Core service · serverless in production
Custom e-commerce and sales platforms.
Custom serverless e-commerce — Cloudflare Workers + KV/D1, ultra-fast load and infrastructure cost near zero. Already delivered and running in production: Sensor Tattoo Fix runs on this same stack (store, admin, checkout, shipping and payments).
What we deliver
Not an institutional site with a buy button. The store your operation runs every day — from catalog to paid, shipped order.
- Serverless architectureCloudflare Workers + KV/D1 — high performance, infra cost near zero
- Responsive storefrontDesktop and mobile, catalog, search and product pages
- Checkout & cartFluid purchase flow, customer area and orders
- Admin panelProducts, categories, variants, prices, stock and orders
- PaymentsPIX, cards and national/international gateways (Asaas, Mercado Pago, Stripe, PayPal)
- Shipping & labelsCorreios, Super Frete, Jadlog, Uber Direct/courier, own fleet — with label generation/print
- SEO & domain emailAdvanced SEO and corporate email via DNS redirect — no mailbox subscription
- Phased deliveryIncremental go-live: essentials first, then evolve under contract
- Your codeSource and access 100% yours — no closed-platform lock-in
- IntegrationsERP and marketplaces on demand, according to the partner API
- After go-liveSupport and warranty after launch; optional maintenance
Reference case
Sensor Tattoo Fix — proof in production
Official store built by 3n20 on the same serverless architecture we offer to the market: checkout, admin, payments, shipping, labels, email and marketplaces — real ops, not a prototype.
- StoreStorefront, cart, checkout and customer area
- AdminProducts, prices, orders, shipping and config
- PaymentsPIX, cards and international PayPal
- LogisticsCorreios, Uber Direct and international shipping
- ChannelsOwn store, Mercado Livre, Shopee and Amazon
- InfraCloudflare Workers, KV, low operating cost
FAQ
Does 3n20 build a full online store?
Yes. Custom e-commerce: storefront, checkout, admin, PIX/cards, shipping (Correios, Super Frete, Jadlog, Uber Direct), SEO, domain email and source code 100% yours. Sensor Tattoo Fix is the live case.
How is this different from a brochure website?
Not a page with a buy button. Full operations: catalog, cart, checkout, admin panel, orders, payments, shipping/labels and low-cost serverless infrastructure.
Do you integrate ERP and marketplaces?
Yes, on demand according to the partner API. Scope is defined in the quote.
Does the client own the code?
Yes. Source code and access are 100% yours — no closed-platform lock-in.