We’re building the software backbone that will help the UK hit net zero by 2050 — and we’re doing it by hitting the number one issue in the UK: homes heated by gas boilers.
Spruce has grown from 0 to 400+ customers in under 18 months, with strong product–market fit, clear momentum, and a team that knows exactly where it’s going. Our ambition is big, our execution is strong — and now we’re looking for exceptional engineers at any level to help us move faster and go further.
Nearly 20% of the UK’s carbon emissions come from heating homes. There is no credible path to net zero without replacing gas and oil boilers — and today, heat pumps are the only scalable alternative.
The problem?
The installation process is slow, fragmented, and painfully manual. This limits how fast installers can grow, puts engineers off retraining, and makes it almost impossible to offer heat pumps when households need urgent heating.
We’re fixing this.
Spruce is building an end-to-end operating system for heat pump installers — from first enquiry through design, installation, and compliance. Our software:
We’ve only just started. With fresh investment and growing demand, our long-term vision is to become the operating system for the entire home renewables supply chain — think ServiceTitan × Procore × CAD, purpose-built for decarbonisation.
As a Lead Full Stack Engineer, you’ll sit at the intersection of hands-on technical work, team leadership, and product strategy.
You’ll still write code — especially the hard, high-leverage parts — but your impact will increasingly come from setting direction, unblocking others, and raising the bar across the team.
You’ll work closely with engineers, designers, and product leadership to ensure we’re building the right things, in the right way, at the right time.