4h ago

Staff Frontend Software Engineer - Payments and Checkout

New York City
full-timesenior Hybridfintech

Tech Stack

Description

You will own and evolve our checkout and payment experience, working with cross-functional teams to build fast, seamless, high-converting payment flows. Your work on reducing friction and improving authorization rates will directly impact revenue and user experience.

Requirements

  • 7+ years frontend engineering experience, ideally in fast-paced or startup environments
  • Deep hands-on experience building and optimizing checkout or payment flows
  • Strong proficiency in modern frontend frameworks (React, Next.js, etc.)
  • Experience improving conversion rates through experimentation, analytics, and UX iteration
  • Familiarity with payments infrastructure (Stripe, Adyen, Braintree, tokenization, 3DS, etc.)

Responsibilities

  • Own end-to-end frontend architecture for checkout and payment flows across web platforms
  • Improve checkout conversion rates through UX improvements, performance tuning, and data-driven experimentation
  • Partner with product and growth to run A/B tests, analyze funnel performance, and ship iterative improvements
  • Build seamless flows for complex payment states including retries, failures, and authentication (3DS, etc.)
  • Optimize frontend performance (Core Web Vitals, latency, rendering) for fast and reliable checkout experiences
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