πŸ“
London, UK

Energy System Modeller

No experience
Energy & Climate
Finance
Posted:
December 29, 2025

Octopus Energy

UK-based energy supplier
74.5
Palpable Score
Apply >view company >

This role is an exciting opportunity to build superb tools to help inform our own commercial decisions as well as to help shape the energy system for all participants, both in the UK and around the world.

In the 10 years since launching we have become the largest household supplier in the UK, one of the fastest growing in Europe and are scaling businesses in everything from Renewable Generation to domestic flexibility, and from domestic heat pumps to public EV charging. In total we are operating dozens of businesses in over 30 countries around the World - and we have a lot further to go.

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What you'll do...

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What you'll need...

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Not essential but nice to have:

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How you’ll make an impact..

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Our data platform stack:

We employ software engineering best practices to design, test, and deploy our data platform and services using the below technologies:

Python as our main programming language

Databricks as our data lake platform

Kubernetes for data services and task orchestrationTerraform for infrastructureStreamlit for data applications

Airflow purely for job scheduling and tracking

Circle CI for continuous deploymentParquet and Delta file formats on S3 for data lake storage

Spark for data processing

DBT for data modelling

SparkSQL for analytics

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About the company

Octopus Energy

Company overview
Octopus Energy is an energy supplier and energy-tech group selling electricity and gas while building software and services that support electrification. Octopus Energy runs a wider set of businesses around EV charging, heat pumps and home installations, and the Kraken platform used by multiple utilities globally. Octopus Energy serves millions of customers and operates across many countries, with teams spanning customer operations, field engineering, product, data and software.

Locations and presence

Octopus Energy is headquartered in London and operates across the UK plus dozens of international markets. Octopus Energy offers flexible working in many office roles, while customer operations and field roles often follow site-based or region-based patterns.

Palpable Score

74.5
/ 100
Octopus Energy creates multiple credible ways in for early-career candidates, including paid internships (with an equality-focused stream), work experience routes, and a Level 3 low-carbon apprenticeship track. Octopus Energy is unusually open about what interviews look like, and the company sets expectations around stages and feedback. The score is held back by limited salary-range transparency on many postings and by the lack of published early-career outcome data like conversions, promotions and retention.
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