Product Engineer in City of London

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Job Description
Product Engineer | FastAPI, React, Supabase | Generative AI Start Up
Salary: Up to £100k + meaningful equity Location: Central London Offices, On-site (Please note: sponsorship is not available at this time.)
The Role
You’ll join a small, high-calibre engineering team building AI- products from the ground up. In this role, you will work across the full stack to architect, build, and ship production systems powering multimodal AI agents. You’ll design intuitive interaction models for human–AI collaboration, develop scalable backend services, and rapidly prototype new features at pace.
You’ll also work directly with the founding team to shape technical direction, defining the platform architecture and helping build a genuinely new category of agent-led product development. This is a true 0→1 engineering environment where you’ll have deep ownership and impact.
Non-Negotiables
Full-stack engineering experience with production delivery Ability to ship end-to-end features in containerised environments Comfortable navigating ambiguity, shifting priorities, and rapid experimentation Strong problem-solving mindset with ownership and resilience
Nice to Haves
Founder or founding engineer background Experience building interfaces for agentic workflows Exposure to LLMs, multimodal models, or agent UX (AX) Experience shaping technical strategy in early-stage teams
What You’ll Work With
FastAPI backend development React engineering and modern frontend tooling Supabase or similar cloud- backend tools LLM agent workflows: tool calling, memory, retries, context updates Human–AI interaction models and agent UX (AX) design System design, architecture evolution, and scaling pathways MCP integrations and multimodal agent capabilities
Why join
You’ll join a deeply AI- engineering culture where you’ll help define how humans and agents build products together. You will:
Influence core platform architecture during its foundational stage Build and iterate on multimodal agent systems Prototype and refine new models of human–agent collaboration Work closely with founders on strategy and product direction Be part of a high-intensity, supportive team obsessed with building exceptional products
Product Engineer | FastAPI, React, Supabase | Generative AI Start Up
If you are interested in applying for this job please press the Apply Button and follow the application process. Energy Jobline wishes you the very best of luck in your next career move.
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Location:
City Of London
Job Type:
FullTime
Category:
Engineer, Engineering

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