Mid & Senior JavaScript Engineers | Green Tech & AI | Full Stack | React.js / Node.js / TypeScript | London 2 Days Per Week | £50K - £120K + Healthy Equity

Company

I'm looking for Full Stack Engineers who are excited about elegant systems as they are about real-world impact. Their mission is to reduce carbon emissions in the UK building a razor sharp platform for heat pumps to be installed in homes up and down the Country.

You'll join a lean, talented team of engineers and work directly on tools that accelerate the energy transition — like:

• Automated design tools for heat pump systems
• A survey app for collecting property data on-site
• 2D/3D floorplan creators (maybe even with LiDAR and CV!)
• Country-wide data tools through large-scale scraping + mapping
• Hardware integrations (e.g. bluetooth laser measures, sensors)
• Offline-first/PWA apps for installers on the move

Tech Stack:

• React, TypeScript, Konva, Tailwind
• Node.js, PostGREST, Prisma
• PostgreSQL / PostGIS, Docker, Atlas
• (Sunsetting Python + FastAPI)

Requirements for Mid & Senior JavaScript Engineers | Green Tech & AI | Full Stack | React.js / Node.js / TypeScript | London 2 Days Per Week | £50K - £120K + Healthy Equity

• 2+ years commercial experience
• STEM Background
• React + TypeScript (you’re confident building fast, dynamic UIs)
• SQL and relational database design
• RESTful APIs and distributed systems
• Scalable and secure architectures
• Owning features end-to-end, from shaping the product idea to shipping the code.

Type of engineer for Mid & Senior JavaScript Engineers | Green Tech & AI | Full Stack | React.js / Node.js / TypeScript | London 2 Days Per Week | £50K - £120K + Healthy Equity

• You’re product-minded — you care about the user and the why behind every line of code.
• You’re impact-driven — you want to move fast and make a real dent in the climate crisis.
• You’re collaborative — you're excited to work closely with a tight-knit, in-person team.
• You’re into sustainable tech, heat pumps, or building a greener future.

Remuneration & Benefits

• £50,000 - £120,000 + meaningful equity
• 33 days holiday + work abroad up to 30 days/year
• Hybrid working between London & Bristol studios
• Work closely with a brilliant, mission-led team

If you want to hear more about the Mid & Senior JavaScript Engineers | Green Tech & AI | Full Stack | React.js / Node.js / TypeScript | London 2 Days Per Week | £50K - £120K + Healthy Equity please apply ASAP with a CV and we will give you a call if we think you are a match! 😊