Senior Software Engineer

• Location
  :
  Bristol, London, Edinburgh UK Hybrid.

• Level
  : C3

• Team
  :
  Engineering

• Salary
  : £60,000 - £80,000

This role can be based in our London, Bristol or Edinburgh offices, and requires an existing right to work in the UK.

At this time, we are not able to offer visa sponsorship for this role. We are committed to building a diverse, global team and our sponsorship policy is evaluated on a role-by-role basis. We encourage you to keep an eye on our careers site to stay informed about future opportunities where we are able to offer visa sponsorship.

Kaluza is the Energy Intelligence Platform, turning energy complexity into seamless coordination. We help energy companies overcome today's challenges while accelerating the shift to a clean, electrified future.

Our platform orchestrates millions of real-time decisions across homes, devices, markets and grids. By combining predictive algorithms with human-centred design, Kaluza makes clean energy dependable, affordable and adaptive to everyday life.

With teams across Europe, North America, Asia and Australia, and a joint venture with Mitsubishi Corporation in Japan, we power leading companies including OVO, AGL and ENGIE, as well as innovators like Volvo and Volkswagen.

What will I be doing?

You'll be joining the Kaluza Technology community. We're a large team of both data-led and product focused Software and Production Engineers, pushing the boundaries of technology and working at an extraordinary scale.

As a collective we strive for engineering greatness and by ensuring best practices across the board of the community.

Our tech stack is fluid, but broadly you can find yourself working with:

Typescript, Node JS, Terraform, Git actions, Kubernetes, Docker, AWS, Kafka, GraphQL

Responsibilities

• Design, build, and maintain scalable backend services using Type Script and

• Work with event-driven systems and message queues to power real-time, reliable features.

• Collaborate with product managers, designers, and other engineers to build customer-focused solutions.

• Lead by example, contributing to high-quality code, mentoring others, and fostering best practices.

• Own services end-to-end, from architecture to production monitoring and continuous improvement.

• Optimise system performance and data design, working with SQL or No
  
  SQL databases as appropriate.

• Leverage cloud platforms (especially AWS) and serverless architectures to build reliable, scalable solutions.

• Contribute to a positive engineering culture by sharing knowledge and supporting your team.

About You

Ideally, you'll have/be:

• Solid experience developing backend applications, ideally in Type Script or a willingness to pick it up quickly.

• Understanding of event-driven systems and working with queues

• Extremely comfortable working with cloud infrastructure (AWS preferred), especially serverless technologies.

• Experience with database design, optimisation, and maintenance (SQL or No
  
  SQL).

• Passionate about high-quality software and solving real customer problems.

• Strong communication and collaboration skills, you enjoy mentoring and knowledge sharing.

• Proactive mindset and ability to thrive in ambiguity.

Where you'll work

We offer flexible working, with an expectation of 3 days a week in the office. This gives us the best of both: real time together to collaborate and build relationships, with the flexibility to work in the way that suits you best the rest of the week.

Here at Kaluza we have five core values that guide us as a business:

Play to win, Solve the real problem, Build trust every day, Own the outcome, Go further together.

• Pension Scheme

• Discretionary Bonus Scheme

• Private Medical Insurance + Virtual GP

• Life Assurance

• Access to Furthr - a Climate Action app

• Free Mortgage Advice and Eye Tests

• Perks…