Senior Backend Engineer

The role

You will build and own core services for Transit, a liquidity orchestration and distribution network. This includes developing the RFQ orchestration engine and the exchange orderbook.

What you will do

• Research, design, and build core services for the RFQ orchestration engine.
• Research, design, and build core services for the exchange orderbook.
• Own systems end to end from design through deployment and monitoring.
• Build rate-aware pricing and inventory controls.
• Integrate new chains, venues, solver networks, and liquidity sources.
• Build the execution attribution and economics layer.
• Work directly with the onchain surface including contracts and compliance enforcement.
• Set technical direction and raise the engineering bar through review and mentorship.

Required qualifications

• 3+ years building and operating production backend systems with true ownership.
• Track record of building systems 0 to 1 and hardening them.
• Experience with systems where correctness is financial, such as exchange infrastructure, trading, or settlement.
• Understanding of traditional exchange market structure such as CLOBs, batch auctions, or RFQs.

Nice to have

• 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 and using observability tooling like Grafana, Datadog, or New Relic.
• Understanding of onchain market structure: AMMs, solver networks, DEX aggregators, bridges, etc.
• Reading Solidity and reasoning about contract interactions.
• Judgment about latency, inventory risk, and execution quality.

Benefits

• Competitive compensation
• Meaningful equity participation

About the company

Paxos Labs builds enterprise infrastructure for trusted onchain financial products. They work with major financial platforms to build transparent and verifiable onchain infrastructure.