AI Engineer (£85K+ + Equity) at Stackfix

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: AI Engineer

Salary: £85K+ + Equity

Company Description: Stackfix - High-growth AI implementation firm backed by Tier 1 investors

Job Description:
You will bridge the gap between frontier AI and real-world business operations. Instead of building generic SaaS tools, you will deploy production-grade AI systems for PE funds and manufacturers. Working directly with repeat founders who sold companies to TikTok, you will own the end-to-end process of transforming workflows and growing client profits.

Location: London, UK

Why this role is remarkable:

• Learn directly from two exited founders (including a former TikTok engineering leader) in a high-intensity, apprenticeship-style environment.

• Gain deep expertise in frontier AI by building production systems that handle real transactions, rather than just experimenting with tutorials.

• Enjoy significant variety and ownership, shipping impactful solutions across diverse industries like logistics, ecommerce, and private equity within 4-9 month cycles.

What you will do:

• Build and deploy sophisticated AI systems and full-stack software that manage high-volume production workflows for enterprise clients.

• Interface directly with leadership at client sites to scope workflows and present high-impact AI transformation strategies.

• Own the full product lifecycle from initial technical discovery and architecture to shipping production-ready systems that generate real revenue.

The ideal candidate:

• 4+ years of full-stack software engineering experience with a proven track record of shipping production-grade systems.

• Demonstrates high agency and a passion for building through side projects, open-source contributions, or technical content creation.

• Exhibits a strong curiosity for business operations and a record of high performance in challenging environments (professional or personal).

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.