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Staff Fullstack Engineer

Staff fullstack engineer who will build and optimize Polymarket’s user acquisition and onboarding experiences, including KYC and growth funnels. Requires 7+ years of deep frontend and backend experience, strong product instincts, and cross-team execution skills.

About the job

Responsibilities

  • Own and iterate on the new-user onboarding flow from account creation through KYC completion, focusing on activation and drop-off reduction.
  • Build ad-driven funnel surfaces that route users from external campaigns to relevant market pages.
  • Ship end-to-end fullstack features, including frontend UI, backend services, and third-party integrations.
  • Use product analytics to identify acquisition-funnel friction and run experiments to measure impact.
  • Review code and make architectural decisions within the growth engineering domain.
  • Coordinate with engineering teams that own dependent services and align stakeholders to deliver changes.
  • Raise the technical bar through code reviews, feedback, and mentoring less senior engineers.

Requirements

  • 7+ years of fullstack engineering experience with substantial frontend and backend depth.
  • Experience shipping onboarding flows, KYC integrations, or acquisition-funnel features with measurable results.
  • Experience collaborating across teams in a larger engineering organization.
  • Strong product instincts and the ability to identify funnel problems and propose solutions.
  • Ability to make system-level technical tradeoffs across frontend, backend, and external services.
  • Clear communication skills for aligning engineers, product managers, and stakeholders.

Nice to Have

  • Experience with Web3 onboarding flows or crypto-native KYC and compliance tooling.
  • Familiarity with prediction markets, financial platforms, or other high-stakes transaction products.
  • Experience running growth experiments with A/B testing frameworks and interpreting results.

Compensation and Benefits

  • Competitive salary and equity.
  • Unlimited paid time off.
  • Full health, vision, and dental coverage.
  • 401(k) match.
  • Hardware setup including a new MacBook Pro, display, and accessories.

Skills

Fullstack Engineering, Frontend Development, Backend Development, Kyc Integrations, Product Analytics, A/B Testing, Web3, Crypto Compliance, Third-Party Integrations, System Architecture

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