E-commerce development for proxy and IP resellers

Why a product grid does not fit this catalogue

A standard store models a product with one or two variant axes. A proxy plan has four, and each combination has its own price, its own stock position and its own provisioning path. Expressed as platform variants, a modest catalogue becomes thousands of rows that nobody can administer and no customer can navigate.

The builds I have shipped in this niche model configurations as first-class database rows instead. A customer narrows by type, then location, then bandwidth, then term, and can never land on a combination that is not sellable — because invalid combinations are filtered out of the interface rather than rejected at checkout.

Delivery has to be part of the payment transaction

The economics of this niche only work if provisioning is automatic. A customer who pays at 03:00 and waits until morning for credentials opens a support ticket, and support volume is what destroys margin here.

So payment confirmation and credential delivery are one automated sequence, driven by the Stripe webhook rather than the browser redirect. If the customer closes the tab the instant they pay — which is common — the order still completes, the credentials still send, and nobody has to notice.

What comes with the build

• Plan matrix with type, location, bandwidth and term filtering, and no invalid states
• Stripe checkout covering one-off plans and recurring subscriptions
• Webhook-driven provisioning and credential delivery via authenticated email
• Renewal, expiry and failed-payment handling — the part that breaks one month after launch
• Admin panel for inventory, orders and customers, usable by a non-developer
• Per-use-case landing pages so each proxy type can rank independently

What this industry runs into

• Plans vary by type, location, bandwidth and duration — a normal product grid cannot express it
• Delivery has to be instant and automated, or support volume kills the margin
• Customers need a dashboard to see credentials, usage and renewals
• Payment processing in this niche needs careful handling

Questions specific to this work

Can you integrate with my upstream proxy provider’s API?

Yes — provisioning is an integration point rather than a fixed feature. Give me the API documentation and I will build against it, including the failure path for when the upstream is down and an order is already paid for.

How do you handle subscription renewals?

Renewals fulfil on the invoice.paid event, not on checkout.session.completed. Handling only the second is the most common bug in subscription stores, and it appears one month after launch when everyone has stopped watching.

Is Stripe the only option?

It is the one I have shipped most in this niche and the one with the cleanest subscription handling. If your risk profile means a different processor, the architecture does not change — provisioning still hangs off a verified webhook.

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