DB Courier

Role

Design & full-stack development

Type

Business website & tracking system

Stack

Live website for a USA-to-Peru import courier: landing page, instant shipping quote, order registration, package tracking and an internal operations panel.

The challenge

The business ran on spreadsheets and WhatsApp. Customers needed to quote a shipment and track an order on their own, without forcing the owner to change how she works overnight.

What I built

A framework-free site in vanilla HTML, CSS and JavaScript, with a serverless API on Netlify Functions over Supabase PostgreSQL. The quote calculator runs entirely in the browser with the business’s real rules; tracking returns only the requested order. Staff work from a panel with two roles, enforced twice: row-level security in the database and role checks in every function.

The five-step route, drawn as a flight path

Tracking by guide number, with an optional ID check

Order registration with document upload to private storage

Staff access to the operations panel: orders, settlements and finance

Highlights

01In production at dbgroup.com.pe
02Quote calculator with freight, customs and tax rules
03Operations panel: orders, settlements with printable sales notes, and finance
04Two-layer authorization: RLS plus role checks in serverless functions
05Order numbers generated in the database, safe under concurrent use

Built with

HTMLCSSJavaScriptSupabasePostgreSQLNetlify

Next case

Kallpa

All work ⁸