Senior C/C++ Engineer, US Exchange

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 (e.g. Kafka or similar).
• Own reliability & correctness: Reinforce the security, availability, performance, and scalability of core exchange systems through careful design, testing, and operational rigor.
• Collaborate deeply: Work closely with engineers across product, infra, and data to ensure tight integration between the exchange and the rest of the platform.
• Contribute to engineering excellence: Participate in design reviews, code reviews, and architectural discussions to maintain a high bar for quality across the codebase.

Requirements

• 5+ years of professional C/C++ experience with 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, comfort working on complex systems end-to-end, and an entrepreneurial mindset.

Nice-to-haves

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

Benefits

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