Πόσο διαρκεί η διαδικασία συνέντευξης της Octopus Energy;

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 Octopus Energy;

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 Octopus Energy;

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.

What interests you about working in the energy sector, and specifically at Octopus Energy?

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

Given a stream of smart meter readings (timestamp, energy_consumed), write a function to calculate the peak consumption hour for a given day, handling potential out-of-order or missing readings.

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

Implement a function to determine if a customer's energy usage pattern (represented as a list of hourly consumption values) matches a predefined tariff profile, allowing for a certain tolerance percentage.

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

Design a system to ingest, process, and store real-time smart meter data from millions of households for billing and analytics purposes. Consider data volume, velocity, and variety.

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

Design an API service that allows customers to view their historical energy consumption data, filter by date range, and download reports. Discuss potential bottlenecks and how to mitigate them.

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

Write a function to simulate the charging and discharging of a home battery system based on solar generation, grid prices, and user-defined preferences (e.g., prioritize self-consumption, minimize cost).

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

A customer reports that their monthly bill seems incorrect, showing much higher consumption than usual. Here's a snippet of the processed meter data and the billing calculation logic. Find the bug.

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 a significant disagreement with a colleague or stakeholder. How did you approach the situation, and what was the outcome?

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

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

Growth · Software Engineer Interview Guide

How to Pass the Octopus Energy Software Engineer Interview in 2026

Το DNA της Octopus Energy (TL;DR)

Octopus Energy seeks individuals passionate about green energy, customer advocacy, and collaborative problem-solving. They assess alignment with their "tentacles" (values) like honesty, simplicity, and a drive to make a positive impact, alongside practical skills and adaptability.

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 Octopus Energy

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 Octopus Energy, αποφύγετε αυτές τις συνηθισμένες παγίδες:

Inefficiently iterating through the entire stream for each query instead of maintaining a running state.
Not clearly articulating the steps taken to resolve the conflict.
Designing a monolithic API without thinking about microservices or horizontal scaling.
Not considering memory constraints if the dataset is extremely large.

Δοκιμάστε τον εαυτό σας: Πραγματικές ερωτήσεις Octopus Energy

Τρία πραγματικά prompts τραβηγμένα από τη βάση δεδομένων μας.

Τύπος · Ownership

Tell me about a time you took full ownership of a problem or project that wasn't explicitly assigned to you, and what was the outcome?

Τύπος · behavioral

Describe a time you faced a significant technical challenge or a bug that was difficult to track down. What steps did you take to resolve it, and what did you learn?

Τύπος · Influence

Describe a situation where you had to influence a key stakeholder (internal or external) who was initially resistant to your proposal. How did you approach it, and what was the result?

+ πολλές ακόμη ερωτήσεις, σήματα και επεξεργασμένα παραδείγματα

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Octopus Energy 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
Τύπος · motivation
What interests you about working in the energy sector, and specifically at Octopus Energy?

Coding Screen

2
Τύπος · algorithmic
Given a stream of smart meter readings (timestamp, energy_consumed), write a function to calculate the peak consumption hour for a given day, handling potential out-of-order or missing readings.
3
Τύπος · algorithmic
Implement a function to determine if a customer's energy usage pattern (represented as a list of hourly consumption values) matches a predefined tariff profile, allowing for a certain tolerance percentage.
+ 1 more questions in this round (sign up to unlock)

System Design

4
Τύπος · system-design
Design a system to ingest, process, and store real-time smart meter data from millions of households for billing and analytics purposes. Consider data volume, velocity, and variety.
5
Τύπος · system-design
Design an API service that allows customers to view their historical energy consumption data, filter by date range, and download reports. Discuss potential bottlenecks and how to mitigate them.
+ 1 more questions in this round (sign up to unlock)

Onsite Coding

6
Τύπος · algorithmic
Write a function to simulate the charging and discharging of a home battery system based on solar generation, grid prices, and user-defined preferences (e.g., prioritize self-consumption, minimize cost).
7
Τύπος · debugging
A customer reports that their monthly bill seems incorrect, showing much higher consumption than usual. Here's a snippet of the processed meter data and the billing calculation logic. Find the bug.
+ 1 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 colleague or stakeholder. How did you approach the situation, and what was the outcome?
9
Τύπος · Ownership
Tell me about a time you took full ownership of a problem or project that wasn't explicitly assigned to you, and what was the outcome?
+ 9 more questions in this round (sign up to unlock)

Unlock the full Octopus Energy question bank

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Interview tracks at Octopus Energy

How Octopus Energy's DNA translates across functions. Pick your role.

SWE candidates are evaluated on technical proficiency, problem-solving skills for scalable energy infrastructure, and clean code practices. Experience with cloud technologies (AWS) and contributing to their Kraken tech stack, ensuring reliability and efficiency, is key.

Ownership

Tell me about a time you took full ownership of a problem or project that wasn't explicitly assigned to you, and what was the outcome?

behavioral

Describe a time you faced a significant technical challenge or a bug that was difficult to track down. What steps did you take to resolve it, and what did you learn?

+ 1 more

Unlock the Software Engineer grading rubric for Octopus Energy

See full Software Engineer guide