Join a high-intensity founding team as the lead technical hire building an AI platform to decarbonize building energy. You will architect and scale a full-stack Python and React ecosystem that optimizes heat pump performance in real-time. This 0-to-1 role offers direct product ownership and the chance to drive the global clean energy transition.
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Senior Full Stack Python Developer at Early-stage climate tech startup
Are you a Senior Python Developer ready to trade the corporate grind for founding-team intensity? This early-stage climate tech startup is looking for a powerhouse engineer to build an AI-driven platform from the ground up. You'll architect systems that turn buildings into flexible energy assets, cutting costs by 25% and accelerating decarbonization. With a base of £90k plus meaningful equity, this is a rare chance to own the technical roadmap of a mission-critical startup while making a tangible impact on the planet. If you thrive on autonomy and high-stakes building, this is your next move.
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Location
London, United Kingdom
Compensation
Up to £90k + Equity
Company
Confidential company
Role overview
About the company
Early-stage climate tech startup
What you will do
- Design and build real-time data pipelines and AI-powered optimization algorithms using Python (FastAPI/Django).
- Develop responsive, user-facing dashboards and control interfaces using React and Next.js for early design partners.
- Architect scalable cloud infrastructure on AWS and integrate directly with hardware APIs and home automation platforms.
Who this is a fit for
- 5+ years of professional full-stack experience with deep production expertise in Python web frameworks and React.
- A "builder" mindset with the intensity required for an early-stage startup and a track record of shipping 0-to-1 products.
- Strong computer science fundamentals and a genuine passion for building technology that accelerates the clean energy transition.
Why this role is remarkable
- Rare founding-team opportunity to architect a green-field AI platform from scratch with total technical autonomy.
- Join a well-funded, mission-driven venture at the intersection of three massive trends: AI, IoT, and renewable energy adoption.
- Meaningful equity stake and direct influence on company trajectory, building technology that measurably reduces global carbon emissions.
How Jack & Jill work together
I get to know what you’re great at, then find roles you’d never find yourself.Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.
I recruit from Jack’s network and make the intro when I spot a great match.And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.
Jack gets to know what you're great at and what you want next, then searches 15 million jobs daily and helps you discover roles at companies like this.
Meet Jack
What happens next?
Jack’s an AI agent for job searching and career coaching. He works for you.
Jill is the AI recruiter working for the company. She recruits from Jack’s network.
If your profile’s a match and Confidential company wants to meet, Jill will make the intro. In the meantime, Jack will send you excellent alternatives.