How long does the Repsol 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 Repsol?

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 Repsol?

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.

Why are you interested in joining Repsol, and what aspects of our work in the energy sector particularly appeal to 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 stream of sensor readings from oil rigs, design an algorithm to detect anomalies that could indicate equipment failure or environmental hazards. Assume readings are time-series data with multiple parameters (temperature, pressure, vibration).

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

You need to optimize the routing of maintenance drones across multiple offshore platforms. Given a set of platforms, their locations, and estimated travel times between them, find the shortest path that visits each platform exactly once and returns to the origin. This is a variation of the Traveling Salesperson Problem (TSP).

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

Design a real-time monitoring system for Repsol's renewable energy assets (e.g., wind farms, solar parks). The system should ingest data from thousands of sensors, process it, detect potential issues, and provide alerts to operations teams.

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

Design a system to manage and optimize the supply chain logistics for refined petroleum products, from refineries to distribution terminals and retail stations. Consider inventory management, demand forecasting, and dynamic routing.

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

Write a function that takes a list of historical energy consumption data points (timestamp, consumption) for a region and identifies the top N recurring daily/weekly patterns. For example, identify peak hours or days with consistently high usage.

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

Here is a piece of code intended to calculate carbon emissions based on fuel type and quantity. It has several bugs. Find and fix them, and explain your reasoning.

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

Tell me about a time you had to work with a complex, legacy system. What were the challenges, and how did you approach understanding and improving it?

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

Describe a challenging technical problem you encountered on a project related to energy infrastructure or operations. How did you debug it, and what was the outcome?

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

Other roles at Repsol:Software Engineer Supply Chain

Enterprise · Software Engineer Interview Guide

How to Pass the Repsol Software Engineer Interview in 2026

The Repsol DNA (TL;DR)

Repsol values candidates who demonstrate strong technical acumen, practical problem-solving skills, and a commitment to safety and sustainability. They look for individuals who can contribute to their energy transition goals and integrate well into a large, multinational team.

The Repsol Interview Loop

Your onsite loop will typically consist of 4 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 Repsol interview outcomes, avoid these common traps:

Describing a situation where they were simply insubordinate or unwilling to compromise.
Choosing an inefficient max-flow algorithm (e.g., Ford-Fulkerson without Edmonds-Karp or Dinic's optimization).
Not addressing data ingestion challenges at scale (high volume, velocity).
Not considering the complexity of real-world logistics, such as varying transport modes, delivery windows, and dynamic demand.

Test Yourself: Real Repsol Questions

Three real prompts pulled from our database.

Type · Algorithmic

Implement a function to simulate the flow of crude oil through a network of pipelines. The function should take a graph representing the pipeline network and calculate the maximum flow from a source (e.g., extraction point) to a sink (e.g., refinery).

Type · System Design

Design a platform for analyzing seismic data to identify potential oil and gas reserves. The system needs to handle large datasets, perform complex computations (e.g., seismic imaging), and provide visualization tools for geoscientists.

Type · Behavioral

Tell me about a time you disagreed with a technical decision made by your team or manager. How did you handle the situation, and what was the result?

+ many more questions, signals, and worked examples

Unlock the rubric →

Repsol Interview Question Bank

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

9 of 15 questions shown

Recruiter Screen

1
Type · Motivation
Why are you interested in joining Repsol, and what aspects of our work in the energy sector particularly appeal to you as a software engineer?

Coding Screen

2
Type · Algorithmic
Given a stream of sensor readings from oil rigs, design an algorithm to detect anomalies that could indicate equipment failure or environmental hazards. Assume readings are time-series data with multiple parameters (temperature, pressure, vibration).
3
Type · Algorithmic
You need to optimize the routing of maintenance drones across multiple offshore platforms. Given a set of platforms, their locations, and estimated travel times between them, find the shortest path that visits each platform exactly once and returns to the origin. This is a variation of the Traveling Salesperson Problem (TSP).
+ 1 more questions in this round (sign up to unlock)

System Design

4
Type · System Design
Design a real-time monitoring system for Repsol's renewable energy assets (e.g., wind farms, solar parks). The system should ingest data from thousands of sensors, process it, detect potential issues, and provide alerts to operations teams.
5
Type · System Design
Design a system to manage and optimize the supply chain logistics for refined petroleum products, from refineries to distribution terminals and retail stations. Consider inventory management, demand forecasting, and dynamic routing.
+ 1 more questions in this round (sign up to unlock)

Onsite Coding

6
Type · Coding
Write a function that takes a list of historical energy consumption data points (timestamp, consumption) for a region and identifies the top N recurring daily/weekly patterns. For example, identify peak hours or days with consistently high usage.
7
Type · Debugging
Here is a piece of code intended to calculate carbon emissions based on fuel type and quantity. It has several bugs. Find and fix them, and explain your reasoning.
+ 1 more questions in this round (sign up to unlock)

Behavioral / Leadership

8
Type · Behavioral
Tell me about a time you had to work with a complex, legacy system. What were the challenges, and how did you approach understanding and improving it?
9
Type · Behavioral
Describe a challenging technical problem you encountered on a project related to energy infrastructure or operations. How did you debug it, and what was the outcome?
+ 3 more questions in this round (sign up to unlock)

Unlock the full Repsol question bank

Free signup, no credit card. You get every question + the framework, grading signals, and worked answer for each.

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Interview tracks at Repsol

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

SWE candidates at Repsol should highlight experience with cloud platforms (Azure/AWS), data engineering, IoT, and AI/ML for optimizing energy operations. Expect questions on scalable systems, data security, and contributing to digital transformation initiatives within an industrial context.

Algorithmic

System Design

+ 1 more

Unlock the Software Engineer grading rubric for Repsol

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