Backed by First Round Capital.
About the role
The last ten seconds of an auction are the whole product. Hundreds of people who have been watching one card for a week all arrive at once, every one of them refreshing, every one of them bidding.
What they're looking for
- 5+ years building and scaling complex applications — Python, Postgres, AWS or comparable cloud infrastructure
- Modern frontend mastery. Deep experience with React, TypeScript, and building high-performance real-time UIs. Real-time is the operative word: this is not a CRUD screen
- Reliability under pressure. A track record of building systems that stay up when the stakes and the traffic are highest. You've been paged during the worst possible ten minutes
- AI pragmatism. You've taken LLMs or computer vision models and turned them into practical, user-facing features that solved a real business problem. Not a demo
- Product instincts. You don't build what's on the ticket. You understand the collector mindset and build things that delight them — and you can explain the why behind past work before you explain the how
- High agency. You thrive where you're expected to find the highest-leverage work and go execute it without a hand-holding manual
More about this role
Alt is unlocking the value of alternative assets, starting with the $5 B trading-card market. We let collectors buy, sell, vault, and finance their cards in one place and we are backed by leaders at Stripe, Coinbase, Seven Seven Six, and pro athletes like Tom Brady and Giannis Antetokounmpo. Our next frontier is real-time pricing at scale—the Alt Value that powers every trade, loan, and product on the platform.
The last ten seconds of an auction are the whole product. Hundreds of people who have been watching one card for a week all arrive at once, every one of them refreshing, every one of them bidding.
That's this job. You build and scale the high-concurrency bidding and listing systems behind nine figures of annual GMV, and you build the surfaces on top of them. Not one or the other. The low-latency backend logic that resolves a bid and the responsive real-time UI where a collector watches it land are the same feature, and they're both yours.
The number this team is measured on: auction GMV. Every system here either moves it or protects it.
The auction engine. Build and scale the high-concurrency bidding and listing systems that power nine-figure annual GMV. Thundering herd in...
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