Senior Backend Engineer, Markets Engineering

About Polymarket

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.

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.

About

The Role

Polymarket is looking for a backend engineer to build the systems that power how markets are created, managed, and resolved s role is focused on automation pipelines, data integrations, and the market lifecycle infrastructure that keeps thousands of markets accurate and up-to-date in real time.

You'll be a core individual contributor working with other senior engineers to design, implement, and operate the systems that define Polymarket's markets layer. This is a high-ownership role with minimal bureaucracy and a strong bias toward execution.

What You'll Do

We're looking for an experienced backend engineer who enjoys building reliable automation systems and tackling complex data integration problems at scale.

* Build markets automation systems:
Design and implement pipelines that automate market creation, parameter configuration, and lifecycle management across thousands of concurrent markets.

* Engineer resolution infrastructure:
Build reliable, data-driven resolution systems that integrate with external oracles, news feeds, sports APIs, and real-world data sources to settle markets accurately and on time.

* Design event-driven automation:
Build robust event processing systems that detect and respond to real-world triggers across politics, sports, finance, and current events using messaging and streaming platforms (Kafka, Pulsar, Rabbit

MQ).

* Own reliability & operations:
Reinforce correctness, availability, and scalability across markets systems, and participate in diagnosing and resolving production issues.

* Collaborate cross-functionally:
Work closely with engineers across product, infra, data, and markets operations to ensure tight integration between the markets layer and the broader platform.

* Contribute to code quality:
Participate in code reviews, design discussions, and architectural decisions to maintain a high bar for engineering excellence.

What We're Looking For

* 4-7+ years of professional backend development experience, with strong proficiency in Python or Go (preferred), or another language such as Rust or Java.

* Solid understanding of distributed systems, data pipelines, and event-driven architecture; comfortable owning systems end-to-end in production.

* Experience building automation systems, workflow orchestration, or integrations with third-party data sources and APIs.

* Comfortable debugging complex systems on Linux and taking ownership of correctness and reliability.

* (Plus)

Experience with prediction markets, financial data, or real-world event detection systems.

* (Plus) Familiarity with external data integrations - news feeds, sports APIs, oracles, or similar real-world data sources.

* (Plus) Production experience with Kafka, Pulsar, or similar streaming platforms at scale.

* (Plus) Experience deploying systems in cloud environments (AWS/GCP) and using containers.

Benefits

* Competitive salary & equity

* Unlimited PTO

* Full Health, Vision, & Dental coverage

* 401k match

* Hardware setup - new Mac Book Pro, big display, & accessories