Dilavtech: Online Store for Plumbing and Electrical Supplies

About the project

Dilavtech sells plumbing, electrical supplies and tools in Moscow and the Moscow region. We built the whole store: the storefront, the API, an admin panel for managers and the data migration from the old platform. The store started on Strapi. When the catalog and the requirements grew, we moved it to a custom backend without changing page URLs or layout.

Storefront

A catalog of 20+ sections: a category tree and attribute filters that show the number of products for each value
Readable filter URLs (?f=group.value). Old links redirect with a 301, so search rankings are kept
Product pages with a gallery, specifications, one-click ordering, favorites and comparison
Before checkout, the cart checks prices and stock with the server. The order total is calculated on the server, not in the browser
Card payments via YooKassa. An unpaid order can be paid later from the customer account
Sign-up by phone with an SMS code, or by email with a confirmation link
Quick order requests for guests, with bot protection
Articles targeting local search queries to bring SEO traffic

Admin panel for managers

Instead of a general-purpose CMS, we built an admin panel shaped around how the store works. It has 9 sections: orders, requests, catalog, attributes, prices and stock, customers, site pages and settings.

The home screen shows new orders and requests, plus products that need attention: out of stock, no photos, no attributes, hidden from the site
A drag-and-drop category tree. Subcategories inherit filters
Every product field on one screen, with product duplication
Bulk price changes by a percentage per category, with history and rollback
Order pages with status changes, manager comments and a log of emails sent to the customer
Sign-in protection: a lockout after 5 failed attempts, and store settings are visible only to the owner

Prices and stock with bulk price changes

Integrations

An API for 1C and other accounting systems, with Bearer keys issued in the admin panel: product and order export, stock updates
Emails to customers and new-order notifications to managers
Full data migration from Strapi, with a check after the move
Image sizes of 320/640/1280 px and a sitemap for search engines

Tech stack

Storefront: Next.js (App Router), React, TypeScript, Tailwind CSS
API: NestJS 11, Prisma, PostgreSQL 18
Admin panel: React 19, Vite, TanStack Router / Query / Table, shadcn/ui, dnd-kit, TipTap
Shared zod schemas for the API and the admin panel, strict TypeScript, unit and integration tests
Docker, nginx, YooKassa payments

Project link