Stripe setup · app integration · payment-state QA

Make the payment
path explain itself.

A short implementation slice for a subscription app: define the state model first, connect the provider with clear ownership boundaries, then test the moments customers actually experience.

01 / PAYMENT STATES

One source of truth,
clear transitions.

01

Choose

Plan, price, customer identity, and offer rules are explicit.

→
02

Pay

Checkout or portal returns a traceable, expected outcome.

→
03

Activate

Provider events update app access only after validated state.

→
04

Support

Upgrade, cancel, retry, and failed-payment paths stay readable.

02 / RELEASE CHECKS

Test the lifecycle,
not only checkout.

03

Implementation handoff

Data contract
What each system owns and when it changes.
Event map
Expected webhooks, idempotency, and exception paths.
Runbook
How to verify a payment issue without guessing.

FIRST PHASE

Inventory,
connect,
verify.

$50/hr proposed rate