AI-Driven Product Engineer (Full-Stack) — Equity

HartleyCo; Greater London; On-site; GBP 100,000 - 150,000; Full time

Benefits offered by this job

Equity

Private medical

Pension

30 days flexible remote work

Job summary

HartleyCo is seeking a Product Engineer for a London-on-site role. You will design and build full‑stack features and AI agents, working closely with users to understand workflows and drive rapid production delivery.

You’ll own features end‑to‑end, collaborate with AI and operations teams to ensure reliable automations, and contribute to scalable systems as usage grows, all in a fast-paced startup environment.

Qualifications

• Strong full-stack experience with modern web stacks.
• Hands-on experience building with LLMs and AI agents.
• Comfortable owning features end-to-end without detailed specs.
• Startup experience is a plus; drive and pace matter.

Responsibilities

• Collaborate with internal users to understand workflows and pain points.
• Design and build full-stack features and AI agents from idea to production.
• Work with AI and operations teams to ensure reliable and safe automations.
• Improve systems as usage grows and scale the product.

Skills

TypeScript

React

Node.js

LLMs

End-to-end ownership

Job description

HartleyCo is seeking a Product Engineer for a London-on-site role. You will design and build full‑stack features and AI agents, working closely with users to understand workflows and drive rapid production delivery.

You’ll own features end‑to‑end, collaborate with AI and operations teams to ensure reliable automations, and contribute to scalable systems as usage grows, all in a fast-paced startup environment.