Spruce

Climate Tech

LeadFullStackEngineer

£90–130k London, United Kingdom; Bristol, United Kingdom FULL TIME Remote Friendly
Market Sentiment
HIGH DEMAND

Neural analysis suggests this role is
optimal for Lead candidates.

The Brief

“Lead Full Stack Engineer at Spruce. Skills: Full Stack Engineering, Technical Leadership, System Architecture. Own architecture. Own technical strategy”

What You'll Achieve.

Halve installer time; Double sales conversion; Improve quality; Improve margins; Improve customer experience

Industry & Context.

Climate Tech
Problems you'll solve

Root cause analysis; Troubleshooting

Eligibility Requirements

Work from abroad, Min. 2 days in-person

What They're Looking For.

Must Have

Modern JavaScript / TypeScript, Frontend frameworks, Backend development, API design, Relational databases, Data modelling, Solving ambiguous problems, Mentoring teams, Building healthy teams

Nice to Have

First formal lead role, Led teams successfully

What You'll Do.

Own technical strategy

Design complex solutions

Guide complex solutions

Build complex solutions

Write reference implementations

Write foundational frameworks

Lead technical discussions

Make trade-offs explicit

Mentor senior engineers

Identify scaling risks

Identify technical debt

How You'll Work.

Team & Collaboration

Cross-functional teams; Product leadership; Designers; Engineers

Communication Scope

Technical discussions

Full Job Description

We're on a mission to make it simple and affordable for every home in the UK to be heated and powered by clean, green electricity. Our customers are the installers who are at the forefront of this transition, but who have historically been overlooked and left struggling with outdated, ineffectual software. Since getting started at beginning of 2024, we've grown exponentially, have raised several rounds of funding from top tier VCs, and now support over 700 heat pump installation businesses across the UK. We're looking for an exceptional Lead Engineer to help us move faster and go further as we start to expand outside heat pumps. Quick background on Spruce We've started with most challenging but ultimately most important part of the home energy transition: replacing boilers with heat pumps. 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 with their almost-magical ability to convert 1kW of electricity into 4kW of heat (🤯). The problem? The installation process is slow, fragmented, and painfully manual. This increases costs for homeowners, limits how fast installation businesses can grow, and makes it almost impossible to offer a heat pump when someone's boiler breaks down. We're fixing this. We've built an end-to-end operating system for heat pump installers — from initial enquiry through design and installation to compliance and paperwork. Relative to the best alternatives, Spruce now: - Halves the time installers spend per job; - Doubles sales conversion rates; and - Improves quality, margins, and customer experience. And we're only just getting started. With fresh investment and growing demand, we're now expanding into the rest of the home renewables supply chain – supporting manufacturers and merchants as well as installers, and enabling solar & battery installations alongside heat pumps. The Role As a Lead Full St

Free ATS check

Applying for this Lead Full Stack Engineer role?

Most applicants get filtered before a human reads their resume. See if yours makes the cut.

How to Apply on Ashby

  • Ashby is a fast modern ATS — most applications take under 3 minutes.
  • The resume parser is strong; verify parsed experience dates and job titles.
  • Custom screening questions are often scored algorithmically — answer completely.
  • Location field affects geo-based screening; use your actual metro area.

ANONYMOUS · UNFILTERED

What do employees actually say about Spruce?

Real rants from real employees. Read before you apply.

Read Company Rants →