How long does the Preply interview process take?

Most candidates spend between 4 and 8 weeks from recruiter screen to offer. The onsite loop itself runs in a single day or is split across two half-days, with debrief and offer typically within 5 business days after.

How should I prepare specifically for Preply?

Focus on three things: (1) the company DNA shown above — what they actually grade for, (2) the rounds in your loop, especially the round most candidates underestimate, and (3) drilling on the question types in this guide using a structured framework like CIRCLES or STAR.

Does this apply to engineering or design roles at Preply?

The DNA stays the same — what changes is the round mix. SWE candidates face coding screens instead of Product Sense; designers face portfolio reviews and design exercises. The "what they value" and behavioral signals carry across all functions.

Other roles at Preply:Product Manager Software Engineer Sales Marketing Customer Success

Growth · Software Engineer Interview Guide

Applies via Ashby

How to Pass the Preply Software Engineer Interview in 2026

The Preply DNA (TL;DR)

Preply values candidates demonstrating strong problem-solving, adaptability in a fast-paced environment, and a passion for education technology. They seek individuals who can contribute to their mission of connecting students and tutors, showing initiative and a data-driven approach.

The Preply Interview Loop

Your onsite loop will typically consist of 5 rounds.

1
Round 1
Recruiter Screen
Motivation, role fit, logistics.
2
Round 2
Coding Screen
LeetCode-medium algorithmic problems under time pressure.
3
Round 3
System Design
Distributed systems, trade-offs at scale, architecture under constraints.
4
Round 4
Onsite Coding
LeetCode-hard, debugging, code clarity, edge cases.
5
Round 5
Behavioral / Leadership
Past evidence of ownership, influence, resolving conflict.

The Danger Zone: Top Reasons Candidates Fail

Based on our database of Preply interview outcomes, avoid these common traps:

Not demonstrating empathy or understanding of the stakeholder's perspective.
Not adequately explaining the rationale behind the changes.
Lack of indexing for common query patterns.
Inefficiently checking for keyword presence in specialties.

Test Yourself: Real Preply Questions

Three real prompts pulled from our database.

Type · Algorithmic Thinking

Imagine Preply wants to implement a feature to find the 'best' available tutor for a student based on a complex set of criteria (e.g., tutor rating, response time, price, matching learning goals, availability). Write a function that takes a student's request and a list of available tutors, and returns the ID of the top-ranked tutor. Discuss how you would define and calculate the 'rank'.

Type · Data Structures

Given a list of user sessions on Preply, where each session has a start time and end time, write a function to find the maximum number of concurrent sessions at any point in time. Assume sessions are represented as tuples (start_time, end_time).

Type · Real-time Features

Design a real-time notification system for Preply that alerts students when a tutor they follow becomes available or when a booked lesson is about to start. Discuss the technologies and architecture.

+ many more questions, signals, and worked examples

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Preply Interview Question Bank

A sample from our database, grouped by round. Sign up to see the full set.

9 of 21 questions shown

Recruiter Screen

1
Type · Motivation
What interests you about working at Preply, and how do you see your skills contributing to our mission of connecting language learners with tutors?

Coding Screen

2
Type · Data Structures
Given a list of user sessions on Preply, where each session has a start time and end time, write a function to find the maximum number of concurrent sessions at any point in time. Assume sessions are represented as tuples (start_time, end_time).
3
Type · String Manipulation
Implement a function that takes a list of tutor profiles (each with a 'name' and 'specialties' field, where 'specialties' is a list of strings) and a search query string. Return a list of tutor names whose specialties contain all the keywords from the search query (case-insensitive, partial matches allowed).
+ 1 more questions in this round (sign up to unlock)

System Design

4
Type · Scalability
How would you design a system to recommend relevant tutors to students based on their learning goals, past interactions, and tutor specialties? Consider scalability for millions of users and tutors.
5
Type · Real-time Features
Design a real-time notification system for Preply that alerts students when a tutor they follow becomes available or when a booked lesson is about to start. Discuss the technologies and architecture.
+ 1 more questions in this round (sign up to unlock)

Onsite Coding

6
Type · Algorithmic Thinking
Imagine Preply wants to implement a feature to find the 'best' available tutor for a student based on a complex set of criteria (e.g., tutor rating, response time, price, matching learning goals, availability). Write a function that takes a student's request and a list of available tutors, and returns the ID of the top-ranked tutor. Discuss how you would define and calculate the 'rank'.
7
Type · Debugging
A student reports that sometimes, after booking a lesson, the lesson details page shows incorrect information (e.g., wrong tutor, wrong time). Analyze the following simplified code snippet and identify potential bugs or race conditions that could cause this issue. Suggest fixes.
+ 1 more questions in this round (sign up to unlock)

Behavioral / Leadership

8
Type · Past Experience
Tell me about a time you had to influence a stakeholder (e.g., engineering, marketing, sales) who had a different opinion or priority than you. How did you approach it, and what was the outcome?
9
Type · Ownership
Tell me about a time you took ownership of a problem that wasn't strictly your responsibility. What was the situation, and what did you do?
+ 9 more questions in this round (sign up to unlock)