Founding AI Product Engineer Equity and Energy Infra

Atarus; Greater London; On-site; GBP 90,000 - 150,000; Full time

Job summary

Atarus, a well-funded AI startup, is hiring a Founding AI Product Engineer to join the founders in London. You will blend full-stack product engineering with sophisticated LLM systems to own complex workflows and production-grade AI features.

You will lead production LLM agents, multi-agent workflows, and human-in-the-loop review processes, while delivering data-heavy frontend products for professional users. A strong product instinct and full-stack versatility are essential.

Qualifications

• 4+ years of strong software engineering experience with production work on LLMs, agents and context engineering.
• Experience across full-stack product engineering and end-to-end feature delivery.

Responsibilities

• Own production LLM agents and multi-agent workflows.
• Implement human-in-the-loop systems to review and verify AI outputs.
• Develop data-heavy frontend products for complex professional workflows.
• Delivers features end-to-end—from customer problem to production.

Skills

LLM systems

Agent architectures

Context engineering

Full-stack development

Product instincts

Tools

Python

React

Job description

Atarus, a well-funded AI startup, is hiring a Founding AI Product Engineer to join the founders in London. You will blend full-stack product engineering with sophisticated LLM systems to own complex workflows and production-grade AI features.

You will lead production LLM agents, multi-agent workflows, and human-in-the-loop review processes, while delivering data-heavy frontend products for professional users. A strong product instinct and full-stack versatility are essential.