Rejobs
Octopus Energy

Senior Backend Engineer - Python

Vi søger en Senior Backend Engineer til Octopus Energy i Tokyo. I denne rolle vil du lede backend-udviklingen af innovative energiprodukter og fokusere på skalerbare tjenester. Se frem til et dynamisk arbejdsmiljø og en reel indflydelse på overgangen til vedvarende energi.
Octopus Energy
Octopus Energy
Tokyo, Japan   Hybrid   Fuldtid  UTC+09:00

Octopus Energy

Virksomhedsoversigt

Octopus Energy

London, Storbritannien

2015

Forretningsmodel

Energi

Levering af elektricitet og gas, fokus på vedvarende energikilder

Salgsindtægter fra energiforsyning, partnerskaber med vedvarende energikilder

Lokationer & Geografi

Primært i Storbritannien, men også i Australien, Tyskland, Japan og USA

Virksomhedskultur

Deres mission er at gøre energi billigere, grønnere og mere tilgængelig for alle.

De fremmer en åben og inkluderende kultur, hvor innovation og bæredygtighed er i fokus.

De tilbyder løbende træning og udviklingsmuligheder for deres medarbejdere.

Aktiviteter & Projekter

Implementering af smart grid-teknologi og udvikling af innovative energiløsninger.

Udvikling af en platform til at optimere energiforbrug og integration af vedvarende energikilder.

Fokus på 100% vedvarende energi og reduktion af CO2-aftryk.

Karrieremuligheder

Typiske jobåbninger inkluderer energikonsulenter, softwareudviklere og projektledere.

De tilbyder fleksible arbejdstider, sundhedsforsikring og muligheder for fjernarbejde.

Kontaktinformation

LinkedIn

Karrierer hos Octopus Energy


Sidst opdateret den 2025-09-16 | Rapporter et problem

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 earlier this year, we became Britain's largest energy supplier.

In 2021, we brought this mission to Japan – the world’s largest liberalised energy market. Here, we are committed to making energy better for both customers and the planet, while driving the growth of green energy across the country. In our lean and fast-moving team in Japan, every idea and action has the power to create a real impact on both business and society.

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. Here in Japan we’re following in the footsteps of the UK, taking their learnings, and adopting products and experiences that customers love.

As a member of the Octopus Tech Team, 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 customer service, sales & marketing, operations, finance and data, and see the impact of your work in the real world, fast.

We’re looking for people who want to take part in this journey and help shape the future of energy in Japan. If this sounds exciting, we'd love to chat.

There’s a couple of things you should be aware of about this role. You will initially be employed by Kraken Tech Japan, our sister company in Japan, then, at some future time, transfer your employment to Octopus along with other tech staff in our other markets across the world.

We’re expanding the scope of our tech team, and we are looking for a Backend Engineer to join our team to lead backend development on some exciting new products. You will play a key role in leading the backend domain and building scalable, reliable services that power the future of energy in Japan.

What you’ll do…

  • Develop and operate Octopus Energy’s core global backend system
  • Build and operate Octopus Energy products for the Japanese market (with many on the horizon)
  • Design and develop APIs to integrate with other systems and services
  • Collaborate with international teams (UK, EU, APAC and USA) in global development projects

What you’ll need…

  • 3+ years of professional experience in backend web application development
  • Hands-on experience with Python/Django or equivalent web frameworks
  • Experience designing and operating RDBMS (e.g., PostgreSQL, MySQL)
  • Experience in team development using Git
  • Experience with large-scale or high-transaction systems
  • Experience developing and operating systems in cloud environments (AWS, GCP, or Azure)
  • Experience with microservice architecture
  • Ability to communicate in English (participating in meetings and discussions, reading and writing)
  • Interest in environmental issues and the energy industry

What We’re Looking For…

  • A self-sufficient person with a high level of initiative and who enjoys working in a fast-changing environment and can work autonomously
  • A strong team player who collaborates across teams and departments
  • Someone excited to solve social challenges through technology
  • Ability to communicate in English is essential

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 equiv. web framework)
  • Domain modelling
  • 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
  • Ability to speak Japanese would be a plus

We would prefer someone who can work in our Tokyo office but will consider remote candidates. However, you do need to be able to work in Japan.

Our process usually takes up to 4 weeks, but we’ll always do our best to flex around what works for you. Along the way, you’ll chat with our recruitment team and your Recruiter will help you throughout different stages. Got any burning questions before then? Drop us a message at [email protected] and we’d love to help!

If this sounds like you then we'd love to hear from you. 🚀

Are you ready for a career with us? We want to ensure you have all the tools and environment you need to unleash your potential. Need any specific accommodations? Whether you require specific accommodations or have a unique preference, let us know, and we'll do what we can to customise your interview process for comfort and maximum magic!

Studies have shown that some groups of people, like women, are less likely to apply to a role unless they meet 100% of the job requirements. Whoever you are, if you like one of our jobs, we encourage you to apply as you might just be the candidate we hire. Across Octopus, we're looking for genuinely decent people who are honest and empathetic. Our people are our strongest asset and the unique skills and perspectives people bring to the team are the driving force of our success. 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.

Få jobvarsler

Få jobalarmer for muligheder i Tokyo, Japan

Om rollen

20. september 2025

Fuldtid

Virksomhed

29. september 2025

Hybrid

Octopus Energy

  •  Tokyo, Japan

3+ years of professional experience

UTC+09:00

Ansøg nu

Job udløbet?

Lad venligst Octopus Energy vide, at du fandt dette job på Rejobs. Dette vil hjælpe os med at vokse og få flere mennesker til at arbejde med vedvarende energi!

Hvordan du er forbundet via LinkedIn

Se forbindelser

Se dine kontakter hos Octopus EnergyLinkedIn for at udnytte dit netværk, når du søger denne stilling.

Lignende job i nærheden af Tokyo, Japan

Del med venner

Indsatserne er høje, og tiden til snak er forbi. Nu er det tid til handling. Hjælp en ven med at fremskynde overgangen til en bæredygtig fremtid.

Del dette job - Senior Backend Engineer - Python - med dine venner, og hjælp dem med at finde en karriere, de kan være stolte af.