Software Engineer

Sorry, this job was removed at 08:18 p.m. (CST) on Tuesday, Jun 03, 2025
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London, Greater London, England
In-Office
Software • Energy
The Role

Job title: Engineer II

Location: London, Bristol or Edinburgh (including Hybrid)

Salary: £55,000 - £68,000

Kaluza reimagines energy to bring net-zero within everyone’s reach. The Kaluza Platform enables energy utilities to unlock the full value of a radically changing energy system and propel us to a future where renewable energy is sustainable, affordable and accessible for all. 

From automating and simplifying core operations including billing to create a lower-cost, higher-engagement experience, to optimising energy usage across smart devices in the home, we turn tough challenges into win-win-win outcomes for customers, suppliers and the energy system. 

We have a strong flexible, hybrid working ethos, we aim to be as flexible as possible to balance work with life. Teams can choose how and where to work, whether it’s from one of our lovely offices or from home or a mixture of both. Each team is different but we do like to get together monthly/quarterly as teams - if they are not at your local office we will cover the costs of travel and accommodation if necessary. As a company we come together annually for our conference and end of year celebrations! 

Where in the world of Kaluza will I be working? 

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.

Where in the world of Kaluza will I be working? 

You’ll be working on the Kaluza’s Energy Retail platform. This is a SaaS technology platform that aims to revolutionise the operating platforms for energy retailers globally. This platform has been built with scale and technical quality in mind and is the foundation for decarbonisation efforts by Kaluza’s customers. 

We use a diverse set of technologies to deliver our services. We don’t expect you to arrive with experience of all of them, but you can expect to learn about and get hands-on with many technologies, including Typescript, Scala, AWS, Terraform, Kafka and Datadog. 

We believe our team members should have the possibility to be involved in all aspects of our delivery. From the outset, you will be involved in all team activities including development, design, support and testing to name a few. We do not expect you to have a wealth of knowledge in our domain as this is something you can build up over time with the help of our experienced engineering team.

What We’re Looking For

  • Strong experience developing backend applications in TypeScript.
  • Experience with database design and optimization (SQL or NoSQL).
  • Understanding of event-driven systems and message queues.
  • Knowledge of cloud platforms (ideally within AWS) and serverless architectures is a plus.
  • A passion for building high-quality software with a strong customer focus.
  • A proactive and problem-solving mindset, thriving in ambiguity.
  • A strong team player who enjoys working collaboratively and sharing knowledge.

If you’re passionate about building robust backend systems but perhaps don't have deep experience with TypeScript but keen on learning, we’d love to hear from you.

Kaluza Values

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

We’re on a mission, We build together, We’re inclusive, We get it done, We communicate with purpose.

Read more about our values over on our careers site.

From us you’ll get

  • 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 at Work - access to thousands of retail discounts
  • 5% Flex Fund to spend on the benefits you want most
  • 26 days holiday
  • Flexible bank holidays, giving you an additional 8 days which you can choose to take whenever you like
  • Progressive leave policies with no qualifying service periods, including 26 weeks full pay if you have a new addition to your family 
  • Dedicated personal learning and home office budgets
  • Flexible working — we trust you to work in a way that suits your lifestyle
  • And more…

Even better? You’ll have access to these benefits from day 1 when you join.

We want the best people

We’re keen to meet people from all walks of life — our view is that the more inclusive we are, the better our work will be. We want to build teams which represent a variety of experiences, perspectives and skills, and we recognise talent on the basis of merit and potential.

We understand some people may not apply for jobs unless they tick every box. But if you're excited about joining us and think you have some of what we're looking for, even if you're not 100% sure, we'd still love to hear from you.

Find out more about working in Kaluza on our careers page and LinkedIn. 


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The Company
HQ: London
494 Employees

What We Do

Kaluza is an energy software company powering the future of energy. From revolutionising billing to smart electric vehicle charging, Kaluza’s technology is empowering some of the biggest energy suppliers to better serve millions of customers. Its real-time cloud platform transforms supplier operations, reducing cost to serve and boosting customer engagement. Powered by Kaluza, suppliers can invest in innovating for tomorrow’s customers and drive decarbonisation with smart, low carbon technologies that not only reduce energy bills, but lay the foundations for a more flexible energy system.

Kaluza is a B Corp-certified business with over 450 employees across seven global hubs.

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