Junior Software EngineerOctopus Energy

London, UK 09-07-2023
ClimateTech
CleanTech
Kraken is the technology behind Octopus Energy. 

About Octopus

Octopus Energy is an energy technology business founded in 2015. Our aim is to drive society’s transition to Net Zero by changing the way customers buy and use energy. To achieve this we:

- Build the technology we need to efficiently provide customers with amazing experiences and support - we’ve been a Which recommended supplier 4 years in a row and maintain a Trustpilot score of 4.8 stars.

- Challenge the tease and squeeze tactics of traditional energy pricing. We provide fair and transparent pricing that means all our customers get great value for the long term.

- Bring renewable energy to our customers - all our products are 100% renewable and we’re working to build new renewable generation right from the customer scale to the grid scale.

- Reinvent energy products with smart, data driven tariffs that help to balance customer demand with renewable generation. Our Octopus Agile Tariff, Tesla Energy Plan, Octopus Go EV and Agile Outgoing Solar tariff are all industry firsts and enable our customers to be active players in a renewable energy system.


Since 2015, we’ve grown to supply over 1.8 million customers in the UK. We’ve also spread our tentacles and opened energy retailers in the United States, Germany and Japan. Our in-house developed technology platform, Kraken, is licensed by retail giants including E.ON in the UK and Origin Energy in Australia.

About the role

At Octopus we’ve developed a data platform that provides data services to the business in the UK and our retail energy businesses around the world. The platform enables self-service of data analytics to hundreds of data hungry users as well as automation of all our data workflows from simple ETL jobs to ML training and prediction. 

The data platform team works across the whole customer domain on anything from natural language understanding of our customer communications to processing billions of smart meter readings to build customised smart energy tariffs.

As the volume, scope and geographical range of our data services rapidly expand, we’re looking for an experienced data engineer to join the team to help us build and maintain our data replication processes, platform, pipelines and data sources.

This is a fantastic opportunity to work on data problems that genuinely move us closer to Net Zero with a company that is passionate about building great technology to change the way customers use energy.

What you'll do

    • Build tools and services to improve our analytics pipelines
    • Work closely with the data science and analytics teams to maintain and develop our central data models in dbt
    • Build and maintain testing and documentation frameworks for our data sources
    • Work with the business to scope and deliver new data engineering projects and requirements
    • Maintain and build on our existing data infrastructure and tools
    • Support the internationalisation of our data infrastructure as we continue to grow globally

Our Data Stack

    • Python as our main programming language
    • Kubernetes for data services and task orchestration
    • Airflow purely for job scheduling and tracking
    • Circle CI for continuous deployment
    • Parquet and Delta file formats on S3 for data lake storage
    • Spark for data processing
    • dbt for data modelling
    • SparkSQL for analytics
    • Streamlet for data applications

What you'll have

    • First and foremost, a passion for writing high quality code
    • It would be helpful to have experience/expertise in the following (in rough priority order): 
    • Python
    • SQL
    • Experience modelling data for analytics - ideally experience using dbt as a modelling tool
    • Experience in assuring data quality
    • Experience deploying data services in a cloud environment (ideally AWS)
    • The projects will be varied and we’re looking for someone who can work autonomously and proactively to scope problems and solve and deliver pragmatic solutions

What you'll love about us

    • Our company culture - we won best company to work for in 2019 and our CEO, Greg has recorded a podcast about our culture and how we empower our people   
    • Flexible working environment - genuine work life balance here, we are in the top 5 companies in the UK, we treat you as a human, and do our best to make work and life merge smoothly together 
    • Holiday - 23 days plus bank holidays
    • Equity Options Scheme - you own your own part of the business, share options in the whole Octopus Energy Group so we all work together towards success 
    • Office culture - have a certain tech requirement? We’ll do our best to get it. Our offices are also stocked with fruit, breakfast, great coffee and soft drinks. Weekly on a Friday we all get together (this happens virtually too) for company updates and drinks - we call it Family Dinner 
    • Social Events - we sponsor YeoValley’s summer festival, valleyfest, every year for our big offsite Summer party (we take our kids too) and we also aim to have 3 parties a year 
    • Parents - get access to tax free childcare and maternity and paternity pay.  We’re always looking for new ways to support parents, during lockdown we created OctoKids TV to help keep your kids occupied and entertained 
    • Your development is important - we support and help with development including internal and external courses, learning, study support etc, all bespoke to you 
    • SmartPension Scheme - employer 5% employee 3% and you can contribute more 
    • Cycle to Work Scheme - to help lower your carbon footprint whilst good for your health
If this sounds like you then we'd love to hear from you.

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.

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