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.
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London, UK£85K+ + Equity
Featured roleLondon, UK£85K+ + Equity
AI Engineer at Stackfix
Join Stackfix to bridge the gap between frontier AI and the real economy. Founded by repeat entrepreneurs who sold companies to TikTok, Stackfix builds production AI systems for massive businesses like PE funds and manufacturers. This isn't another generic chatbot startup; you'll be deploying AI that handles real-world transactions and solves complex operational problems. If you have 4+ years of full-stack experience and want to learn how to build a company alongside world-class founders in London, this is your training ground.
Overview
Why this role stands out
Company
Software Development2-10
Stackfix - High-growth AI implementation firm backed by Tier 1 investors
Responsibilities
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.
Candidate profile
Who this is a fit for
- 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).
What makes it remarkable
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.
Jack & Jill
How Jack & Jill work together
I get to know what you’re great at, then find roles you’d never find yourself.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.
I recruit from Jack’s network and make the intro when I spot a great match.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.
About Jack & Jill
Meet Jack
Jack gets to know what you are great at, what you want next, and makes sure Jill considers you for the right opportunities.
How does this work?
Jack's an AI agent for job searching and career coaching. He works for you.
Jill is the AI recruiter working for the company. She recruits from Jack's network.
If it's a match and the company wants to meet you, they'll make the intro. In the meantime, if you'd like, Jack will send you excellent alternatives.
Jack