Octopus Energy started with a bold idea: to build Britain’s first truly digital energy supplier. By combining world‑class tech with brilliant humans who care deeply about customers and driving the renewable energy transition, we made it happen and in 2025, we became Britain’s largest energy supplier.
Now, we’re scaling fast and building the next generation of products to accelerate the green energy transition. From making it effortless to switch to heat pumps, solar and EVs, to launching smart tariffs and creating renewable generation at scale, we’re solving some of the most complex challenges in energy with speed, creativity and customer obsession. We’re also enabling our global businesses to reach the full capability of what we’ve achieved in the UK, taking the learnings, products and experiences that customers love here and rolling them out worldwide.
At Octopus Tech, you’ll have real ownership, variety, and the chance to shape products that make a tangible difference in people’s lives—lowering bills, enabling greener living, and delivering experiences customers genuinely love. You’ll work side by side with teams across marketing, operations, and data, and see the impact of your work in the real world, fast.
What you’ll need
- 5+ years of professional experience in backend web application development
- Hands‑on experience with Python/Django or equivalent web frameworks
- Strong systems design abilities, including microservices architecture
- Experience designing and operating RDBMS (e.g., PostgreSQL, MySQL)
- Experience with secure, reliable, large‑scale/high‑transaction systems
- Experience developing and operating systems in cloud environments (AWS, GCP, or Azure)
- A self‑sufficient person with a high level of initiative, able to work autonomously in a fast‑changing environment
- A strong team player who collaborates across teams and departments, mentoring and coaching more junior developers
- Someone excited to solve social challenges through technology
- Interest in environmental issues and the energy industry
We’re looking for someone with a general interest in technology and problem‑solving; someone diligent and thoughtful. It would be helpful to have experience/expertise in the following (in rough priority order):
- Python
- Django (or equivalent web framework)
- Domain modelling
- Designing distributed systems, improving service reliability, and shaping long‑term architectural strategy
- HTTP and REST APIs, GraphQL and other API technologies
- Writing robust and fault‑tolerant software
- Celery and async processing
- Postgres
- Plus experience in the following would be a bonus: AWS, Terraform, Packer, Consul
Why else you’ll love it here
- Salary transparency: We discuss compensation during the interview process to match your experience with the correct salary band.
- Culture: An environment where people learn, decide, and build quickly, with autonomy and meaningful impact.
- Benefits: Competitive health, pension, and growth opportunities, along with a focus on work‑life balance.
- Remote flexibility: Preferable office presence in London but we consider remote candidates who can work in the UK.
As an equal‑opportunity employer, we do not discriminate on the basis of any protected attribute. Our commitment is to provide equal opportunities, an inclusive work environment, and fairness for everyone.
#J-18808-Ljbffr”, “datePosted”: “2026-05-04”, “hiringOrganization”: { “@type”: “Organization”, “name”: “Octopus Energy”, “sameAs”: “https://uk.whatjobs.com/pub_api__cpl__422602139__4861?utm_campaign=publisher&utm_medium=api&utm_source=4861&geoID=33” }, “jobLocation”: { “@type”: “Place”, “address”: { “@type”: “PostalAddress”, “addressLocality”: “London” } } }Octopus Energy started with a bold idea: to build Britain’s first truly digital energy supplier. By combining world‑class tech with brilliant humans who care deeply about customers and driving the renewable energy transition, we made it happen and in 2025, we became Britain’s largest energy supplier.
Now, we’re scaling fast and building the next generation of products to accelerate the green energy transition. From making it effortless to switch to heat pumps, solar and EVs, to launching smart tariffs and creating renewable generation at scale, we’re solving some of the most complex challenges in energy with speed, creativity and customer obsession. We’re also enabling our global businesses to reach the full capability of what we’ve achieved in the UK, taking the learnings, products and experiences that customers love here and rolling them out worldwide.
At Octopus Tech, you’ll have real ownership, variety, and the chance to shape products that make a tangible difference in people’s lives—lowering bills, enabling greener living, and delivering experiences customers genuinely love. You’ll work side by side with teams across marketing, operations, and data, and see the impact of your work in the real world, fast.
What you’ll need
- 5+ years of professional experience in backend web application development
- Hands‑on experience with Python/Django or equivalent web frameworks
- Strong systems design abilities, including microservices architecture
- Experience designing and operating RDBMS (e.g., PostgreSQL, MySQL)
- Experience with secure, reliable, large‑scale/high‑transaction systems
- Experience developing and operating systems in cloud environments (AWS, GCP, or Azure)
- A self‑sufficient person with a high level of initiative, able to work autonomously in a fast‑changing environment
- A strong team player who collaborates across teams and departments, mentoring and coaching more junior developers
- Someone excited to solve social challenges through technology
- Interest in environmental issues and the energy industry
We’re looking for someone with a general interest in technology and problem‑solving; someone diligent and thoughtful. It would be helpful to have experience/expertise in the following (in rough priority order):
- Python
- Django (or equivalent web framework)
- Domain modelling
- Designing distributed systems, improving service reliability, and shaping long‑term architectural strategy
- HTTP and REST APIs, GraphQL and other API technologies
- Writing robust and fault‑tolerant software
- Celery and async processing
- Postgres
- Plus experience in the following would be a bonus: AWS, Terraform, Packer, Consul
Why else you’ll love it here
- Salary transparency: We discuss compensation during the interview process to match your experience with the correct salary band.
- Culture: An environment where people learn, decide, and build quickly, with autonomy and meaningful impact.
- Benefits: Competitive health, pension, and growth opportunities, along with a focus on work‑life balance.
- Remote flexibility: Preferable office presence in London but we consider remote candidates who can work in the UK.
As an equal‑opportunity employer, we do not discriminate on the basis of any protected attribute. Our commitment is to provide equal opportunities, an inclusive work environment, and fairness for everyone.
#J-18808-Ljbffr…