Senior Backend Engineer, Perpetuals

🏢 Polymarket · 📍 New York · 💼 onsite · ⏰ FullTime

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Position Summary & Responsibilities

About Polymarket

Polymarket is the world's largest prediction market platform. We enable individuals to express views on real-world events by trading on outcomes across politics, economics, sports, culture, and current affairs. Built as a peer-to-peer marketplace with no centralized "house," Polymarket aggregates diverse opinions into transparent, market-based probabilities that reflect collective expectations about the future.

We're growing fast, both in terms of volume ($21B traded in 2025) and adoption as an alternative news source. Our ambition is to become a ubiquitous beacon of truth in global media and we need your help adding fuel to the fire.

About the Role

Polymarket is launching perpetual futures and we're looking for Senior Backend Engineers to own the core systems that make it run. This is backend exchange engineering in the truest sense: low-latency order matching, high-throughput order state management, and the infrastructure that keeps an exchange operating correctly under load.

Ownership here is real and broad. We're looking for engineers who have built and operated order-book-based exchange systems before and can step in with deep context, take meaningful ownership of critical backend components, and raise the reliability and performance of the platform as we scale. If you've worked on the backend of a serious exchange and want to do it again somewhere with momentum, this is the role.

What You'll Do

Own core exchange backend systems. Take deep ownership of the systems that power order matching, position management, and order state across perpetual futures.
Build and optimize the matching engine. Profile hot paths, reduce lock contention, and drive improvements to latency and throughput backed by benchmarks and production-grade evidence.
Design for correctness at scale. Build queueing and backpressure mechanisms that keep the orderbook consistent and reliable under high load, without crossing books, creating ghost fills, or introducing stale order state.
Build for observability. Instrumen

🎯 Candidate Preparation Guide For Polymarket Applicants

Key Role Competencies & Evaluation Highlights

Key Role Focus:

Measures extreme first-principles thinking, crypto-native velocity, and comfort with high-uncertainty prediction markets.

📋 Preparation Priorities (Key Areas to Clarify):

1. Expressing moral or political bias regarding the types of prediction markets hosted
2. Needing heavy administrative oversight or formal corporate processes to start working
3. Treating the platform as a traditional fintech app rather than a high-frequency speculative crypto protocol

✨ Recommended Role Alignment Hook:

I thrive in hyper-fast, high-stakes environments where predictive truth and raw market liquidity dictate success.

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