Other roles at Idealista:Product Manager Software Engineer Marketing Sales

How to Pass the Idealista Software Engineer Interview in 2026

The Idealista Software Engineer interview runs 5 rounds: Recruiter Screen, Coding Screen, System Design, Onsite Coding, and Behavioral / Leadership. JobMentis holds 12 Software Engineer questions for Idealista, last updated October 23, 2026.

Growth · Software Engineer Interview Guide

Interview language: Spanish

Expect to code inJava Python JavaScript

The Idealista DNA (TL;DR)

Idealista values practical problem-solving, a strong understanding of the real estate market, and the ability to contribute to their platform's growth. They seek candidates who are pragmatic, adaptable, and demonstrate a collaborative spirit.

The Idealista 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 problems, reasoning about defects, 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 Idealista interview outcomes, avoid these common traps:

Focusing only on personal career growth rather than company impact.
Describing actions that were purely reactive rather than proactive
Lack of fault tolerance and message durability.
Neglecting the impact on team velocity and existing deployment processes

Test Yourself: Idealista Interview Questions

Three questions from the Idealista bank.

Type · Debugging

Root Cause Analysis (Issue Tree + 5 Whys)

A user reports that their saved search filter for 'properties with a garden' is sometimes showing apartments that do not have gardens. Analyze the provided (simplified) code snippet for the property filtering logic and identify the bug.

Type · Motivation

What interests you most about working at Idealista, particularly within the retail sector, and how do you see your skills contributing to our mission of revolutionizing online real estate?

Type · Learning

STAR

We are currently migrating parts of our legacy monolithic architecture to event-driven microservices using Kafka. Tell us about a time you had to adapt your development workflow to integrate a new architectural paradigm into an existing, high-availability platform without interrupting service.

+ many more questions, signals, and worked examples

Unlock the Idealista rubric, free

Idealista Interview Question Bank

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

9 of 12 questions shown

Recruiter Screen

1
Type · Motivation
What interests you most about working at Idealista, particularly within the retail sector, and how do you see your skills contributing to our mission of revolutionizing online real estate?

Coding Screen

2
Type · Algorithmic
Given a list of property listings with their prices and locations, find the top K most expensive properties within a specified geographical radius. Assume you have access to a data structure that can efficiently query properties by location.
3
Type · Algorithmic
You are given two sets of user search queries for Idealista: one from yesterday and one from today. Determine the percentage of queries that are common to both sets, considering minor variations in spelling (e.g., 'apartment' vs 'apartament').
+ 1 more questions in this round (sign up to unlock)

System Design

4
Type · System Design
Design a real-time notification system for Idealista that alerts users when new properties matching their saved searches become available. Consider scalability for millions of users and properties.
5
Type · System Design
Design the backend system for Idealista's 'Similar Properties' feature. Given a property ID, the system should return a list of visually and functionally similar properties.
+ 1 more questions in this round (sign up to unlock)

Onsite Coding

6
Type · Algorithmic
You are given a stream of property view events (user_id, property_id, timestamp). Implement a system to detect and flag potentially fraudulent activity, such as a single user viewing the same property hundreds of times within a minute.
7
Type · Debugging
Root Cause Analysis (Issue Tree + 5 Whys)
A user reports that their saved search filter for 'properties with a garden' is sometimes showing apartments that do not have gardens. Analyze the provided (simplified) code snippet for the property filtering logic and identify the bug.

Behavioral / Leadership

8
Type · Conflict Resolution
STAR
Our search ranking team recently proposed a change to prioritize newer listings over high-engagement listings to keep inventory fresh, but the monetization team argued this would decrease lead conversion rates. How did you navigate a similar situation where technical optimization goals clashed with business KPIs?
9
Type · Ownership
STAR
During a high-traffic period, such as the start of the month when property listings spike, you notice that our image processing pipeline is consistently lagging. Describe how you identified the bottleneck and the specific steps you took to improve the ingestion throughput for our property media assets.
+ 1 more questions in this round (sign up to unlock)

Unlock all 12 Idealista questions, free

No credit card. Every question with its framework, the grading signals interviewers score against, and a worked answer for each.

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Interview tracks at Idealista

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

Idealista resume and cover letter

Applications to Idealista go through an applicant tracking system, which parses your resume before a recruiter reads it. Keep the layout plain and describe your skills in the words of the posting. The interviews usually run in Spanish, so send your resume and cover letter in Spanish unless the posting asks for another language. Give each point in the Idealista DNA above a bullet that proves it.

Check your resume against the Idealista job posting

Upload your resume with the Idealista job description to see your ATS score, the keywords you are missing and what to fix before you apply.

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Write your Idealista cover letter

Drafted from your resume and the Idealista posting, so it names what you actually did. You edit it before you send it.

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Practice Idealista interviews end-to-end

Idealista Mock Interview

Run a live mock interview with our AI interviewer using Idealista-style prompts. Get scored on structure, signal, and answer length - exactly how the real loop grades you.

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STAR Stories for Idealista Behavioral Rounds

Build a Story Bank of your past wins, mapped to the leadership signals Idealista interviewers grade on. Reuse them across every behavioral round.

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Idealista Interview Prep Hub

The frameworks behind every Idealista round: CIRCLES for product sense, hypothesis-driven debugging for analytical, STAR for behavioral. Learn each one in 10 minutes.

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Interview Frameworks

CIRCLES, STAR, AARRR, RICE, MECE. The exact frameworks that make Idealista interviewers nod instead of frown. Step-by-step playbooks with the moves and the pitfalls.

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JobMentis for ChromeSee these interview questions on the company's own job postings, on LinkedIn and careers sites.See what it does

Sample answers

What a strong answer to these Idealista interview questions shows.

A strong answer shows: Systematic debugging approach.; Attention to detail in code logic.; Understanding of data representation and potential inconsistencies..

What interests you most about working at Idealista, particularly within the retail sector, and how do you see your skills contributing to our mission of revolutionizing online real estate?

A strong answer shows: Genuine interest in Idealista's product and market.; Ability to connect personal skills to company goals.; Understanding of the retail industry's challenges and opportunities..

Frequently asked questions

How many interview rounds does Idealista run for Software Engineer candidates?

5 rounds, in this order: Recruiter Screen, Coding Screen, System Design, Onsite Coding, and Behavioral / Leadership.

What does Idealista look for in Software Engineer candidates?

In which language does Idealista run its interviews?

Idealista usually interviews in Spanish.

How many Idealista Software Engineer interview questions does JobMentis hold?

12 questions across the rounds of the Idealista loop, last updated October 23, 2026.

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