ERP · Web + Mobile

BizTrac ERP

Inventory and business operations on web and mobile.

An ERP and inventory management platform with a mature Flutter mobile app (barcode/QR scanning, charts, PDF generation) and a web app being migrated from Express.js to Next.js.

FlutterNext.jsTypeScriptTailwind
Hire me →

Problem

Teams needed to manage inventory and operations from their phones as well as the office, and the original web app was built on an older Express.js stack.

Solution

Built a Flutter mobile app with barcode/QR scanning, charts, and PDF generation, and started migrating the web platform from the legacy Express.js app to Next.js, keeping the old apps in the repository as a reference during the move. Rolled out the new BizTrac "Ascent" brand across web and mobile.

System architecture

  1. Flutter mobile app for day-to-day inventory work: scanning, charts, and PDF documents.
  2. Web platform moving from a legacy Express.js API and web app to Next.js.
  3. Legacy apps kept alongside the new code as a reference during the migration.
  4. Shared brand system (colors, typography, logo, icons) across web and mobile.

Backend logic

  • Incremental migration: screens and endpoints are rebuilt on Next.js while the legacy app remains the reference.
  • The mobile app generates PDF documents on device and reads barcodes and QR codes with the camera.
  • Brand tokens (colors, Manrope typography) applied through the Tailwind config on web and theme tokens in Flutter.

Tech stack

Mobile

  • Flutter
  • Dart
  • Barcode/QR scanning
  • PDF generation
  • Charts

Web

  • Next.js
  • TypeScript
  • Tailwind CSS

Legacy

  • Express.js (being retired)

Outcome / impact

  • Teams can work from their phones as well as the web.
  • The web stack moves to a modern, maintainable framework.
  • One consistent BizTrac brand across every surface.

Result: One product across web and mobile, on a modern web stack, under a single brand.

Related writing