Senior Full Stack Python Developer (Up to £90,000 + Equity) at Early-stage climate tech startup

Job Title

Senior Full Stack Python Developer

Salary

Up to £90,000 + Equity

Company

Early-stage climate tech startup

Location

London, UK

Job Description

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.

Why this role is remarkable

• Rare founding-team opportunity to architect a greenfield AI platform from scratch with significant technical autonomy.
• Join a well-funded, mission-driven venture at the intersection of AI, IoT, and renewable energy adoption.
• Meaningful equity stake and direct influence on company trajectory while building technology that measurably reduces global carbon emissions.

What you will do

• Design and build real-time data pipelines and AI-powered optimization algorithms using Python (FastAPI/Django).
• Develop responsive 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.

The ideal candidate

• 5+ years of professional full-stack experience with strong 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.

Required skills

• AWS
• Django
• Full Stack Development
• Python
• React
• Cloud Infrastructure
• Data Pipelines

Required languages

English

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