Your app takes payments in the demo. I make sure it works when real money flows.

What I fix

• Webhooks missing, unverified or not retried

  Customers pay but never get access

• Subscription states out of sync (trials, upgrades, cancellations)

  People keep what they stopped paying for, or lose what they paid for

• No failed-payment handling (dunning, card updates)

  Revenue quietly lost every month

• Refunds, disputes and chargebacks not handled

  Fees, angry customers, account risk

• VAT and sales tax not set up

  Tax you owe but never collected

• Test mode to live mode never properly checked

  Launch day surprises

I work mainly with Stripe; Paddle or Lemon Squeezy on request.

Packages

• Payments Health Check

  £250

  2 working days

  Review of your payment setup, written report ranked by risk, 30-min call

• Payments Fix

  from £750

  3–5 working days

  Everything from the Health Check fixed and tested end to end, go-live checklist

• Full Billing Setup

  from £1,800

  1–2 weeks

  Subscriptions, trials, coupons, tax, invoices and customer portal built properly

• Monthly Care

  £400/month

  Ongoing

  Monitoring, small changes and fixes, priority support

Health Check fee comes off the Fix if you go ahead. Larger or ongoing work: £450/day.

How it works

1. Send me your app link and what's going wrong.
2. 15-minute call to agree a package and fixed price.
3. You give me read access to your code and a restricted key for your payment provider. I never need your passwords.
4. I fix and test every payment path: new customer, renewal, failed card, refund, cancellation.
5. Handover: a short write-up of what changed and how to check it's still working.

Why me

Senior engineer with 7+ years' experience, 3+ building a payments and subscription-billing platform used by other businesses.

• Billing from the inside: invoices, credit memos, coupons, tax and accounting journals
• Stack: Stripe, TypeScript, React, Vue and Nuxt
• Plain English: you'll understand what was wrong and what I changed