Sr. Staff Engineer (Go/TypeScript)

Location: Remote

Company

Polymarket is a peer-to-peer prediction market platform covering politics, economics, sports, culture, and current affairs.

What you will do

• Build and maintain Go-based data pipelines for growth analytics, from event ingestion through reliable reporting.
• Audit martech integrations and replace or retire underperforming or redundant tooling.
• Architect and ship experimentation infrastructure for accurate A/B testing and measurement.
• Develop full-stack growth features in Go and TypeScript, owning backend services and frontend implementation end to end.
• Build production ML systems for personalization, predictive modeling, and experiment analysis.
• Review experiment designs and code while setting technical direction for the growth engineering team.

Requirements

• 10+ years of experience across full-stack development, data and analytics infrastructure, and martech systems.
• Production-level expertise in Golang and TypeScript, with regular hands-on use of both.
• Experience designing and operating reliable analytics and data pipelines in production.
• Hands-on experience shipping ML systems beyond experimentation and into production.
• Strong systems thinking and judgment when making architectural refactor-versus-rewrite decisions.
• Daily experience with AI-assisted development and setting technical direction under ambiguity and limited oversight.

Nice to have

• Experience with a marketplace, fintech, or large-scale consumer product.
• Familiarity with prediction markets, financial products, or real-time data systems.
• People management experience.

Culture & Benefits

• Competitive salary and equity.
• Unlimited PTO.
• Full health, vision, and dental coverage.
• 401k match.
• New MacBook Pro, large display, and accessories.