Technical Lead

Technical Lead Location: Bristol (hybrid, three days a week in the office) Team: Engineering Contract: Permanent Reporting To: Software Engineering Manager Please note: This role requires an existing right to work in the UK. We can’t offer visa sponsorship, but we review sponsorship role by role, so keep an eye on our careers site for future opportunities. About Kaluza 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, 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. The role You’ll join the Kaluza Technology community: a large team of product-focused and data-led Product and Platform Engineers working at serious scale. Our ecosystem is primarily based on TypeScript and React, utilising GraphQL and Kafka, backed by AWS and Terraform. Our work and responsibilities are diverse and wide-ranging, so you will need to have a product-minded problem solving attitude first and foremost . As a Senior Engineer you’ll own a slice of the product end-to-end, from the first design conversation to running it in production, and you’ll build it with AI coding agents as your default. We’re looking for someone whose judgement is worth more than their typing speed. Engineers at Kaluza build with AI, and we mean that practically. From your first day you’ll have paid access to Claude Code, with a budget we don’t ration, and MCP access to the systems you need. Our tooling and conventions are evolving quickly, and you’ll have a heavy hand in defining how we build moving forward. What you’ll do • Set the technical direction for your team : be accountable for the solution designs and architecture decisions, work with your team on technical strategy, and assist them through ambiguity over the longer term. • Work across the stack over time: depending on the team you’ll work across the interface people use, the services behind it, and the APIs between them, in whatever stack your team runs. • Build with AI coding agents as your default: break work down so agents can execute it, direct them, review what they produce as carefully as a colleague’s PR, and maintain the tests and guardrails that let agent-written code merge safely. • Own the health of your services : SLOs and SLAs, operational health reviews, post-mortems, and the in-hours support rota, with your turn on the on-call rota alongside the team. • Coach the engineers around you : technical guidance for a mix of junior and senior engineers, pairing, and code review that teaches as well as gates. • Connect your team to the rest of Kaluza : work with other Tech Leads and Principal Engineers on the wider architecture, and represent your team where platform decisions and engineering standards are made. What you’ll bring These are the practices and behaviours we see most in our best tech leads and value deeply, but we don’t expect everyone to tick every single box. If you’re excited by the role and can see yourself thriving here, we’d love to hear from you. Ideally, you’ll have: • Experience with our tech stack: TypeScript and React, utilising GraphQL and Kafka, backed by AWS and Terraform. • Experience leading technical change : you’ve taken a new service or a major architecture change from idea through to running in production, and you