Senior Software Engineer (Python/Django) in London

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’re a technology company focused on creating a smart, sustainable energy system. From optimising renewable generation, creating a more intelligent grid and enabling utilities to provide excellent customer experiences, our operating system for energy is transforming the industry around the world in a way that benefits everyone.

It’s a really exciting time in energy. Help us make a real impact on shaping a better, more sustainable future.

About the Team

We're on a mission to create intuitive, engaging, and scalable digital experiences for consumers - from customer signup journeys to campaign integrations and beyond, our projects are as diverse as our ideas, and we always keep users front and center.

Some of the things you might work on:

• Building dynamic dashboards that transform with each campaign theme
• Integrating LINE accounts so customers can sign up for campaigns with a single tap
• Blending promotional content seamlessly into core product functionality
• Surfacing real-time campaign performance through slick, interactive charts

We're not just building features - we're crafting flexible, maintainable, and scalable solutions that make life easier for both our partners and our internal teams. Our team’s still growing, which means you’ll be part of shaping how we work. We move fast, learn quickly, and care deeply about clean code, smart testing, and good monitoring. We believe great communication is key: we lean on quick face-to-face chats or huddles for fast-moving topics, and use Slack, Asana, and other async tools to keep things running smoothly in the background. We’re transparent, collaborative, and not afraid of a bit of trial-and-error. Expect regular reviews, lots of learning, and plenty of chances to make your mark.

About the Role

We're looking for a talented software engineer to help solve exciting challenges for our sustainability-focused energy retailer client. Our team members are passionate about technology and making a positive impact on the planet. They're self-motivated problem-solvers who love taking initiative and helping others grow while delivering great results for customers and teammates. We value people who are adaptable, collaborative, and thoughtful decision-makers. They embrace change, create an inclusive environment where everyone belongs, and stay calm under pressure while always being ready to help.

What you'll do:

• Design, build, and maintain high-performing, reliable code to meet the unique business needs.
• Improve code quality with daily basis small refactoring with better naming, better coupling, better tests.
• Collaborate with stakeholders via Product Manager to automate and improve real-world processes.
• Strive to find simple, elegant solutions—even for complex, region-specific requirements.
• Actively contribute to the codebase with a hands-on, problem-solving mindset.
• Support fellow engineers by pairing, giving thoughtful design and code reviews, and sharing knowledge to help everyone grow.
• Quickly investigate and resolve technical issues, including working with other teams when our operations or users are impacted.
• Follow a culture of frequent feedback, team retros, and regularly reviewing tools and workflows to keep improving how we work.
• Prioritize delighting both our customers and internal colleagues by designing intuitive, user-friendly experiences.
• Use monitoring tools (Sentry or Datadog) and identify the issues or discover opportunities to make our application more reliable.
• Place an emphasis on transparency, taking ownership and iterating on processes if something isn’t working—always aiming to deliver quality and value.

What you'll need:

• Python - experience with at least one web framework (Django, Flask, etc.)
• Domain modelling
• HTTP and REST APIs
• Writing robust and error-resistant code
• Celery and async processing
• Postgres
• Thoughtful problem-solving with attention to detail
• Strong communication and team collaboration skills
• Familiarity with Git and version control workflows

Nice-to-haves:

• Experience with front-end applications (React, TypeScript, etc.).
• Experience with GraphQL.
• Experience with AWS infrastructure.
• Experience with Infrastructure as Code (Terraform, etc.)

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 Kraken, 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.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.