Senior Software Engineer

About the Position

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.

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Responsibilities

• Design, build, and maintain scalable backend services using TypeScript and Node.js
• 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 NoSQL 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.

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Requirements

• Solid experience developing backend applications, ideally in TypeScript 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 NoSQL).
• 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.

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We Offer

• 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
• Progressive Leave Policy - With no qualifying service periods, including 26 weeks full pay if you have a new addition to your family
• Personal Learning Budget - Upskill, learn and grow!
• Home Office Budget
• And more!

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About the Company

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.

Kaluza Values

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

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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.