Difficulty
Difficult
Candidate-reported interview insights
Apollo.io Backend Engineer interviews, decoded.
Explore commonly reported questions, interview rounds, difficulty, duration, and candidate experiences for the Backend Engineer role at Apollo.io.
3.9 rating Enterprise Software & Network Solutions
Interview overview
Average rounds
3.7
Average duration
~44 days
Difficulty and candidate experience
Interview difficulty
easy0%
average36.4%
difficult63.6%
Candidate experience
positive81.8%
negative9.1%
neutral9.1%
Candidate-reported interview process
It was a multi step interview process. First, a recruiter screening call. Then, a technical interview focused on Data Structures and Algorithms. After that, two onsite interviews. The first onsite had a behavioural interview and then a system design interview. The second onsite consisted of another system design interview, followed by a technical interview covering Design Patterns and OOP concepts.
We'll start with an initial call to go over the company and the interview process. After that, you'll have a technical assignment on CoderByte with 2 tasks to complete in 1 hour, in any language you prefer. This will be followed by a 1-hour behavioral interview and a 1-hour practical coding session for backend.
Started with an online assessment, then went through 4 rounds, each about an hour long. The rounds were: DSA, HLD, Hiring Manager chat, and Machine Coding. The entire process from the OA to getting the offer took about a month and a half.
Common Apollo.io Backend Engineer interview questions
A focused selection of the most detailed candidate-submitted questions.
- 1
Not sharing questions as NDA is signed
- 2
Data Structures and Algorithms (DSA)
- 3
Minimum window substring in OA
- 4
string based question in F2F
Interview question formats
Coding35.3%
Behavioral23.5%
Technical20.6%
System Design20.6%
Ready to prepare for Apollo.io?
Practice technical, system design, and behavioral questions with Zitlee.
Interview information is based on candidate reports and may not represent the current official hiring process of Apollo.io.