Senior C/C++ Engineer, US Exchange at Polymarket

<h2><strong>About Polymarket </strong></h2><p style="min-height:1.5em">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.</p><p style="min-height:1.5em">We’re growing fast: both in volume ($21B traded in 2025) and in adoption as an alternative news source. Our ambition is to become a ubiquitous beacon of truth in global media, powered by fast, reliable, and deeply technical market infrastructure.</p><p style="min-height:1.5em"></p><h2><strong>About the role</strong></h2><p style="min-height:1.5em">Polymarket is looking for a core C/C++ engineer to help build and scale our exchange infrastructure. This is a low-latency, high-throughput systems role focused on the heart of Polymarket’s trading engine. You’ll work on performance-critical components that directly impact market quality, reliability, and speed.</p><p style="min-height:1.5em">You’ll operate with high ownership and minimal bureaucracy, collaborating closely with other senior engineers to design, implement, and optimize systems that must be correct, fast, and resilient under real-world load.</p><p style="min-height:1.5em"></p><h2><strong>What you’ll do</strong></h2><p style="min-height:1.5em">We’re looking for an experienced individual contributor who enjoys solving hard systems problems and pushing performance limits.</p><ul style="min-height:1.5em"><li><p style="min-height:1.5em"><strong>Build the exchange core:</strong> Design and implement low-latency, high-throughput components of Polymarket’s trading and matching infrastructure using C/C++.</p></li><li><p style="min-height:1.5em"><strong>Optimize for speed &amp; scale:</strong> Profile, tune, and debug performance-critical systems, with a relentless focus on latency, throughput, and determinism.</p></li><li><p style="min-height:1.5em"><strong>Design robust systems:</strong> Develop efficient algorithms and data structures, and build scalable messaging and event-driven systems (e.g. Kafka or similar).</p></li><li><p style="min-height:1.5em"><strong>Own reliability &amp; correctness:</strong> Reinforce the security, availability, performance, and scalability of core exchange systems through careful design, testing, and operational rigor.</p></li><li><p style="min-height:1.5em"><strong>Collaborate deeply:</strong> Work closely with engineers across product, infra, and data to ensure tight integration between the exchange and the rest of the platform.</p></li><li><p style="min-height:1.5em"><strong>Contribute to engineering excellence:</strong> Participate in design reviews, code reviews, and architectural discussions to maintain a high bar for quality across the codebase.</p></l