offer rate here?
The data provided lists an offer rate of 0.0%, but it does not explain whether this is a data artifact, selection effect, or a true outcome. Treat it as not predictive based on the information you have.
How long is the process and what are the steps?
The reports list multiple steps, including initial screening by HR, additional HR interviews, and technical interviews. The supplied data does not provide time durations for these steps, so you should plan for a multi-step loop rather than a single assessment.
What should I prioritize most in my technical prep?
Prioritize Linux and command-line skills (Linux at percentile 100, command-line tools at percentile 90), QA Engineering (percentile 100), and core algorithms and data structures (Algorithms percentile 100, Data Structures percentile 96). Then prepare contextual targeting and measurement of contextual advertising efficiency (95 and 100), plus Data Science concepts (percentile 100).
Do they test DevOps and system design too?
Yes. Reports mention deeper technical interviews that can include DevOps practices and problem-solving. They also include system design coverage via topics like monolith to microservices migration (percentile 89).
If I do not pass, can I reapply?
The provided data does not mention a reapplication policy. You would need to check directly with the recruiter or hiring team for their rules.
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Ready for your Viber interview?
Practice the exact questions from this guide with AI feedback, and walk into your loop knowing what to expect.