Senior Backend Engineer, Services

About the Role

The exchange is the core of what Polymarket does. Every trade, every order, every market resolution runs through the systems this team owns. As a Senior Backend Engineer on the Services team, you'll be working directly on that infrastructure, building and scaling the backend that processes real money, in real time, at meaningful volume. The work is technical, high-stakes, and unambiguous in its consequences.

This is an individual contributor role with high autonomy and high ownership. You'll work alongside a small group of senior engineers who care deeply about correctness and performance. There's no heavy process here, no committees, no long approval chains. You'll be expected to identify problems, propose solutions, and ship them. The mandate is simple: keep the exchange fast, correct, and available as Polymarket continues to scale.

If you've spent your career building systems where performance actually matters, where a bug in production has real consequences, this is the kind of problem you've been waiting to work on.

What You'll Do

• Design and implement low-latency backend services that power Polymarket's core exchange, primarily in Go, with Python or Java where appropriate.

• Profile and tune systems across the full stack, identifying bottlenecks in latency, throughput, and memory usage before they become production problems.