Sr. Staff Engineer

About the Role

The Growth Engineering team owns the systems that determine how people find Polymarket, what they do when they get here, and whether they come back. That means analytics infrastructure, martech integrations, experimentation frameworks, and the full-stack features that move conversion and activation numbers. It's a small, high-output team where the work is technical and the stakes are real.

We're hiring a Sr. Staff Engineer to be the technical foundation of that team. You'll own architecture decisions that affect how the entire team measures and ships work. You'll build and maintain the data pipelines that growth depends on, set the standard for how experiments are designed and evaluated, and ship full-stack features end-to-end without waiting on anyone else. This is not a coordination role. You will be writing code daily.

This hire matters because growth at Polymarket is accelerating and the infrastructure underneath it needs to scale with it. The person in this role will have direct influence on what gets built, how it gets built, and what gets retired. You'll do that as a senior IC with the trust and autonomy to make high-stakes calls, not someone who needs sign-off at every step.

What You'll Do

• Build and maintain Go-based data pipelines that power growth analytics, from event ingestion to reliable reporting that the team actually trusts.

• Audit existing martech integrations, identify what's underperforming or redundant, and replace or retire tooling with clear-eyed judgment.