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onsite senior full-time San Francisco

First indexed 13 Jul 2026

Description

We are looking for a Senior Software Engineer, Payments to own the engineering behind a payments platform that processes at least $3 billion. You will work alongside a small, dedicated team to consolidate and refactor a system built across many legacy integrations into something clean, reliable, and fast.

Responsibilities:

  • Build and maintain integrations across banking, debit cards, Stripe, SAP, partner advances, payroll, and our billing platform
  • Own the orchestration and tracking/reconciliation layer across our third-party fintech partners
  • Design for correctness first, because money movement demands it
  • Work directly with customers to understand real-world failure modes and edge cases
  • Partner daily with product to build, ship, measure, and iterate
  • Build within the laws and regulations governing payments and financial services

Requirements:

  • Senior engineer with a strong payments background and real experience building payment systems and integrations
  • Exceptionally high attention to detail; strong finance background is a plus
  • Excited to be close to the build and close to customers
  • Likes working on a small team and moving fast; bias toward action
  • Comfortable with the regulatory landscape around payments, banking, and cards
  • Uses AI tools and figures things out independently

Compensation & Benefits:

  • Base salary: Competitive market rate
  • Equity: Significant, meaningful ownership
  • Full health coverage
  • Wellness stipend (gym and office)
  • Travel stipend for certain circumstances
This listing is enriched and indexed by YubHub. To apply, use the employer's original posting: https://job-boards.greenhouse.io/wonderschool/jobs/7802186003