Stripe Internship Tracking-Invoices OA

Role: Software Engineering Intern
Result: Not disclosed
Timing: November 4, 2019

The OA processed action strings for invoice state changes:

• CREATE added an invoice.
• FINALIZE made it payable.
• PAY removed the debt after finalization.

Created and finalized invoices counted toward the unpaid total using their current integer-cent amount. Only USD invoices counted. Actions were applied in input order, and state changes were permanent.

The examples returned 800, 600, and 0.

The source did not fully define invalid transitions, duplicate IDs, or input bounds. A second document asked for written code-improvement thoughts.

Practice: Track Invoice Lifecycle and Outstanding USD Balance.