Web · Deep dive 06
eCommerce & Payments
The storefront people buy from and the rails the money moves on — designed together, not stitched. Stripe, Adyen, Mollie, PayPal; one-time, subscription, marketplace.
What this is
A commerce build that earns its conversion rate. Headless storefronts on Astro / Next.js, PSP integration that handles the edge cases (refunds, disputes, dunning, tax), and a checkout that ships with analytics already wired so you can see where money leaks.
Does this sound familiar?
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The current shop tops out at the basket — anything past it is duct tape.
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PCI scope keeps creeping; nobody's sure what's in scope and what isn't.
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Subscriptions go silent and you find out from the customer.
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Refund flow is a Notion doc the support team copy-pastes from.
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Cross-border tax / VAT-OSS / 3DS2 — somebody hand-wired four exceptions and they're all subtly wrong.
The customer payoff
What you get
What you feel once it’s running.
A storefront and checkout designed for the actual conversion path — fast, accessible, instrument-able.
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Payment flows that survive the long tail: declined cards, retry windows, partial refunds, chargebacks, currency switches.
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Subscription state owned by the system, not by your inbox — renewals, dunning, plan changes, cancellations all observable.
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PCI scope kept small by design — tokenised everywhere, sensitive data never near your stack.
Phases
⏱ 10–20 weeks typicalHow eCommerce & Payments actually runs.
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01
Scope
Map the products, the rates, the markets, the tax regime. The architecture call here decides whether the next two years feel like growth or whack-a-mole.
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02
Integrate
Pick the PSP (Stripe, Adyen, Mollie, mix), wire it in once, then write the rest of the system against the clean interface — never against PSP quirks.
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03
Stress-test
Run the unhappy paths: declines, partial captures, refunds, disputes, fraud signals, EU 3DS2, VAT boundaries. Production sees fewer surprises this way.
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04
Tune
Funnel analytics on day one — not a sprint after launch. The first month is reading the data and fixing the actual leaks, not the assumed ones.
The hand-off
What lands
What lands in your hands — every artefact, nothing hidden.
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Production storefront + checkout, source code yours
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PSP integration (Stripe / Adyen / Mollie / mixed) wired and documented
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Subscription + billing engine if applicable, with admin console
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Tax + VAT-OSS handling for the markets in scope
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Funnel + ops analytics dashboards (PostHog / Stripe / your warehouse)
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Operational runbook: refunds, chargebacks, dunning, on-call
Before you ask
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Q·01 Shopify, Centra, custom — what should we use?
Depends on the product and the team. Off-the-shelf is cheaper to start; custom storefront on a hosted backend (Shopify Hydrogen / Saleor / Medusa) wins when the brand experience is the product. We'll recommend based on margin, scale and editorial weight.
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Q·02 Do you handle subscriptions?
Yes — Stripe Billing or Adyen Subscription, with the dunning, plan changes and proration logic that off-the- shelf gets only 80 % right.
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Q·03 What about marketplaces (multi-seller)?
We've shipped marketplace flows on Stripe Connect and Adyen for Platforms — KYC, payouts, split capture. Not every team needs the platform model; we'll tell you if you do.
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Q·04 Can you migrate us off the current shop?
Yes — usually a phased cutover by SKU group or market, with the old shop and the new running side-by-side until the data and traffic are both safe to switch.
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Q·05 How do you handle PCI?
Tokenised end-to-end. We use hosted fields / Stripe Elements / Adyen Web Components so card data never touches your servers. PCI scope stays small by design.
Ready to start
Make the money move clean.
Two-day audit of your current funnel and PSP setup. We come back with a one-page proposal: what to keep, what to rewire, what the first 90 days look like.
Start a buildThe wider map
Every service page at a glance.
Each link below opens a dedicated page on that specific piece of one of our four service pillars. Jump sideways — different service, same way of working.
Digital Product Strategy
Service overview →Web & Mobile Development
Service overview →- 01 Fullstack Web Development
- 02 Backend Development
- 03 Frontend Development
- 04 Mobile App Development
- 05 Customer & Partner Portals
- 06 eCommerce & Payments — you’re here
- 07 Headless CMS & Multi-Channel