Integration Engineer

Polymarket

Integration Engineer responsible for technical onboarding of market makers and institutional partners at Polymarket. Handling integration issues and maintaining documentation across trading platforms and APIs.

Posted 6/26/2026full-timeRemote • 🇺🇸 United StatesMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

PythonRustTypeScript

About the role

Key responsibilities & impact

Own technical onboarding for market makers and institutional partners end to end, from first API call to live trading, across our CLOB, WebSocket feeds, and RFQ gateway.
Serve as the primary technical contact post-onboarding, triaging issues, debugging integrations in production, and coordinating with engineering on fixes.
Write and maintain integration guides, code samples, and SDK documentation that reduce time-to-live for new partners.
Monitor the health of active partner integrations proactively and surface issues before partners report them.
Translate partner feedback, including bugs, missing features, and API pain points, into clear, actionable input for product and engineering.
Build and maintain code samples in Python and TypeScript that partners can actually use, not just reference.
Act as the technical bridge between trading firms and internal engineering, explaining complex system behavior clearly to both sides.

Requirements

What you’ll need

Hands-on experience integrating or debugging trading or exchange APIs (REST, WebSocket) in production. You've debugged real issues under pressure, not just in a sandbox.
Strong proficiency in Python. You can write working integration samples, debug partner code, and read Rust or TypeScript when needed.
Strong technical communicator. You can explain how an order book works to a quant at a trading firm and explain what that same firm needs to an internal engineer.
Track record of owning partner or client technical relationships end to end, from first contact through resolution, without dropping things or waiting to be told what to do next.
Solid understanding of electronic trading fundamentals: order types, market data feeds, execution mechanics, and how latency-sensitive systems behave under load.
(Plus) Experience at a crypto exchange, DeFi protocol, or on-chain trading venue.
(Plus) Background doing client integrations for market makers or HFT firms.
(Plus) Prior work as a solutions engineer or developer relations engineer at a fintech or trading technology company.
(Plus) Familiarity with perpetuals, derivatives, or prediction markets.

Benefits

Comp & perks

Competitive salary & equity
Unlimited PTO
Full Health, Vision, & Dental coverage
401k match
Hardware setup: new MacBook Pro, big display, & accessories

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

PythonTypeScriptREST APIsWebSocket APIsdebuggingintegrationSDK documentationcode sampleselectronic trading fundamentalslatency-sensitive systems

Soft Skills

technical communicationproblem-solvingrelationship managementproactive monitoringfeedback translationcollaborationtriaging issuesclear explanationownershipadaptability