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ironSource Fullstack Engineer Interview Questions
& Process

Real candidates share what happened, how many rounds they had,
and how the experience turned out.

Based on 5 interview experiences · FREE TO READ

3.8 Rounds average
Average Typical difficulty
60% Positive experience

Candidate interview experiences

First-hand accounts from people who interviewed at ironSource.

Showing 3 of 5
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ironSource

Full Stack Engineer

Engineering · more than a year ago

Mid Difficult Neutral experience No offer 2 rounds
Interview process
Recruiter call Technical screen
Interview formats
Behavioral Technical Coding

The interview process started with a phone call from HR, who was quite friendly and asked about my background. Then, I had a second interview with the team lead. This part involved some tough technical questions.

Confirmed questions2 questions
  • Questions about algorithms
  • Questions about design patterns
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ironSource

Full Stack Developer

Engineering · more than a year ago

Mid Difficult Positive experience No offer 3 rounds
Interview process
Technical screen Technical screen Recruiter call
Interview formats
Technical Behavioral

It was a quick process with two technical interviews and one personal interview. The interviewers were nice and the questions were interesting. The hr interview was mostly about my cv and my personality.

Confirmed questions1 question
  • Tell me about your experience with databases and system design.
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ironSource

Full Stack Software Engineer

Engineering · more than a year ago

Mid Average Neutral experience No offer 3 rounds
Interview process
Recruiter call Take home Technical screen
Interview formats
Technical Coding

It began with a brief phone chat with the technical recruiter. Then, there was a coding home assignment, which wasn't too challenging, but the key was to write it cleanly and include tests. After that, I was invited to a technical interview with the team leader and a team member. We talked generally about my experience for about 30 minutes, and then I was given a coding exercise in my preferred programming language.

Confirmed questions1 question
  • The exercise involves implementing two provided REST API calls.

ironSource Fullstack Engineer Interview Questions

Quoted word for word from ironSource interview reports.

Given N steps on a ladder, how many ways can you climb it if you can take 1 or 2 steps at a time?

Read reports

I was asked some questions to test my thought process.

Read report

Tell me about your experience with databases and system design.

Read report

Formats, difficulty and experience

Across all 5 ironSource interview reports.

Interview formats

Technical 38.5%
Behavioral 30.8%
Coding 23.1%
Other 7.7%

Interview difficulty

Easy 20%
Average 40%
Difficult 40%

Candidate experience

Neutral 40%
Positive 60%