Senior Software Engineer

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.

Kraken Markets own the pieces of Kraken which allow our clients to be participants in a regulated utility markets such as electricity, gas, water or telecommunications, regardless of their role (supplier, meter operator, distributor, vertically integrated etc). We have a combination of country-specific delivery teams and also develop global products to fulfil functionality cross-countries. Our group will also routinely be involved in the standing up and ongoing support of Kraken clients globally.

About Kraken Customer

What we do: build the most AI-driven, innovative, forward-thinking platform for energy management. From optimizing resources to delivering cost-effective, exceptional customer experiences through advanced Customer Information Systems (CIS), billing, meter data management, CRM, and AI-driven communications, Kraken is powering the next wave of innovation in the energy industry.

Why we do it: future energy will not look like energy as we know it today. We need to not just think about our future, but build for it. Now.

Our team

All technology is written and maintained by a multi-discipline engineering team of around 1500 people globally. Our engineers work in 'super teams' which are focused on key areas of our platform as well as other innovative products. This also includes server-side, client-side and mobile engineers working closely with UX experts, copywriters and designers. Teams are empowered to choose a way of working that works for them, often opting for a Kanban-like approach. Notion and Asana are then used to specify and manage work; Github, CircleCI and Terraform Enterprise as part of an immutable-infrastructure, continuous delivery pipeline; and Datadog, Sentry and Cloudwatch to measure performance and monitor production.

Your main focus will be to continue building Kraken's Market Gateway offering which will allow clients to communicate with other businesses using regulated message formats and protocols. Together with the rest of the team, you will bring the same revolutionary customer experience, operational excellence and speed of innovation that Kraken is powering across energy retailers to other sectors. Some of our coding conventions are open-source . Kraken is a great place to learn, work with some talented engineers and level-up your skills.

Our technology

As a backend developer, you will be working on internal services that communicate with other internal services via HTTP. When communicating with other companies, you'll be implementing whatever their specification needs, which to date has included technologies like SOAP, AS4, email, JSON over HTTP, XML over HTTP, and SFTP. This list is not exhaustive.

Our services are written in Python and Scala. Our Scala code uses the Typelevel ecosystem extensively. Our Python code uses FastAPI and Pydantic extensively. We use open source technologies to underpin our backend services, things like Apache Kafka, Postgres, nginx, and Kubernetes.

Our infrastructure is expressed as code using OpenTofu (the FOSS fork of Terraform).

We're looking for someone who's passionate about code, curious, and eager to learn. You'll be working alongside other talented people in the tech department. You'll solve problems with technology to make us, and the industry, smarter and better for customers.

• 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):

• Scala, using an effect system like Cats Effect.
• Domain modelling
• HTTP and REST APIs
• Writing robust, fault-tolerant and observable software
• Apache Kafka and event based architecture
• Postgres or other relational databases
• Kubernetes
• Python

Plus experience in the following would be a bonus:

• Terraform, OpenTofu
• CircleCI

• You and the Market Gateway team will be continuing to build a Market Gateway product for global clients and territories.
• You will be involved in designing and developing new features for the Market Gateway
• You will be interacting with members of other teams that use the Market Gateway to solve problems that they are having.
• You will be keeping the lights on; Responding to incidents, triaging bugs, coding up fixes and deploying and monitoring the product continuously.
• You will be working closely with the Market Gateway Tech Lead and Product manager.
• You will be writing, responding, and implementing tech proposals.
• You will be reading and writing documentation for Market Gateway

Kraken is a certified Great Place to Work in France, Germany, Spain, Japan and Australia. In the UK we are one of the Best Workplaces on Glassdoor with a score of 4.7. Check out our Welcome to the Jungle site (FR/EN) to learn more about our teams and culture.

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. If you have any specific accommodations or a unique preference, please contact us at 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. 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. U.S. based candidates can learn more about their EEO rights here.

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