Senior Software Engineer (Backend - Python/Django)

• Leadership & Execution: Take on large milestones, driving their direction and cadence to consistently hit target dates while managing technical trade-offs.
• Cross-Domain Bridge: Connect your team with related teams on cross-functional projects, quickly catching up on unfamiliar concepts and identifying critical points across domains.
• Communication & Risk Management: Articulate technical points clearly across domains and to stakeholders at all levels of technical literacy using a “strong opinions, loosely held” approach.
• Documentation & Standards: Set standards through your code and actions, ensure features and rollouts are thoroughly documented, and raise the engineering bar across the organization.
• Mentorship: Sponsor and mentor engineers, helping them grow and reach the standards needed for promotion.

What You’ll Bring To The Party

• Python & Django (or equivalent web framework)
• Domain modeling and architectural design
• GraphQL
• Writing robust and fault-tolerant software
• Celery and async processing
• PostgreSQL

️Bonus Points

• AWS, Terraform, Kubernetes
• Experience with one or more frontend frameworks

• Senior Engineers have not only strong engineering skills, but the ability to make cross-team and organizational impacts.
• Technical & Architectural Ownership: Build robust, fault-tolerant software using Python, Django, GraphQL, Celery, and PostgreSQL. Apply deep architectural knowledge (e.g., separation of concerns, interfaces and refactoring practices like the Strangler Fig pattern or Chesterton’s Fence) to solve complex domain modeling challenges.

• 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
• Equity Options Scheme - you own your own part of the business, share options in Kraken so we all work together towards success
• Office - have a certain tech requirement? We’ll do our best to get it. We also have drinks, snacks and a coffee machine at the office space on Bourke street.
• Your development is important - we support and help with development including internal and external courses, learning, study support etc, all bespoke to you

Kraken is a certified Great Place to Work in France, Germany, Spain, Japan, Australia, and USA. In the UK we are one of the Best Workplaces on Glassdoor with a score of 4.5. Check out our Welcome to the Jungle site (FR/EN) to learn more about our teams and culture.

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

Kraken’s technology is written and maintained by a multi-discipline engineering team of around 1,400 people globally, which includes server-side, client-side, and mobile engineers. We follow an agile way of working, where individual teams are given the freedom to choose the tools that are most appropriate for managing their work.

Kraken is a great place to learn, work with talented engineers and level-up your skills. Some of our coding conventions are open-source.

This role is available remotely within Japan or hybrid from Tokyo

Our technology

Our backend developers use Python. Most of our websites are powered by Django and GraphQL (Graphene). Our CircleCI CI/CD pipeline runs tens of thousands of tests, deploying into AWS EKS defined by Terraform over 100 times per day and observed with tools like Sentry and Datadog. This allows us to move fast and at scale, without compromising reliability. Teams work differently but the commitment to quality is the same.

Developers at Kraken are empowered to use cutting-edge AI tools and models. Any generated code is still owned by a human.

What We Do

Kraken Engineering has multiple disciplinary groups with their own management structures and teams working together to create a unified Kraken that can be deployed to any territory in the world to achieve clients’ goals.

At Kraken, you won’t be boxed into one rigid path. Depending on your strengths and interests, you might find yourself modeling local energy markets, scaling a financial product across international territories, or driving the core comms engine behind all Kraken communications. Alternatively, you could be working directly with clients to enhance Kraken to solve their business needs or localise a particular market and help onboard their customers into the system. Whichever team you join, you’ll be solving complex problems with a group of genuinely great people.