Πόσο διαρκεί η διαδικασία συνέντευξης της Leboncoin;

Οι περισσότεροι υποψήφιοι ξοδεύουν 4 έως 8 εβδομάδες από το screen recruiter μέχρι την προσφορά. Το ίδιο το onsite loop τρέχει σε μία μέρα ή χωρίζεται σε δύο μισές ημέρες, με debrief και προσφορά τυπικά μέσα σε 5 εργάσιμες ημέρες μετά.

Πώς πρέπει να προετοιμαστώ ειδικά για την Leboncoin;

Εστιάστε σε τρία πράγματα: (1) στο DNA της εταιρείας που δείχνεται παραπάνω — τι βαθμολογούν πραγματικά, (2) στους γύρους του loop σας, ειδικά τον γύρο που οι περισσότεροι υποψήφιοι υποτιμούν, και (3) σε εξάσκηση στους τύπους ερωτήσεων αυτού του οδηγού χρησιμοποιώντας ένα δομημένο πλαίσιο όπως CIRCLES ή STAR.

Ισχύει αυτό για ρόλους engineering ή design στην Leboncoin;

Το DNA παραμένει το ίδιο — αυτό που αλλάζει είναι ο συνδυασμός γύρων. Οι υποψήφιοι SWE αντιμετωπίζουν coding screens αντί για Product Sense· οι designers αντιμετωπίζουν portfolio reviews και ασκήσεις σχεδιασμού. Το «τι εκτιμούν» και τα συμπεριφορικά σήματα μεταφέρονται σε όλες τις λειτουργίες.

Why are you interested in joining Leboncoin, and what specifically about our platform and the retail/classifieds industry excites you as a software engineer?

Type: Motivation. Sign up at JobMentis to see the full framework, grading signals, and worked answer for this question.

Given a list of user search queries for Leboncoin, implement a function to find the most frequent n-gram (sequence of words) across all queries. Consider efficiency for a large dataset.

Type: Algorithmic. Sign up at JobMentis to see the full framework, grading signals, and worked answer for this question.

Design a system to detect duplicate listings on Leboncoin based on text similarity and image features. You need to return potential duplicates for a given new listing.

Type: Algorithmic. Sign up at JobMentis to see the full framework, grading signals, and worked answer for this question.

Design a real-time notification system for Leboncoin users when a new listing matching their saved search criteria is posted.

Type: System Design. Sign up at JobMentis to see the full framework, grading signals, and worked answer for this question.

Design the backend system for Leboncoin's image upload and processing pipeline. Consider storage, resizing, format conversion, and CDN delivery.

Type: System Design. Sign up at JobMentis to see the full framework, grading signals, and worked answer for this question.

Write a function to efficiently find all listings within a given geographical bounding box and price range. Assume listings have latitude, longitude, and price attributes.

Type: Coding. Sign up at JobMentis to see the full framework, grading signals, and worked answer for this question.

You are given a log file from Leboncoin's web server. Parse the log file to extract specific information, such as the number of unique visitors per day, the most requested pages, and error rates. Handle malformed log entries gracefully.

Type: Coding. Sign up at JobMentis to see the full framework, grading signals, and worked answer for this question.

Tell me about a time you took ownership of a problem that wasn't strictly your responsibility. What was the situation and outcome?

Type: Ownership. Sign up at JobMentis to see the full framework, grading signals, and worked answer for this question.

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

Enterprise · Software Engineer Interview Guide

How to Pass the Leboncoin Software Engineer Interview in 2026

Το DNA της Leboncoin (TL;DR)

Leboncoin values candidates who demonstrate strong problem-solving skills, a user-centric approach to product development, and the ability to collaborate effectively within a fast-paced, agile environment. Cultural fit and a passion for their marketplace mission are key.

Οι συνεντεύξεις tech διεξάγονται στα αγγλικά

Ακόμη κι όταν κάνετε αίτηση τοπικά, η ίδια η συνέντευξη γίνεται σχεδόν πάντα στα αγγλικά. Σας δείχνουμε κάθε ερώτηση και prompt πρώτα στα αγγλικά — τη γλώσσα στην οποία θα γίνει η συνέντευξη — με μετάφραση από κάτω για να προετοιμαστείτε στην ισχυρότερη γλώσσα σας.

Το Interview Loop της Leboncoin

Το onsite loop σας θα αποτελείται τυπικά από 5 γύρους.

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

Η ζώνη κινδύνου: Κορυφαίοι λόγοι που οι υποψήφιοι αποτυγχάνουν

Με βάση τη βάση δεδομένων μας με αποτελέσματα συνεντεύξεων Leboncoin, αποφύγετε αυτές τις συνηθισμένες παγίδες:

Not clearly articulating the steps taken to resolve the conflict.
Not handling edge cases like empty queries, single-word queries, or punctuation.
Failing to reflect on lessons learned.
Not considering the scale of the platform and potential performance bottlenecks.

Δοκιμάστε τον εαυτό σας: Πραγματικές ερωτήσεις Leboncoin

Τρία πραγματικά prompts τραβηγμένα από τη βάση δεδομένων μας.

Τύπος · Conflict Resolution

Tell me about a time you had a significant disagreement with a stakeholder (e.g., engineering lead, marketing manager, executive). How did you approach the situation, and what was the outcome?

Τύπος · Algorithmic

Implement a rate limiter for API requests to Leboncoin's backend. The limiter should allow a maximum of X requests per user per minute, with a burst capacity of Y.

Τύπος · Behavioral

Describe a challenging bug you encountered in a production system at a previous company. Walk me through how you diagnosed it, the steps you took to fix it, and how you prevented it from happening again.

+ πολλές ακόμη ερωτήσεις, σήματα και επεξεργασμένα παραδείγματα

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Leboncoin Interview Question Bank

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

9 of 22 questions shown

Recruiter Screen

1
Τύπος · Motivation
Why are you interested in joining Leboncoin, and what specifically about our platform and the retail/classifieds industry excites you as a software engineer?

Coding Screen

2
Τύπος · Algorithmic
Given a list of user search queries for Leboncoin, implement a function to find the most frequent n-gram (sequence of words) across all queries. Consider efficiency for a large dataset.
3
Τύπος · Algorithmic
Design a system to detect duplicate listings on Leboncoin based on text similarity and image features. You need to return potential duplicates for a given new listing.
+ 1 more questions in this round (sign up to unlock)

System Design

4
Τύπος · System Design
Design a real-time notification system for Leboncoin users when a new listing matching their saved search criteria is posted.
5
Τύπος · System Design
Design the backend system for Leboncoin's image upload and processing pipeline. Consider storage, resizing, format conversion, and CDN delivery.
+ 2 more questions in this round (sign up to unlock)

Onsite Coding

6
Τύπος · Coding
Write a function to efficiently find all listings within a given geographical bounding box and price range. Assume listings have latitude, longitude, and price attributes.
7
Τύπος · Coding
You are given a log file from Leboncoin's web server. Parse the log file to extract specific information, such as the number of unique visitors per day, the most requested pages, and error rates. Handle malformed log entries gracefully.
+ 2 more questions in this round (sign up to unlock)

Behavioral / Leadership

8
Τύπος · Conflict Resolution
Tell me about a time you had a significant disagreement with a stakeholder (e.g., engineering lead, marketing manager, executive). How did you approach the situation, and what was the outcome?
9
Τύπος · Ownership
Tell me about a time you took ownership of a problem that wasn't strictly your responsibility. What was the situation and outcome?
+ 8 more questions in this round (sign up to unlock)

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Interview tracks at Leboncoin

How Leboncoin's DNA translates across functions. Pick your role.

SWEs are evaluated on algorithms, data structures, system design for high-traffic classifieds, and practical coding skills. Demonstrate experience with scalable backend services (e.g., Java, Go) or modern frontend (React) to handle millions of daily users.

Conflict Resolution

Tell me about a time you had a significant disagreement with a stakeholder (e.g., engineering lead, marketing manager, executive). How did you approach the situation, and what was the outcome?

Algorithmic

Implement a rate limiter for API requests to Leboncoin's backend. The limiter should allow a maximum of X requests per user per minute, with a burst capacity of Y.

+ 1 more

Unlock the Software Engineer grading rubric for Leboncoin

See full Software Engineer guide