Senior Software Engineer - Comms

AI Foundations (F/H/X); Greater London; On-site; GBP 70,000 - 110,000; Full time

Job summary

Kraken is seeking a skilled software engineer to join its Comms team in the UK. You will build real-time communication tech for customer channels, with a focus on voice and telephony, using Python and Django to deliver robust, scalable services.

You’ll work with event streams, queues and asynchronous processes to manage interactions, integrate third‑party providers such as Twilio, and help Kraken continuously improve reliability and the customer experience.

Qualifications

• Experience building real-time, fault-tolerant systems.
• Strong knowledge of Python/Django web apps.
• Experience integrating with third-party providers.
• Ability to work across engineering, product and operations.

Responsibilities

• Build and maintain real-time communication channels.
• Develop reliable, event-driven systems.
• Handle voice telephony and call state changes.
• Integrate with third-party providers like Twilio.
• Collaborate with engineers, product and support teams.
• Shape technical direction of the Comms team.
• Take ownership of projects to improve reliability and scalability.
• Progress toward a people leadership role.

Skills

Python

Django

REST APIs

Event-driven systems

Test Driven Development

Domain driven design

Robust software engineering

React and Redux

Tools

Celery

Postgres

AWS

HTMX

Job description

Help us use technology to make a big green dent in the universe! Kraken https://kraken.tech/ 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.

THE TEAM

The Comms team builds and manages the technology that enables Kraken to communicate with customers across multiple channels, including phone, email, live chat and physical post. The team is responsible for both the underlying systems and the product features that support these customer interactions. A key area of the team is voice and telephony, where they build the technology used by energy and support specialists to speak with customers. This includes managing real‑time calls, handling customers and specialists joining or leaving calls, responding to connection and network issues, and ensuring calls can be reliably maintained or recovered when problems occur. Unlike more traditional transactional backend systems, much of the Comms technology is highly real-time and event-driven. The team works with event streams, queues and continuously changing system states to manage interactions as they happen. The team also integrates with third‑party communication providers, such as Twilio, which supports Kraken’s phone networks and email sending. Overall, Comms sits at the intersection of engineering, product and customer operations, building the technology that enables Kraken’s customer‑facing teams to communicate effectively and reliably with customers.

WHAT YOU’LL DO

• Build and maintain the real-time technology that enables Kraken’s customer communication channels, with a particular focus on voice and telephony.
• Develop reliable, event-driven systems that handle continuously changing states and interactions in real time.
• Work with event streams, queues and asynchronous processes to manage customer and energy specialist interactions.
• Build product features and tooling used by Kraken’s energy and support specialists to communicate with customers.
• Solve complex real-time challenges, such as customers or specialists joining and leaving calls, connection issues and dropped calls.
• Integrate Kraken’s systems with third‑party communication providers, including platforms such as Twilio.
• Work closely with engineers, product teams and customer‑facing teams to understand problems and build effective solutions.
• Help shape the technical direction of the Comms team as it grows, contributing to how the team’s focus, systems and ways of working evolve.
• Take ownership of projects and contribute to improving the reliability, scalability and overall experience of Kraken’s communication systems.
• Develop towards a people leadership role as the Comms team continues to grow.

WHAT YOU'LL NEED

• Python
• Django (or equiv. web framework)
• HTTP and REST APIs
• Celery and async processing
• Postgres
• AWS
• HTMX
• React and Redux
• Test Driven Development
• Domain driven design and modelling
• Experience working with event‑driven, realtime systems
• Writing robust and fault‑tolerant software

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 [e-mail]. 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 https://kraken.tech/candidate-privacy-notice, (ii) Website Privacy Notice https://kraken.tech/privacy-notice and (iii) Cookie Notice https://kraken.tech/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.