Job title: Engineer II
Location: London / Bristol / Edinburgh - Hybrid
Salary: £46,000 - £60,000
Reporting to: Software Engineering Manager
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. Leveraging Data, AI, and real-time decision-making we turn energy complexity into growth opportunities for our partners.
By combining predictive algorithms with human-centred design, Kaluza makes clean energy dependable and affordable.
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 part of the team building Kaluza’s Energy Retail platform, designing and delivering scalable frontend features using TypeScript and React. You’ll work on large-scale applications used by both customers and internal teams, shaping intuitive user experiences on top of complex systems.
You’ll take ownership of features from discovery through to release and ongoing improvement, contributing to architectural decisions and evolving patterns as the codebase grows. Alongside collaborating with product managers, designers, and backend engineers, you’ll build shared components and tooling, write well-tested code, and continuously improve performance, scalability, and overall quality.
About You
Ideally you’ll have:
- Experience building production frontend applications with TypeScript and React
- A good understanding of component architecture, state management, and patterns for scaling React applications
- Experience delivering meaningful features or systems with a degree of ownership
- Comfort thinking about performance, reliability, and long-term maintainability
- Experience with end-to-end testing in modern frontend environments
- Confidence collaborating across disciplines and contributing to technical discussions
- An interest in solving real customer problems, not just shipping code
What will set you apart:
- Familiarity with monorepo tooling such as Nx or Turborepo.
Why might this role not suit you?
We are going through a period of significant evolution which is exciting and with it brings lots of opportunity and challenging work, which is not for everyone. To be successful in this role, you will be excellent at operating in ambiguous, changing environments, balancing multiple priorities simultaneously and get enjoyment from making the complex, simple.
Our Interview Process
We run a transparent process designed to reflect the kind of work you’d do here.
Initial Call with Talent Acquisition (30 minutes)
An introduction to Kaluza, the team, and your experience, with time to answer any initial questions.
First Stage (1 hour)
A conversation with a hiring manager covering both technical topics and ways of working. This includes a short live coding exercise.
Final Stage (3 hours total)
This stage includes three sessions, usually scheduled separately, though we can accommodate completing them in a single day if you prefer:
- Pairing - A collaborative session where you’ll work through a practical task with one of our engineers, focusing on problem-solving, clean code, and communication.
- System Design - Explores how you approach more complex problems, including designing scalable, reliable systems.
- Behavioural - Focuses on collaboration, problem-solving, and how you deliver value for customers, using real examples from your experience.
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.
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.
You can also find our Applicant Data Protection Policy here.
Top Skills
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.
