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Fiverr Pro
English
$
USD
I will integrate stripe payments subscriptions and webhooks into your app
Florian Lepage
About this gig
A successful redirect is not enough: your app needs to know who paid and what they can access.
I'm Florian, founder of KYN Studio. I integrate Stripe into existing JavaScript/TypeScript, React and Next.js apps.
CHOOSE YOUR SCOPE
Checkout: one one-time payment flow, verified webhook and payment status in your existing database.
Subscriptions: up to 2 recurring prices, Checkout, Customer Portal and subscription status sync.
Lifecycle: up to 3 recurring prices, agreed plan changes/trials, access sync, tests and deployment.
Every package includes server-side secrets, webhook signature verification, duplicate-event handling, sandbox tests, source code and setup notes.
Real payment work: I designed and built Net For Hope's charity website and store with Stripe checkout. Other gallery examples demonstrate broader web/API engineering, not Stripe implementations.
Message me on Fiverr before ordering for a codebase review. A working app, authentication, database and usable Stripe account are required. Stripe/hosting fees are separate. Full SaaS builds, Connect, marketplace payouts, usage billing, migrations and tax/legal advice are excluded.
Get to know Florian Lepage
Florian Lepage
Full Stack Developer and KYN Studio Founder: Web Apps, APIs and AI
- FromFrance
- Member sinceMay 2020
- Last delivery1 year
Languages
English, French
I build web apps, internal tools and AI features, from the first idea through to production.
I run KYN Studio, where I work directly with founders and businesses to figure out what they need and build it. That covers the product, backend, infrastructure and keeping everything running after launch
I led engineering on an AI product at a London startup. Working across startups and a larger company has made me comfortable taking a loosely defined problem and owning the whole build.
I work mainly with TypeScript, React/Next.js, Node.js, Python and Go. I like being involved beyond the code
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FAQ
What do I need before ordering?
A working JavaScript/TypeScript app, existing authentication/database, a usable Stripe account and an agreed payment flow. Send the repository structure and brief on Fiverr first. These packages are integrations, not full website or SaaS builds.
What is a recurring price?
One Stripe Price configuration, such as a monthly or annual charge. Monthly and annual options count as two prices. Standard includes up to 2 recurring prices; Premium up to 3. We agree currency, trial, cancellation and plan-change rules before coding.
How are webhooks handled?
I verify Stripe webhook signatures server-side and handle duplicate events so payment/subscription state can be updated safely. We test the agreed success, failure and cancellation flows in Stripe test mode. Live activation is agreed with you separately.
Are Stripe fees and account approval included?
No. You own your Stripe account and pay Stripe, hosting and any related service fees. Stripe account verification, merchant approval and regional availability remain your responsibility. I cannot bypass verification or guarantee approval.
What is excluded from these fixed packages?
Stripe Connect, marketplace payouts, usage-based billing, major migrations, custom card-data storage, full SaaS builds and tax/legal advice are excluded. Premium covers only the agreed plan-change/trial and access-sync rules. Ask for a custom offer for anything beyond the brief.
How do access and handover work?
Use secure collaborator invitations or a secrets manager, not passwords/API keys in Fiverr messages or public repositories. I deliver source code and setup notes. Revisions stay within the agreed scope; ongoing maintenance and new features are separate.
