You're building a marketplace
Buyers, sellers, split payments, platform fees. You need Stripe Connect done right the first time — onboarding, payouts, refunds across connected accounts.
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Marketplace & payments engineering.
Stripe Connect, multi-seller payouts, checkout, refunds, disputes — built or rescued by an engineer who runs marketplace payments in production every day.
Who this is for
Payments are where mistakes become money.
A double-fired refund, a webhook that silently drops, a payout that rounds the wrong way — payment bugs don't just break features, they cost real money and seller trust. This service exists for three situations:
Your payments are misbehaving
Webhooks firing twice, refunds failing silently, payouts not reconciling. You need a rescue with a root-cause map, not another patch.
You're adding payments to a product
Checkout, subscriptions, invoicing, or PayPal alongside Stripe — integrated idempotent and safe to retry, with test coverage on the money paths.
What you get
Deliverables, not hours.
Payment flow map
A written diagram of where money moves: authorization, capture, ledger, provider calls, webhooks, reconciliation, and rollback paths.
Idempotent integration
Every payment operation safe to retry. Duplicate webhooks, timeouts, and race conditions handled by design, not by luck.
Refund & dispute logic
Partial refunds, currency edge cases, dispute evidence flows, and the state machine that keeps them consistent.
Tested money paths
Automated tests on the flows that touch money, plus a live-mode verification checklist before launch.
Process
How a payments engagement runs.
Map
We audit the current flow (or design the new one) and write down where every unit of money moves.
Output: flow mapBuild
Implementation in your codebase with idempotency keys, transactions, and locking where balances change.
Output: reviewed PRsVerify
Test-mode simulation of failures: duplicate webhooks, retries after timeout, partial refunds, currency mismatches.
Output: test suiteLaunch & watch
Live rollout with monitoring on payment events, and a reconciliation report after the first real volume.
Output: live systemEngagement
Start small or start serious.
The lowest-risk start is the fixed-price Payments Audit: a severity-ranked findings report on your existing payment flows, delivered in 5 business days — and credited in full if you continue into a build. Full integrations are quoted from a scoped conversation, not a pricing table: tell us where your money moves and you'll get a concrete number.
Questions
Asked before hiring us.
Can you fix an existing broken Stripe integration?
Yes — rescues are a specialty. Most payment emergencies trace back to webhook handling, retry behavior, or refund logic. We diagnose with a written root-cause map before changing any code.
Do you work with Stripe Connect for marketplaces?
Yes. Seller onboarding, split payments, multi-seller payouts, platform fees, refunds across connected accounts, and disputes — this is our core daily production work.
Which stacks?
Laravel/PHP is home ground; Node.js is also fine. Stripe, Stripe Connect, and PayPal, with MySQL/Redis on AWS or Cloudflare.
How do you handle access to a codebase that touches money?
Scoped repo access, no production credentials unless strictly needed, all changes through reviewed pull requests, and NDAs are fine.
What do you need to start?
A description of the flow (or the problem), repo access or a code export, and Stripe test keys. For audits, read access is enough.
Tell us where your money moves — we'll map it.
Reply within 1 business day. Start with the fixed-price audit or describe the build.