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Paxos Labs

Senior Backend Engineer

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Description

You will design, build, and operate the core backend services powering Transit’s RFQ orchestration engine and exchange orderbook. You will own systems from design through deployment, monitoring, and on-call operations involving real-money movement. You will develop pricing, routing, inventory, settlement, and execution-attribution capabilities; integrate chains, venues, solver networks, and liquidity sources; work with onchain contracts and compliance flows; and provide technical direction, code review, and mentorship.

Responsibilities

  • Research, design, and build core services for RFQ pricing, quoting, routing, inventory management, and settlement across chains and venues
  • Research, design, and build exchange orderbook services including the matching engine, pricing rules, order APIs, and onchain settlement
  • Own systems end to end from design through deployment, monitoring, and on-call operations
  • Build rate-aware pricing and inventory controls
  • Integrate new chains, venues, solver networks, and liquidity sources
  • Build execution attribution and economics capabilities for programmatic integrator revenue sharing
  • Work with onchain contracts, mint and redeem facilities, and compliance enforcement
  • Set technical direction and raise engineering standards through review and mentorship

Requirements

  • 6+ years building and operating production backend systems
  • Experience building systems from initial development through hardening
  • Experience with financially critical systems such as exchange infrastructure, trading, or settlement
  • Understanding of traditional exchange market structure, including CLOBs, batch auctions, or RFQs

Benefits

  • Meaningful equity participation
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