Staff Fullstack Engineer

About the Role

We're building a dedicated growth engineering function at the org level, and this role sits at the center of it. Your mandate is user growth: owning the new user experience from first touch to first trade, reducing friction in the acquisition funnel, and building the surfaces that turn curious visitors into active traders. This is not a siloed frontend or backend job — you will work across the entire stack and cut into whatever territory needs cutting into.

The team operates with a mission-driven structure. You will collaborate closely with product, data, and other engineering teams, but you are expected to drive, not wait. Growth at Polymarket is not a marketing problem — it is an engineering problem. The onboarding flow, the KYC experience, the ad-driven funnels that bring people from a sports broadcast into a live prediction market: all of it gets built here.

What You'll Do

• Own and iterate on the new user onboarding flow, from account creation through KYC completion, with a focus on activation rates and drop-off reduction

• Build ad-driven funnel surfaces that route users from external campaigns directly into relevant market pages, coordinating with product on targeting logic and layout

• Ship fullstack features end to end — writing frontend UI, backend services, and third-party integrations — without needing work parceled out across teams