Quantcast Software Engineer Interview Questions
& Process
Real candidates share what happened, how many rounds they had,
and how the experience turned out.
Based on 103 interview experiences · FREE TO READ
Candidate interview experiences
First-hand accounts from people who interviewed at Quantcast.
Quantcast
Software Engineer
Entry Average Negative experience No offer 6 rounds
Interview process
Recruiter call Take home Technical screen Technical screen Technical screen Technical screen
Interview formats
Coding Technical System Design
The process was really long, taking many weeks. It started with an initial interview, followed by an at-home task. Then there was an interview to go over the at-home task, then a live coding interview for problem-solving, then an engineering interview, and finally a system design interview. Even after all those steps, I got rejected. I asked the recruiter for feedback because it was so time-consuming, but they just ghosted me and didn't reply, which I found unprofessional after all the effort I put in.
Confirmed questions2 questions
- Tell me about a basic algorithm you've used.
- Can you explain a data structure you've worked with?
Quantcast
Software Engineer
Mid Difficult Negative experience No offer 6 rounds
Interview process
Recruiter call Take home Technical screen Technical screen Technical screen Background check
Interview formats
Coding System Design Behavioral
It started with an HR screening, followed by a very easy take-home task. Then there was a 1-hour follow-up call to discuss the task and add new features. After that, the real interviews began: three back-to-back sessions including system design, algorithms and data structures, and a behavioral interview. I didn't like the process because it felt strange, with two interviewers on every call, one speaking and the other just observing silently. Be prepared for tough questions, as they seem to aim for FANG-level difficulty despite the lower salaries.
Confirmed questions0 questions
No confirmed questions were included in this interview report.
Quantcast
Software Engineer
Intern Difficult Positive experience Accept offer 4 rounds
Interview process
Take home Recruiter call Phone screen Recruiter call
Interview formats
Coding Behavioral Technical
My interview process with Quantcast started with a coding challenge that took about 3 hours. After that, I had an hour-long behavioral interview with Helen for culture fit. The technical phone screen was scheduled soon after, where the interviewer focused more on design choices and trade-offs rather than the code itself. The final stage involved a conversation with the Head of Engineering to assess team fit. Helen did a great job making the process smooth and transparent, and I was impressed with Quantcast's top-notch engineers and the kind, collaborative atmosphere.
Confirmed questions2 questions
- Can you tell me why you're interested in Quantcast?
- How do you view culture fit in a workplace?
Quantcast Software Engineer Interview Questions
Quoted word for word from Quantcast interview reports.
“Write a function to list all zip codes within a given alphanumeric range (start, end), assuming fixed-length zip codes like AB123Z.”
Read reports →“Given a list of strings, can you group the ones that are anagrams of each other? For instance, with input like ["eat", "tea", "tan", "ate", "nat", "bat"], the output should be [ ["ate", "eat","tea"], ["nat","tan"], ["bat"] ].”
Read reports →“What is the longest substring with up to 2 repeating characters?”
Read reports →“Given an array of non-negative integers where each element represents your max jump length from that position, can you reach the last index starting from the first index?”
Read reports →“How would you identify the nth node from the end of a linked list?”
Read report →“Given a function that generates random integers within the range [1, 5], how would you create a function to generate a random integer within the range [1, 7]?”
Read report →“Can you find the single number that appears only once in a sorted list where all other numbers appear twice?”
Read report →“How would you calculate the nth Fibonacci number, and what are the optimization techniques for it?”
Read report →“Regarding a large dataset of frequently visited websites, what data structure would be appropriate for storing the most accessed ones?”
Read report →Formats, difficulty and experience
Across all 103 Quantcast interview reports.