Lead Software Engineer

Company: La Fosse
Apply for the Lead Software Engineer
Location: London
Job Description:

Lead Full Stack Engineer | Climate Tech | £120k + Equity | Hybrid (2 days a week in London or Bristol)

Help build the platform powering the UK’s transition to low-carbon energy.

This is a VC-backed green tech scale-up already used by 500+ businesses now expanding beyond heat pumps into solar, battery, and the future of home energy.

Real scale. Real users. Real impact.

The Role

You’ll sit at the core of engineering:

  • Own architecture across key product areas
  • Build end-to-end systems (FE → BE → data)
  • Write the hard stuff: high-impact, high-leverage code
  • Work directly with product on what to build, not just how
  • Spot scaling issues early and fix them
  • Mentor engineers and raise the bar

Tech

  • React, TypeScript
  • Node, Prisma
  • PostgresSQL / PostGIS
  • Docker, Docker Compose

Lead Full Stack Engineer | Climate Tech | £120k + Equity | Hybrid (2 days a week in London or Bristol)

Posted: June 1st, 2026