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Backend Engineer, Payments

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Backend Engineer, Payments in USA new

  • San Francisco, CA

Responsibilities

  • Own the reliability of subscription payments from purchase and renewal through cancellation, refunds, and entitlements.
  • Build and maintain payment integrations with Paddle, RevenueCat, and Stripe in Node.js, and lead the rollout of new payment providers.
  • Design idempotent webhook handling, provider reconciliation, safe retries, and reliable payment migrations.
  • Implement monitoring, alerting, and runbooks, lead payment incident response and postmortems, and address root causes.
  • Set standards for payment code changes, review billing-related changes, and define the payments architecture, roadmap, and operating practices.
  • Partner with growth, product, finance, and support on pricing, paywall experiments, and revenue reporting.
  • Mentor engineers and improve reliability practices across the backend.

Requirements

  • 10+ years of software engineering experience, including staff-level ownership of production systems.
  • Deep experience building and operating recurring subscription billing for a consumer product.
  • Hands-on experience with App Store or Google Play billing, directly or through RevenueCat, Stripe Billing, or Paddle.
  • Strong backend fundamentals in Node.js and TypeScript or a comparable language, plus solid relational database skills.
  • Track record of improving payment reliability through incident reduction, reconciliation improvements, and safer migrations.
  • Ability to define an independent roadmap for a new area and communicate clearly with engineering, product, and finance partners.
  • Willingness to contribute to an AI-native development workflow involving design review, verification loops, and AI-assisted tooling.
  • Nice to have experience migrating or consolidating payment providers, handling international payments and taxes across APAC markets, supporting 1M+ users, or building shared mobile and web entitlement systems.

Benefits

  • Work in person in San Francisco at least 3 days per week.
  • Join a rapidly growing company at an important stage with significant individual impact.
  • Work with a collaborative, thoughtful team focused on craft and professional growth.
  • Work in a global environment across offices in San Francisco, Ljubljana, Seoul, Tokyo, and Taipei, with opportunities to engage with users internationally and travel.
  • Help improve language learning outcomes for millions of users.

Salary: $220k - $280k/yr

Speak

Speak builds an AI-powered language learning app that offers conversation practice, instant feedback, and structured lessons for consumers via a subscription. Headquartered in San Francisco, it first launched in South Korea in 2019 and now supports learners across many markets and 15+ languages. ...

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