Senior Software Engineer, Payments
Description
Senior Software Engineer, Payments
Location: San Francisco (Rincon Hill)
Company Overview
Mission: Make high-quality early childhood education accessible to all by empowering childcare providers with tools and support while helping parents find quality learning environments.
What We're Building: A category-defining platform at the intersection of marketplace, SaaS, and public sector systems, increasingly powered by AI. Series B backed by a16z, Goldman Sachs, and First Round.
The Role
Own the engineering behind a payments platform that processes at least $3 billion through our platform, working alongside a small, dedicated team. We move money across banking, debit cards, Stripe, SAP, partner advances, and payroll, we run our own billing platform, and we lean on third-party partners for most of our fintech capabilities, so much of this is integration, orchestration, and tracking work. There is a lot to build here. You will consolidate and refactor a system built across many legacy integrations into something clean, reliable, and fast, and you will spend a lot of time directly with customers.
What You'll Do
- Build alongside a dedicated payments team: 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 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
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
Application
Apply with your resume and a short note on the most complex payments or integration system you have built.
This is a full-commitment, full-ownership role, based in our San Francisco office. You will work very closely with the CEO, in office five to six days a week.
As published by greenhouse · 27 questions · 3 written answers
Basics
First Name, Last Name, Email, Phone, Resume/CV, Cover Letter
Short answers (17)
- LinkedIn Profile optional
- Website optional
- How many employees did the smallest company you worked at have while you were there? optional
- Smallest-company headcount — anything else to add? optional
- What was that company's name? optional
- How long did you work there, in months? optional
- Tenure length — anything else to add? optional
- Where did you attend and graduate from your undergraduate studies? optional
- What was your undergraduate major? optional
- Did you attend graduate school? If so, where? optional
- What was your graduate major? optional
- Fields worked in — anything else to add? optional
- Short tenure — anything else to add? optional
- Software sales — anything else to add? optional
- Current location — anything else to add? optional
- SF office schedule — anything else to add? optional
- Work hours — anything else to add? optional
Pick from a list (7)
- What types of early childhood experience do you have?
- Which of these fields have you worked in?
- What was the main reason for a short tenure in a prior role?
- Has software you built or helped build generated more than $100 in sales?
- What is your current location?
- Can you work Monday–Friday in our San Francisco office, often on Saturdays, and be available Sundays when needed for child care customer events? This is a highly collaborative, in-person role.
- Can you generally work 9am–7pm, including occasional late customer meetings or deadlines and work lunches or dinners? Wonderschool covers travel home when you work late.
Written answers (3)
- In 1–2 sentences, what makes you a fit for this role?
- What did you build or try to build, and what happened? optional
- Describe a payments integration you built, your personal ownership, how you handled failures, retries, or reconciliation, and the outcome.