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Backend Engineer (m/w/d) – Python / Kundenportal & Ökosystem Wärmepumpe

Octopus Energy - Berlin, Berlin, Germany - In-office - posted 2026-08-05

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Octopus Energy is a global energy technology company driving the energy transition through innovative heat pump solutions. Since 2022, the company has been installing sustainable technology with its own specialists, setting new standards for the future of energy supply. The company's offerings extend beyond green electricity tariffs to include smart meter rollout, e-mobility solutions, and distributed renewable energy generation from wind and solar. The mission is to make globally needed energy 100% sustainable through technology innovation. As a Backend Engineer, you will develop and maintain the customer portal and ecosystem infrastructure that supports the heat pump business and broader energy solutions. You'll work with Python to build scalable backend systems that enable customers to manage their energy consumption, monitor installations, and interact with the company's growing suite of services. You'll collaborate with cross-functional teams including product, frontend engineers, and operations to deliver features that support the energy transition. The role involves working on APIs, databases, and backend services that power customer-facing applications and internal systems. You'll contribute to a codebase that serves thousands of customers across Germany and beyond. This is an opportunity to work on meaningful climate technology at a company with significant scale and ambition. You'll be part of a global, agile team focused on modernizing energy infrastructure and accelerating the shift to renewable energy.

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