Stripe Software Engineer Interview Experience
Stripe · Mid level
Interview process
Can choose between HackerRank and a local IDE for execution. The question is given in several parts; each part's completion is a must to proceed to the next part. There were three parts in total, to be solved within 45 minutes.
Interview rounds · 1
- 1
Phone screen
CodingQ1. Invoice Reconciliation
How they answeredStripe’s Invoicing product allows businesses to create and send invoices to their customers. While many invoices can be paid directly, there are cases where standalone payments need to be reconciled with open invoices for a customer.
Your task is to write a program that matches incoming payments to their corresponding invoices based on the payment’s memo line.
You are given:
• A payment string
• A list of invoice strings
The payment string is a comma-separated string containing:
The payment ID (e.g., “payment123”)
The payment amount in USD minor units (e.g., $1.00 = 100)
The memo line, which always follows the format “Paying off: {INVOICE_ID}”
Each invoice string is also comma-separated and contains:
The invoice ID
The due date of the invoice (e.g., “2024-01-01”)
The amount due in USD minor units
You need to:
• Parse the payment and invoices.
• Find the invoice mentioned in the memo line.
• Output a formatted string describing the reconciliation.
Input Example:
payment = "payment5,1000,Paying off: invoiceC"
invoices = [
"invoiceA,2024-01-01,100",
"invoiceB,2024-02-01,200",
"invoiceC,2023-01-30,1000"
]
Expected Output:
payment5 pays off 1000 for invoiceC due on 2023-01-30