Web & Mobile Development

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?

The customer payoff

What you get

What you feel once it’s running.

  • Payment flows that survive the long tail: declined cards, retry windows, partial refunds, chargebacks, currency switches.

  • Subscription state owned by the system, not by your inbox — renewals, dunning, plan changes, cancellations all observable.

  • PCI scope kept small by design — tokenised everywhere, sensitive data never near your stack.

Phases

⏱ 10–20 weeks typical

How eCommerce & Payments actually runs.

  1. 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.

  2. 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.

  3. 03

    Stress-test

    Run the unhappy paths: declines, partial captures, refunds, disputes, fraud signals, EU 3DS2, VAT boundaries. Production sees fewer surprises this way.

  4. 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.

  • Production storefront + checkout, source code yours

  • PSP integration (Stripe / Adyen / Mollie / mixed) wired and documented

  • Subscription + billing engine if applicable, with admin console

  • Tax + VAT-OSS handling for the markets in scope

  • Funnel + ops analytics dashboards (PostHog / Stripe / your warehouse)

  • Operational runbook: refunds, chargebacks, dunning, on-call

Before you ask

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 build

The 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.