Senior Backend Engineer

As a Senior Backend Engineer at Paxos Labs, you'll build Transit, our liquidity orchestration and distribution network for tokenized assets. Transit solves the core problem every asset issuer faces: how to reach liquidity and venues on day one without renting it at ruinous cost. You'll own systems end to end, from design through deployment and the on-call reality of moving real money.

What you'll do

• Research, design, and build the core services behind Transit's RFQ orchestration engine: pricing, quoting, routing, inventory management, and settlement across chains and venues
• Research, design, and build the core services behind Transit's exchange orderbook: the matching engine, pricing rules, order APIs, and onchain settlement
• Own systems end to end, from design through deployment, monitoring, and the on-call reality of moving real money
• Build rate-aware pricing and inventory controls for assets whose price moves
• Integrate new chains, venues, solver networks, and liquidity sources, making each integration cheaper than the last
• Build the execution attribution and economics layer that makes integrator revenue share programmatic
• Work directly with the onchain surface: the contracts, mint and redeem facilities, and compliance enforcement Transit routes through
• Set technical direction on a small team where individual decisions carry significant weight, and raise the engineering bar through review and mentorship

What you bring

• 6+ years building and operating production backend systems, with true ownership of something that had to stay up
• A track record of building systems from 0 to 1 and then hardening them, rather than only maintaining mature ones
• Experience with systems where correctness is financial: exchange infrastructure, trading, settlement, or similar
• Understanding of traditional exchange market structure such as CLOBs, batch auctions, RFQs, or similar, across economic, incentive, and technical design

Nice to have

• Experience at a market maker, exchange, or trading firm
• Multi-chain infrastructure experience, especially inventory or treasury management across chains
• Prior work on tokenized assets, stablecoins, or RWAs
• Understanding of onchain market structure: AMMs, solver networks, DEX aggregators, bridges, and similar
• Ability to read Solidity and reason about contract interactions, even if you don't write smart contracts
• Judgment about latency, inventory risk, and execution quality, and the ability to explain a pricing decision to someone on the commercial side

About Paxos Labs

Paxos Labs builds enterprise infrastructure for trusted onchain financial products, working with major financial platforms and some of the largest financial enterprises in the world. The team is roughly 15 people, which means engineers own whole systems rather than slices of them and ship to production within weeks of joining. Competitive compensation with meaningful equity participation.