Sr. Staff Engineer

Stack

Responsibilities

• ▹Build and maintain Go-based data pipelines that power growth analytics, from event ingestion to reliable reporting
• ▹Audit existing martech integrations, identify what's underperforming or redundant, and replace or retire tooling with clear-eyed judgment
• ▹Architect and ship experimentation infrastructure that lets the team run clean A/B tests and measure results accurately
• ▹Ship full-stack growth features in Go and TypeScript, owning the work from backend service to frontend implementation
• ▹Bring ML where it adds real value, including personalization, predictive modeling, and experiment analysis, and build those systems into production
• ▹Review experiment designs and code from other growth engineers, raising the quality of what ships
• ▹Use AI tools daily to accelerate output and set a higher bar for how the team works

Requirements

• ▹10+ years of experience spanning full-stack development, data and analytics infrastructure, and martech systems
• ▹Production-level expertise in Golang and TypeScript
• ▹A track record of designing analytics and data pipelines that teams rely on in production, not side projects or internal dashboards nobody checks
• ▹Hands-on experience building and shipping ML systems, having taken models past experimentation and into production

Soft skills

About the company

Polymarket is the world's largest prediction market platform, a peer-to-peer marketplace with no centralized house, where people trade on the outcomes of real-world events across politics, economics, sports, culture, and current affairs, aggregating opinions into transparent, market-based probabilities.