Senior Backend/Product Engineer: Real-Time APIs & Platform

Polymarket; New York (NY); On-site; USD 140,000 - 210,000; Full time

Benefits offered by this job

Salary & equity

Unlimited PTO

Health, Vision, Dental

401k match

MacBook Pro setup

Job summary

Polymarket is seeking a backend/product engineer to own core domain APIs and data models powering our consumer-facing product. You’ll work at the intersection of backend infrastructure and product, shipping primitives that frontend, mobile, and product teams rely on.

You’ll design APIs, build real-time gRPC/Connect services and streaming, and collaborate across engineering, infra, and data to unify fragmented systems and enable fast feature delivery.

Qualifications

• Backend/product engineering experience designing and evolving domain APIs for a consumer-facing product at scale.
• Hands-on experience with gRPC/Connect and real-time streaming and event/notification infrastructure.
• Proven track record partnering with frontend, mobile, and product teams to ship end-user features.
• Experience unifying fragmented services and APIs into reusable primitives.
• Pragmatic balance of technical debt cleanup with shipping new product surface area under tight deadlines.
• Experience at a high-growth consumer product company or marketplace is a plus.

Responsibilities

• Design core domain APIs and data models powering Polymarket’s consumer product.
• Build real-time infrastructure with gRPC/Connect and streaming systems.
• Ship end-user features in collaboration with frontend, mobile, and product teams.
• Unify fragmented services into reusable primitives to speed future development.
• Balance technical debt cleanup with delivering new product surfaces under deadlines.
• Collaborate with engineers across product, infra, and data for tight platform integration.

Skills

Domain APIs

Data models

gRPC/Connect

Real-time streaming

End-user features

Cross-functional collaboration

Tools

AWS

GCP

Containers

Job description

Polymarket is seeking a backend/product engineer to own core domain APIs and data models powering our consumer-facing product. You’ll work at the intersection of backend infrastructure and product, shipping primitives that frontend, mobile, and product teams rely on.

You’ll design APIs, build real-time gRPC/Connect services and streaming, and collaborate across engineering, infra, and data to unify fragmented systems and enable fast feature delivery.