Software Engineer II (Front End)

Location: London / Bristol / Edinburgh - Hybrid

Salary: £46,000 - £60,000

Reporting to: Software Engineering Manager

Visa sponsorship: At this time, we are not able to offer visa sponsorship for this role.

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.

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
• Full Stack Experience

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

• Initial Call with Talent Acquisition (30 minutes)
• First Stage (1 hour)
• Final Stage (3 hours total)

Kaluza Values

• 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

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.