Join Fleek to reinvent customer lifecycle marketing using an AI-first approach. As a Full-Stack Growth Builder, you will architect adaptive CRM systems and build stickiness-driving tools for resellers. Reporting to the VP of Growth, you will transform static marketing journeys into dynamic, automated engines that scale secondhand fashion as the world's first choice for commerce.
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Full-Stack Growth Builder at Fleek
We are looking for a technical Full-Stack Growth Builder to reinvent our lifecycle strategy using AI as a default toolkit. You'll architect dynamic, adaptive CRM systems and build tools that empower thousands of resellers globally to scale their businesses. If you're an AI-native builder who wants to own a critical growth lever and help fix the world's most broken supply chain, join us in London.
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Jack finds you jobs at companies like Fleek. Talk to Jack to get considered for roles that fit what you're great at.
Location
London, United Kingdom
Compensation
Not Disclosed
Company
Fleek
Role overview
Technology100 employees
Fleek is a global online marketplace specializing in wholesale second-hand fashion. The platform connects retailers and resellers with verified vintage wholesalers around the world, making it easier to source high-quality used clothing in bulk. Fleek addresses the fragmented and often offline supply chain of vintage apparel by providing a transparent, secure, and scalable solution for both buyers and sellers. Founded in 2021, Fleek serves thousands of resellers and retailers in over 70 countries, moving millions of vintage clothing items from a vast network of wholesale suppliers. The company is backed by prominent investors, including Y Combinator, and has raised significant funding to expand its market reach and technical capabilities.
What you will do
- Design and deploy smart, adaptive CRM systems that utilize real-time signals and AI to determine optimal messaging, timing, and channel selection for users.
- Build and maintain rigorous experimentation frameworks, using causal inference and lift testing to quantify the true incremental impact of lifecycle initiatives.
- Develop end-to-end tooling for resellers, such as cross-listing automation, to increase platform stickiness and help customers scale their own businesses.
Who this is a fit for
- A deeply technical builder who treats AI tools like Claude Code or Cursor as their default toolkit to ship production-quality code and systems rapidly.
- Strong analytical fluency in SQL and experience working with large, messy datasets to drive algorithmic decision-making and frequent, high-velocity experimentation.
- Proven ability to balance product intuition with technical execution, building systems that learn and evolve rather than relying on static, rules-based marketing journeys.
Why this role is remarkable
- Own the entire lifecycle strategy end-to-end for a high-growth marketplace, moving beyond campaign management to architecting intelligent, automated growth systems.
- Join a talent-dense, Series B company backed by top-tier investors like a16z and Y Combinator, operating in a market projected to reach $350B.
- Work directly under a VP of Growth with a proven track record of scaling platforms like Deliveroo from millions to hundreds of millions in revenue.
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.
Jack gets to know what you're great at and what you want next, then searches 15 million jobs daily and helps you discover roles at companies like this.
Meet Jack
What happens next?
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 your profile’s a match and Fleek wants to meet, Jill will make the intro. In the meantime, Jack will send you excellent alternatives.