Product Engineer (£70k–£130k + 0.1%–1% Equity) at Architect

This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers.

She will pick the best candidates from Jack's network

The next step is to speak to Jack.

Job Title: Product Engineer

Salary: £70k–£130k + 0.1%–1% Equity

Company Description: Architect - Seed-stage AI startup rebuilding the internet

Job Description:
Join a high-performance team of five building the future of the web. As a generalist Product Engineer, you will ship features across the full stack to transform static websites into intelligent, real-time AI agents. You will work directly with the co-founders to create personalised, high-conversion experiences for every visitor.

Location: London, UK

Why this role is remarkable:

• Join as a founding-level engineer at a company defining a new category of living, breathing web experiences that adapt in real-time.

• Backed by £3.5M from top-tier investors including Project A, Concept Ventures, and Insiders Ventures to rebuild the fundamental architecture of the internet.

• Massive technical ownership and impact while working in an intense, high-craft, in-person environment in the heart of London.

What you will do:

• Ship end-to-end features across a modern stack including React, TypeScript, Node.js, and Temporal.io on GCP.

• Design and implement AI agent evaluations and integrations to ensure every generated website is unique and optimized for conversion.

• Take full ownership of outcomes, from architecting authentication systems to building complex frontend page experiences and reinforcement learning models.

The ideal candidate:

• Proven track record as a product-focused generalist with deep expertise in TypeScript and service-oriented backend architectures.

• Obsessive about craft and the "beautiful piece of wood on the back," writing maintainable, high-quality code at a rapid startup pace.

• Strong independent thinker with an interest in AI agents, LLMs, or workflow orchestration tools like Temporal.io.

Who are Jack & Jill?
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.

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.

Next steps
Step 1. Visit our website.
Step 2. Click 'Talk to Jack'.
Step 3. Talk to Jack so he can understand your experience and ambitions.
Step 4. Jack will make sure Jill (the AI agent working for the company) considers you for this role.
Step 5. If Jill thinks you're a great fit and her client wants to meet you, they will make the introduction.
Step 6. If not, Jack will find you excellent alternatives. All for free.

We never post fake jobs
This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network.
Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description.
We appreciate this can make them look a bit suspect, but there isn't much we can do about it.

Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.