Finance Data Analyst

Octopus Energy
London (GB)Posted 24 February 2026

Tech Stack

Job Description

After starting a mere 10 years ago, Octopus is the largest energy supplier in the UK. We’ve built the technology to serve millions of energy customers and handle the billions of pounds worth of customer and third party transactions that this entails. As Octopus has grown, so too has the complexity, variation and scale of our cost base. As such, we’re looking for a curious, detail-driven part or fully qualified accountant with data skills to help us truly understand, validate, and control our cost base.  This role sits right at the intersection of finance, data, and the wider business; giving you real ownership over how costs flow through the accounts and how they impact our reporting. You’ll work closely with our Finance and Gross Margin teams to build and maintain a robust cost accruals process, partner with other teams across the business to understand how costs arise in the real world, and turn that insight into scalable, automated processes. If you enjoy getting under the hood of complex data, improving controls, and building new processes and systems, this is a role where you can have a big impact. This is a fantastic opportunity to work at the intersection of finance and data in an award winning team for a high growth business that is at the forefront of the net zero transition.