Staff Fullstack Engineer

Polymarket is building a dedicated growth engineering function, and this Staff Fullstack Engineer role is central to it. The mandate is user growth: owning the new-user experience from first visit through first trade, reducing friction in the acquisition funnel, and building the surfaces that convert visitors into active traders. The role spans the full stack rather than being siloed to frontend or backend, covering onboarding flows, KYC experience, and ad-driven funnels that route users from external campaigns into live prediction markets. The team operates with high autonomy — engineers are expected to drive priorities themselves rather than wait on fully specced tickets.

• Own and iterate on the new-user onboarding flow from account creation through KYC completion
• Build ad-driven funnel surfaces that route campaign traffic into relevant market pages
• Ship fullstack features end-to-end, including frontend UI, backend services, and integrations
• Identify friction points in the acquisition funnel using product analytics and experimentation
• Make architectural decisions within the growth domain without waiting on senior sign-off
• Raise the technical bar on the growth team through code review and mentorship

• 7+ years of fullstack engineering experience with real depth on both frontend and backend
• Track record shipping onboarding flows, KYC integrations, or acquisition funnel features
• Experience working across teams in a larger engineering org without top-down coordination
• Strong product instincts to identify and fix broken funnels without a full spec
• Comfortable making technical tradeoffs across frontend, backend, and external services
• Experience with Web3 onboarding or crypto-native KYC/compliance tooling is a plus

This listing was aggregated by an automated job-scraping process from the company's official careers page and has not been independently rewritten or verified beyond the source posting.