Senior C/C++ Engineer

About the Company

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.

Responsibilities

• Build the exchange core: Design and implement low-latency, high-throughput components of Polymarket’s trading and matching infrastructure using C/C++.
• Optimize for speed & scale: Profile, tune, and debug performance-critical systems, with a relentless focus on latency, throughput, and determinism.
• Design robust systems: Develop efficient algorithms and data structures, and build scalable messaging and event-driven systems.
• Own reliability & correctness: Reinforce the security, availability, performance, and scalability of core exchange systems.
• Collaborate deeply: Work closely with engineers across product, infra, and data to ensure tight integration.
• Contribute to engineering excellence: Participate in design reviews, code reviews, and architectural discussions.

Requirements

• 5+ years of professional C/C++ experience
• Deep knowledge of algorithms, data structures, and low-level performance optimization
• Proven experience building or operating low-latency, high-throughput, scalable systems in production environments
• Strong problem-solving skills and an entrepreneurial mindset

Preferred Qualifications

• Background in finance, trading systems, networking, or exchange infrastructure
• Experience with multithreading, lock-free programming, and advanced optimization techniques
• Familiarity with distributed messaging systems like Kafka

Benefits

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