PubNub interview prep. 9 likely questions.
The process at PubNub, what each stage actually tests, and how candidates prep. Real questions where we have them, likely questions where we don't.
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[01] BY THE NUMBERS
Headline facts before you prep.
Pulled straight from PubNub's career page and public data sources. Tap any cell for the full breakdown.
Full PubNub company profile[02] INTERVIEW PROCESS
Standard software engineering loop at PubNub.
The stages below describe the typical SWE loop. Product, Design, and Data loops differ; pick a role to see how it changes, or jump straight to real questions reported for that role.
01Recruiter Screen
30 min
Recruiter Screen
30 minInitial call to discuss your background, the role, and logistics.
- Research the company and role thoroughly
- Prepare your elevator pitch
- Ask about the interview process and timeline
02Technical Interview
45-60 min
Technical Interview
45-60 minCoding and/or system design questions relevant to the role.
- Practice on LeetCode or similar platforms
- Think out loud and communicate your approach
- Ask clarifying questions before starting
03Behavioral Interview
45 min
Behavioral Interview
45 minQuestions about your past experiences, teamwork, and problem-solving.
- Prepare STAR-format stories
- Focus on specific examples with measurable outcomes
- Show self-awareness about mistakes and learnings
[03] REAL QUESTIONS
Likely questions for PubNub.
9 likely questions inferred from PubNub's open roles and company profile.
Software Engineering
7 questions
Software Engineering
7 questionsDescribe a situation where you had to lead a team through a challenging technical problem. What was your approach, and what was the outcome?
Can you describe a time when you had to troubleshoot a complex backend system issue? What steps did you take to identify and resolve the problem?
Have you ever implemented a new technology or process in your team? What was the motivation behind it, and how did you manage the change?
What strategies would you use to ensure low latency in real-time messaging systems, especially when scaling to handle trillions of messages?
Can you explain how you would design an AI capability layer for a real-time data processing system? What key factors would you consider?
What is your experience with building and maintaining microservices architectures? Can you provide an example of how you approached this in a previous role?
How do you approach optimizing database performance in a system that requires real-time data updates? What tools or techniques do you prefer?
Other Roles
2 questions
Other Roles
2 questionsWhat interests you about working at PubNub, and how do you see your skills contributing to our mission of powering real-time experiences?
How do you align your personal values with the mission and culture of a company like PubNub? What aspects of our work resonate with you the most?
How to answer these: the STAR method
Use the STAR method: describe the Situation, the Task you faced, the specific Action you took, and the measurable Result. Aim for 60-90 seconds with one concrete metric. Practice it out loud before the interview so it flows naturally; the same structure works for every question above.
[04] PEOPLE ALSO ASK
Common questions about PubNub interviews.
Does PubNub sponsor H1B visas?
PubNub does not currently advertise any information regarding visa sponsorship for international candidates. If you are seeking employment and require visa support, you may want to inquire directly during the interview process. Generally, tech companies may have varying policies on this based on their hiring needs and candidate qualifications.
What is the average salary at PubNub?
The average salary range for positions at PubNub is between $100,500 and $107,500, based on the current job postings. This figure reflects the compensation for roles such as the Senior Backend Engineer and Senior Solutions Architect. When considering a position, it's important to evaluate how this salary range aligns with your financial expectations and experience level.
What can I expect from the interview process at PubNub?
The interview process at PubNub typically includes a series of technical and behavioral questions. For example, candidates may be asked to describe how they would troubleshoot complex backend system issues or lead a team through technical challenges. Preparation for these types of questions will help you demonstrate your problem-solving skills and ability to work collaboratively in a technical environment.
What is the current hiring volume at PubNub?
PubNub currently has 2 active job postings, which include a Senior Backend Engineer and a Senior Solutions Architect. There have been no new job postings in the last 30 days or the last 7 days, indicating a relatively stable hiring volume. If you are interested in these roles, it may be a good opportunity to apply soon as positions can fill quickly.
[05] OVERVIEW
What candidates run into at PubNub.
Tech company interviews typically include a mix of coding, system design, and behavioral rounds. The exact format varies by company size and role level.
[06] PREP TIPS
How candidates prepare.
[07] EXPERT FRAMEWORKS
Frameworks and sample answers from interview coaches.
Curated from Columbia Engineering's licensed BigInterview library: expert-written tips, sample answers, and walkthroughs that work for any Software Engineering interview.
Source: BigInterview (licensed by Columbia Engineering)
[08] FAQ
Questions candidates ask about PubNub interviews.
Salary, visa sponsorship, process, hiring volume. Drawn from public data on PubNub.
PubNub does not currently advertise any information regarding visa sponsorship for international candidates. If you are seeking employment and require visa support, you may want to inquire directly during the interview process. Generally, tech companies may have varying policies on this based on their hiring needs and candidate qualifications.
[09] MORE INTERVIEW PREP
Companies candidates compare with PubNub.
PREP SMARTER. APPLY FASTER.
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