Senior Product Engineer
Fleek · London · senior
Fleek · London · senior
The fashion industry produces over 100 billion garments a year. 60% end up in landfill, not because people don't want these clothes, but because the supply chain for getting secondhand fashion from donation to resale is completely offline, manual, and broken.
Fleek is fixing this. Our mission is to make secondhand the first choice. We're building the infrastructure powering the global secondhand clothing trade, through a B2B marketplace and the AI systems digitising the supply chain behind it.
Through Fleek, vintage stores, online resellers, and retail buyers source graded secondhand inventory directly from wholesalers and rag houses across multiple countries. Our key enabler is FleekSort, an AI model fine-tuned on secondhand fashion, that can grade, price, and categorise items with just a photo, turning what has historically been an opaque and manual trade into a structured, searchable, and tradable global inventory layer.
Since 2022, we've saved 9 million items from landfill while tripling in size year-on-year. We're backed by some of the world's best investors, including a16z, Y Combinator, and HV Capital, alongside world-class angels who helped build Depop, Shopify, and Postmates.
Today, we serve thousands of resellers and retailers across the UK, Europe, and the US. With the secondhand fashion market projected to reach $350B by 2027, Fleek is building the AI-native operational and financial backbone for secondhand commerce globally.
We're looking for people who want to build something that matters, and move fast doing it. Sound good? Keep reading.
This is a Senior Product Engineer (backend) role in Fleek's product engineering team. You'll report into our CTO, Sanket Agarwal (ex-Google, Postmates), and work embedded with a product manager and designer in a small, senior squad focused on the core marketplace experience.
Fleek is digitising an industry that has never had technology. There are no existing playbooks for building an ecommerce experience around secondhand fashion at wholesale scale, where every item is unique, inventory is unpredictable, quality is graded by AI, and the supply chain spans three continents. You will be designing how the transaction layer works for a market that hasn't existed before.
You will be on our Growth team, owning the ecommerce journey from discovery to checkout, payment and credit systems, order management, and seller tools. Your systems will handle 500,000+ items a month today and million+ by the end of the year.
AI is at the core of everything we do, so you'll work closely with our data and AI teams to build the backend services that connect FleekSort's classification engine to the marketplace experience.
We're looking for a product engineer who can think about how systems affect buyers and sellers at scale. You'll be expected to understand the business problems your code solves, and challenge whether we're solving the right ones.
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Fleek · London