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ZEFR Software Engineer Interview Questions
& Process

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

Based on 6 interview experiences · FREE TO READ

2.8 Rounds average
Average Typical difficulty
66.7% Positive experience

Candidate interview experiences

First-hand accounts from people who interviewed at ZEFR.

Showing 3 of 6
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ZEFR

Software Engineer

Engineering · more than a year ago

Entry Average Positive experience Decline offer 4 rounds
Interview process
Recruiter call Phone screen Technical screen Onsite
Interview formats
Technical Coding Behavioral

The interviewers were nice and friendly. They explained the company's business well. It seems like a very young team. There were many questions about APIs and YouTube, along with general software development questions. I was interviewed by a product manager, which was a good experience.

Confirmed questions1 question
  • What are your career aspirations for the next decade?
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ZEFR

Lead Software Engineer

Engineering · more than a year ago

Lead Difficult Positive experience No offer 4 rounds
Interview process
Recruiter call Phone screen Technical screen Onsite Background check
Interview formats
Behavioral Technical Coding

A recruiter reached out on LinkedIn, explained the role, and set up an initial call with a tech exec. This was followed by a 45-minute chat about the company and my background. Then, I was invited for a full-day interview with the engineering and product teams. The day included two coding challenges and lunch with another engineer.

Confirmed questions4 questions
  • How would you design a REST API?
  • Can you describe a backend data layout?
  • Design an algorithm to implement a simple game.
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ZEFR

Software Engineer

Engineering

Entry Average Negative experience No offer 3 rounds
Interview process
Recruiter call Phone screen Onsite
Interview formats
Behavioral

The whole process dragged on for over 3 months. I applied the same day the Software Engineer job was posted, and HR-TA reached out 3 months later. I'd applied to a bunch of jobs there and accepted their interview. I tried asking specific questions about the role, but they were vague, and the whole vibe was unclear. It seems like they post jobs without actually intending to hire anyone. Jobs stay up for ages, but when I asked in the interview, they said they were already filled. The interview with the HR TA (A R) was honestly pretty unprofessional. It got cancelled twice. Throughout the interview, their dog was barking non-stop in the background – imagine if I had done that! It feels like they're either trying to fool their employees into thinking they're hiring to lighten their load, or they're trying to impress investors with fake growth.

Confirmed questions1 question
  • What are your expectations for this role?

ZEFR Software Engineer Interview Questions

Quoted word for word from ZEFR interview reports.

Implement the Fibonacci numbers algorithm using pseudocode.

Read reports

What is an algorithm for implementing the Fill Color feature in MS Paint?

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Could you explain the differences between various types of joins?

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Formats, difficulty and experience

Across all 6 ZEFR interview reports.

Interview formats

Behavioral 38.5%
Technical 30.8%
Coding 30.8%

Interview difficulty

Easy 16.7%
Average 50%
Difficult 33.3%

Candidate experience

Positive 66.7%
Negative 33.3%