# Hire a Stripe developer for subscriptions, webhooks and checkout > Hire a Stripe developer for subscriptions, webhooks and checkout: Stripe billing set up or fixed in your codebase at a fixed price, tested in Stripe test mode. Canonical: https://app369.com/service/hire-stripe-developer/ App369 is one Stripe developer, Simon Dziak, who sets up or fixes Stripe billing in your own codebase. Stripe Billing Fix and Setup is $950, delivered 5 business days after repo access arrives and tested in Stripe test mode. One Stripe bug you can name is an App Fix Ticket: a $450 diagnosis, credited toward the $1,200 fix. Fixed prices [**All fixed-price offers**](https://app369.com/fixed-price/) - [$950**Stripe Billing Fix and Setup**Subscriptions, webhooks, customer portal and failed payments set up or fixed, tested in Stripe test mode.**See scope and start**](https://app369.com/fixed-price/stripe-billing-setup/) - [from $450**App Fix Ticket**One reproducible bug in an existing mobile or web app, diagnosed and fixed.**See scope and start**](https://app369.com/fixed-price/flutter-firebase-bug-fix/) Something else? [**Describe your project**](https://app369.com/contact/) Check it yourself ## **How do you check a Stripe integration before hiring anyone?** Stripe’s own docs warn that without signature verification an attacker could send fake webhook events to your endpoint, and that the same event can arrive more than once. These 3 checks need only your code. | **Check** | **Run this** | **A pass looks like** | | --- | --- | --- | | **Does the webhook check Stripe’s signature?** | `grep -rnE "constructEvent\|construct_event\|parseEventNotification\|parse_event_notification\|Stripe-Signature" . --exclude-dir=node_modules --exclude-dir=.git` | A match inside your own webhook route, called on the raw request body with the whsec_ signing secret. No match in your code means the route may accept fake events: look for another verification call before you rely on it. | | **Does it skip events it has already handled?** | `grep -rnE "(evt\|event\|stripeEvent)(\.id\|\[.id.\])\|event_id" . --exclude-dir=node_modules --exclude-dir=.git` | A match only starts the check: the handler should store each event ID it processes and return early on a repeat, so a retried event can’t grant access or send an email twice. Stripe adds that two separate events can describe the same change, so key on the object ID and event type as well. | | **Is a secret or restricted key anywhere it shouldn’t be?** | `grep -rnE "[sr]k_(live\|test)_[A-Za-z0-9]+" . --exclude-dir=node_modules --exclude-dir=.git --exclude-dir=dist` | No matches in committed code. A hit in a local .env file is fine if that file is never committed. Only the publishable pk_ key is safe in front-end code. | What gets built ## **What does a Stripe developer set up?** - 01 ### **Plans and prices** Products and prices for up to 3 plans, monthly or yearly, created in your Stripe account and referenced from your code. - 02 ### **Checkout or the Payment Element** Sign-up through Stripe Checkout or the Payment Element, so card details go to Stripe and never touch your server. [**Apple Pay or Google Pay not showing**](https://app369.com/fix/stripe-apple-pay-google-pay-not-showing/) - 03 ### **A webhook handler that can be trusted** One handler for the subscription lifecycle (created, updated, payment failed, cancelled) that checks Stripe’s signature and processes each event once. [**Webhook signature verification failed**](https://app369.com/fix/stripe-webhook-signature-verification-failed/) [**Webhook returns 200, database not updated**](https://app369.com/fix/stripe-webhook-200-but-database-not-updated/) [**Paid but account not upgraded**](https://app369.com/fix/stripe-paid-but-account-not-upgraded/) - 04 ### **The customer portal** Stripe’s hosted portal for plan changes, card updates and cancellations, so customers manage billing without emailing you. [**Customer portal not working**](https://app369.com/fix/stripe-customer-portal-not-working/) - 05 ### **Failed payments and access** Retries and emails switched on in Stripe, and clear rules in the app for what a past-due or cancelled account can still open. [**Cancelled subscription keeps access**](https://app369.com/fix/stripe-subscription-canceled-access-wrong/) [**Subscription incomplete, requires action**](https://app369.com/fix/stripe-subscription-incomplete-requires-action/) - 06 ### **Tested before you go live** Every flow run in test mode with test clocks, which advance simulated time to show renewals, trials and failed payments without waiting a month. [**Works in test mode, not live**](https://app369.com/fix/stripe-works-in-test-mode-not-live/) Market rates ## **What does it cost to hire a Stripe developer?** Hire marketplaces fill page 1 for this search, and most quote by the hour. These figures come from their own pages, read November 8, 2026. - **✓**### **Lemon.io: $60 to $200 an hour in its hiring guide** The hiring guide table on Lemon.io’s Stripe page lists mid-level developers at $60 to $90 an hour for basic checkout, senior ones at $100 to $140 for work such as subscription logic, and consultants at $150 to $200. The same page also shows lower figures in its budget calculator, from $41 to $60 an hour. - **✓**### **Toptal: no published rate** Toptal’s Stripe page publishes no hourly rate and offers a trial period of up to two weeks. - **✓**### **App369: $950 for a scoped setup or fix** One fixed price for the work listed above, paid before it starts, delivered as a pull request 5 business days after repo access and a test-mode key arrive. At Lemon.io’s senior guide rates, the level it lists for subscription logic, $950 buys about 7 to 10 hours. [**See the Stripe Billing offer**](https://app369.com/fixed-price/stripe-billing-setup/) - Stripe Billing - Stripe Checkout - Payment Element - Webhooks - Customer portal - Node.js - Firebase - Supabase Error fixes ## Stripe errors Simon fixes Each page covers one Stripe error, with Stripe’s docs as the source and what to check first. - [Stripe PaymentIntent already succeeded](https://app369.com/fix/stripe-paymentintent-already-succeeded/) - [Stripe Invalid API Key provided](https://app369.com/fix/stripe-invalid-api-key-provided/) - [Stripe Apple Pay or Google Pay not showing](https://app369.com/fix/stripe-apple-pay-google-pay-not-showing/) - [Stripe subscription stuck incomplete](https://app369.com/fix/stripe-subscription-incomplete-requires-action/) - [Stripe card declined](https://app369.com/fix/stripe-card-declined-generic-decline/) - [Stripe cancel at period end](https://app369.com/fix/stripe-subscription-canceled-access-wrong/) - [Stripe customer portal not working](https://app369.com/fix/stripe-customer-portal-not-working/) - [Stripe no default payment method](https://app369.com/fix/stripe-no-default-payment-method/) - [Stripe Connect onboarding incomplete](https://app369.com/fix/stripe-connect-account-onboarding-incomplete/) - [Stripe no such customer](https://app369.com/fix/stripe-no-such-customer-test-mode/) - [Stripe works in test mode, not live](https://app369.com/fix/stripe-works-in-test-mode-not-live/) - [Stripe webhook 200, database not updated](https://app369.com/fix/stripe-webhook-200-but-database-not-updated/) - [Stripe webhook signature error](https://app369.com/fix/stripe-webhook-signature-verification-failed/) - [Stripe paid, account not upgraded](https://app369.com/fix/stripe-paid-but-account-not-upgraded/) FAQ ## **Questions before you start**
**How much does it cost to hire a Stripe developer? ** App369 publishes fixed prices: Stripe Billing Fix and Setup is $950, delivered 5 business days after repo access and a test-mode key arrive, and one named Stripe bug is an App Fix Ticket, a $450 diagnosis credited toward the $1,200 fix. Lemon.io’s hiring guide lists $60 to $140 an hour for mid-level and senior Stripe developers.
**What do I need to hand over? ** Access to the repository and a test-mode restricted API key with only the permissions the work needs. Simon never needs your live keys or your Stripe login.
**Will you touch my live Stripe data? ** No. All work runs in test mode, and the fix comes as a pull request with notes. Switching your account to live mode is a step you take yourself.
**What isn’t included? ** Stripe Connect marketplaces (quoted separately), tax registration or accounting advice, moving existing subscribers to new prices, switching your account to live mode, and calls, except paid consultations ($100 per 15 minutes, paid upfront).
**Who does the work? ** Simon Dziak, who founded App369, does the work himself, in writing by email. He built and runs the Stripe subscriptions, webhooks and payment links behind Workspace369’s billing.
### **Sources** - [Stripe docs: Receive Stripe events in your webhook endpoint](https://docs.stripe.com/webhooks) - [Stripe docs: API keys](https://docs.stripe.com/keys) - [Stripe docs: Test your Billing integration](https://docs.stripe.com/billing/testing/test-clocks) - [Lemon.io: Hire Stripe API developers](https://lemon.io/hire/stripe-api-developers/) - [Toptal: Stripe developers](https://www.toptal.com/developers/stripe) Not a fixed-price job? ## **Describe it and get a written quote** Send what you need built or fixed. You get a written scope, a fixed price and a timeline; Simon replies by email, usually within one business day. [**Describe your project **→](https://app369.com/contact/) [**Instant quote**](https://app369.com/instant-quote/) Prefer a call? Consultations are $100 per 15 minutes, paid upfront.