Skip to content
WonderschoolWonderschoolSan Francisco, CA

Senior Software Engineer, Payments

Senior Software Engineer owning a high-volume payments platform processing $3B+, consolidating legacy integrations with banking, Stripe, SAP and partners. Requires strong payments/fintech experience, attention to detail, customer collaboration, and regulatory knowledge. In-office role in SF working closely with CEO.

Salary not listed
On-site5+ YOEFullstack Engineering

About the role

What You'll Do

  • Consolidate and refactor a payments system assembled from many legacy system integrations
  • 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 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

Who You Are

  • Senior engineer with a strong payments background and real experience building payment systems and integrations (fintech a plus)
  • 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

Skills

PaymentsFintechStripeSAPBanking IntegrationsDebit CardsPayrollBilling PlatformsOrchestrationReconciliationRegulatory Compliance
Tabs

Senior Software Engineer, Payments

TabsNew York, NY

Senior Software Engineer building custom payments workflows and integrations with multiple payment service providers (PSPs) at an AI-native revenue platform. Requires 5+ years experience specializing in payments systems, complex system design, and strong AI interest.

175k – 240k
On-site5+ YOEFullstack Engineering
Tabs

Senior Software Engineer, Merchant Onboarding

TabsNew York, NY

Senior Software Engineer building the full merchant onboarding journey at Tabs, an AI-native revenue platform. Own core backend services, product surfaces, internal tooling, and data flows end-to-end for finance teams. 5-8 years experience; fullstack TypeScript/React skills preferred.

175k – 240k
On-site5+ YOEFullstack Engineering
Aurelian

Senior Product Engineer

AurelianSeattle, WA

Senior Product Engineer who owns outcomes end-to-end: talks to 911 dispatch customers, identifies problems, defines roadmap/prioritization, then builds and ships features across the AI call-handling and dispatcher-assistant platform. Requires product thinking, high ownership, customer empathy, and comfort across the full stack.

160k – 220k
On-site4+ YOEFullstack Engineering
SimplePractice

Senior Engineer I

SimplePracticeSanta Monica, CA +1

Senior full-stack engineer (heavy backend focus) building the next-generation practice management platform at SimplePractice. Develop features end-to-end with Ruby on Rails, Ember.js, AI/ML, and LLMs; requires 8+ years experience and compliance knowledge (PCI/HIPAA).

217k – 217k
Hybrid8+ YOEFullstack Engineering
Carbon

Senior Software Engineer

CarbonSunnyvale, CA

Senior Software Engineer building and scaling customer-facing web applications and modern APIs that integrate with backend services and control Carbon's global 3D printer network. Requires 5+ years experience with deep React expertise, API design, cloud platforms, and comfort working across the full web-to-backend stack.

158k – 238k
On-site5+ YOEFullstack Engineering