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Lead Software Engineer

Kraken · London, UK

On-siteSeniorPosted 12 Aug 2026

What this role requires

3 requirements, read out of the advert rather than guessed from the job title:

Also mentioned, not required: HTTP, REST, Celery, English (B2). Worth having, but their absence is not what gets a CV filtered out.

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Job description

Help us use technology to make a big green dent in the universe!

Kraken powers some of the most innovative global developments in energy.

We create the technology that redefines utilities and unlocks a new energy system of the future. By optimising renewable generation, building a more intelligent grid, and empowering utilities to deliver an exceptional customer experience, our operating system is transforming the industry worldwide.

It’s an incredibly exciting time to work in energy. Join us on our mission to improve the lives of ONE BILLION humans within the decade and shape a cleaner, better future for everyone.

🏡 Where you'll fit in The Kraken Customer – Financials team owns the money side of Kraken Customer. It provides the billing engine, lets customers pay bills, and includes debt-management tooling. In practice, that means the team works on capabilities like:

calculating charges using pricing rules, usage, taxes, discounts, and credits;

Read the full description (29 more sections)

generating and issuing bills and other billing documents through the right channels;

payments and cashflow, including payment methods and confirmation of whether money actually moved;

bookkeeping and ledger operations, including balances, transactions, credits, payments, repayments, and transfers;

repayments/refunds and debt tracking workflows. 🚀 What you’ll own You’ll be responsible for leading a team of engineers, making decisions on how the team operates and setting the technical direction of the team.

This role will involve line management duties, as well as being hands on and close to the code.

You’ll be responsible for ensuring the quality of the code being delivered through thoughtful code review.

Your team will be building and maintaining the backend systems and support site for UK-based clients to support their electricity and gas operations.

You will gain a deep understanding of the inner workings of how the UK energy market operates and help shape our systems to improve them for our clients with a product mindset.

Work with other market teams, primarily the UK market teams to support their operations.

Work with client delivery to help prioritize, deliver and maintain work required by clients.

Be responsible for monitoring and alerting of production systems and where required, lead and manage incidents.

Help mentor, guide your team

🧠 What you bring to the party

We’re looking for someone with a general interest in technology and problem-solving; someone diligent and thoughtful

Your level will be Senior Software Engineer or above and we expect you to have experience/expertise in the following (in rough priority order):

Python and Django (or equivalent web framework) web development experience, as you will be asked to work on some full-stack projects

Domain modelling, and ability to quickly absorb information about a complex industry

HTTP and REST APIs

Writing robust and fault-tolerant software

Celery and async processing

Postgres

Experience being a technical leader in a team

We’re after someone who’s passionate about code, curious, and eager to learn. You’ll be solving problems with technology to help make us, and the industry, smarter and better for customers.

You'll be part of a talented tech team, working on meaningful solutions to real-world problems in an industry that needs innovation, care, and efficiency.

Are you ready for a career with us? We want to ensure you have the right tools and environment to unleash your potential. If you have any accommodation requests, please contact us at ----- We’ll do our best to tailor the experience to your needs so you can feel comfortable, confident and be at your best!

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’re looking for! At Kraken, we're creating a team of genuine, honest, empathetic people. 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. We consider all applicants without regard to race, colour, religion, national origin, age, sex, gender identity or expression, sexual orientation, marital or veteran status, disability, or any other legally protected status.

*Our (i) Applicant and Candidate Privacy Notice and Artificial Intelligence (AI) Notice , (ii) Website Privacy Notice and (iii) Cookie Notice govern the collection and use of your personal data in connection with your application and use of our website. These policies explain how we handle your data and outline your rights under applicable laws, including, but not limited to, the General Data Protection Regulation (GDPR) and the California Consumer Privacy Act (CCPA). Depending on your location, you may have the right to access, correct, or delete your information, object to processing, or withdraw consent. By applying, you acknowledge that you’ve read, understood and consent to these terms

Please note that, in line with our current recruitment policy, we are unable to offer visa sponsorship for this position; applicants must have the right to work in the country that they're applying to, at the time of application.*

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