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Onsite or remote • New York City+1🌐 Remote💼 Full-time💰 $100,000–$100,000🗓 2026-06-25

Core

Building the blockchain and backend infrastructure for an execution engine that routes trades across sports prediction market venues.

Role type

Founding Blockchain Engineer (Backend/Infrastructure)

Builds

Institutional-grade execution engine, venue integrations, and cross-chain trade routing for betting syndicates.

Domain

Fintech / Sports Prediction Markets / Blockchain

Deliverable

production ML models | product features | infrastructure

Required skills

Systems/backend engineering, prediction markets, DEX aggregators, onchain execution, cross-chain execution, venue integrations

Preferred skills

Technical direction, architecture design, rapid learning, initiative

Technologies

Blockchain, backend infrastructure, cross-chain protocols

Responsibilities

Routing & Execution Engine, Venue Integrations, Chain & Wallet Abstraction, Technical Direction

Seniority

Founding, hands-on IC with strategic ownership

Rewrite
## About the Role ParlayX's mission is to become the premier execution and brokerage platform for sports prediction markets and the central hub connecting the ecosystem. We are hiring a founding engineer to help build the institutional grade product our syndicate clients rely on. This role focuses on the blockchain and backend infrastructure powering our execution engine, venue integrations, and cross chain trade routing. This hire will have real ownership over technical direction, not just implementation. Although backend focused, you will also work across the client application and ramp into new stacks as needed. We value engineers who learn quickly, take initiative, and push back. We do not assume the product vision or architecture is fully figured out and want someone who will speak up when they see a better path. ## What You'll Own - Routing & Execution Engine: filling large syndicate orders across venues at best price - Venue Integrations: Polymarket CLOB, SX Bet RFQ, and new venues - Chain & Wallet Abstraction: Cross-chain Execution - Technical Direction: shape architecture decisions and help drive the roadmap ## Who You Are - Strong systems/backend engineer with experience in prediction markets, DEX aggregators, or onchain execution. - High integrity, low ego, and eager to learn. - Take initiative and fail forward, you're not afraid to move fast and break things. - Wants real ownership, not a ticket queue ## Compensation & Logistics - Base Salary: 100-150k - Equity: Meaningful Equity - Location: In-Person NY/Remote ## About the Company ParlayX is an execution platform for sports prediction markets built for betting syndicates. We aggregate liquidity across venues and provide a single interface to execute trades.
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