Paxos Labs - Senior Backend Engineer
Requirements
• 3+ years building and operating production backend systems, with true ownership of something that had to stay up. • Track record of building systems 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. • 6+ years building and operating production backend systems. • 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. • Hands-on experience instrumenting applications with OpenTelemetry (SDKs and auto-instrumentation) to produce traces, metrics, and logs, and using observability tooling such as Grafana, Datadog, or New Relic for monitoring and alerting. • Knowledge • Understanding of traditional exchange market structure such as CLOBs, batch auctions, RFQs, or similar. Across economic, incentive, and technical design. • Understanding of onchain market structure: AMMs, solver networks, DEX aggregators, bridges, etc. • Reading Solidity and reasoning 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.
Responsibilities
• 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, 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, and make the next 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 a lot of weight, and raise the engineering bar through review and mentorship.
Benefits
• Paxos Labs is building the infrastructure layer that brings real financial products onchain, working with some of the largest financial enterprises in the world. Our products span stablecoin orchestration, tokenized commodities, and onchain credit, and they move real volume for real counterparties today. • We're a small team, which means engineers here own whole systems rather than slices of them and ship to production within weeks of joining. The problems are unusually hard for a company this size, because our customers are institutions and the correctness bar is the one finance holds, not the one crypto often settles for. • If you want to build financial infrastructure that institutions actually depend on, and have your judgment shape what gets built, this is the room to be in. Competitive compensation with meaningful equity participation.
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