US-based Supply chain operator serving suburban businesses.
Logistics, Supply Chain, Warehouse Management, Web development
Logistics, Supply Chain, Warehouse Management, Web development
Angular (SPA), TypeScript, PrimeNG, Amazon Cognito, RxJs, PWA
Node.js, Nest.js (TypeScript), MongoDB with Mongoose, AWS S3, CI\CD, QuickBooks, JWT & Passport.js, EventEmitter
US-based Supply chain operator serving suburban businesses. The client required a modern, user-friendly platform to replace fragmented processes that involved manual inventory tracking, disconnected sales workflows, and financial recordkeeping in separate systems.
The client’s operations were hindered by outdated, non-integrated tools that couldn’t support the speed and accuracy demanded by modern supply chain workflows.
Key challenges included:
To meet the operational demands of suburban retail and distribution businesses, we developed a robust, full-featured web platform that simplifies supply chain management and automates financial integration with QuickBooks. The system architecture is built with NestJS, MongoDB, and TypeScript, enabling high scalability, maintainability, and seamless connectivity with external services.
The platform includes two distinct user-facing applications:
The platform was designed to address the day-to-day operational needs of supply chain administrators by providing a modern, web-based interface for managing inventory, pricing, and product data. The solution allows users to perform complex tasks like grouped edits of multiple products, organize goods in nested category structures, and receive real-time change notifications when modifying sensitive data — especially data that is financially significant or synced with external accounting systems.
One of the key business features is a highly interactive product management dashboard, where administrators can search, filter, sort, and update large datasets efficiently. The data-rich tables offer live search, multi-field filtering, and pagination, allowing teams to work faster and with fewer manual errors. This significantly improves oversight across product lines and streamlines routine updates, helping teams maintain pricing accuracy and product consistency at scale.
Form complexity and data accuracy were also critical to business operations. To ensure clean input and dynamic workflows, the platform includes advanced form behavior that adapts in real time — for example, when adding new items, applying mass updates, or responding to conditional fields. Route guards further enhance this by warning users if they attempt to leave a form with unsaved changes, preventing accidental data loss and improving confidence in the interface.
Overall, the platform enables a smoother, more intuitive experience for administrative teams managing high volumes of products and pricing changes. It helps reduce the number of errors, speeds up repetitive tasks, and ensures that all changes are aligned with both operational and financial systems.
Technically, the platform is built using Angular 19 on the frontend, with styling and interactivity powered by the PrimeNG component library. For complex data workflows, it leverages Reactive Forms, which allow for conditional logic, dynamic rendering, and real-time validation. Key UI components, such as <p-table>, are enhanced with lazy data loading to optimize performance when handling large datasets.
On the backend, the system runs on a NestJS architecture written in TypeScript, ensuring scalability and clear separation of business logic. All core operations — from inventory updates to user actions — are processed through modular services and controllers. Data is stored in MongoDB, accessed via Mongoose, which supports flexible document structures. Critical actions (such as updates to synced product records) trigger backend-level events via Node.js EventEmitter, enabling automated logging or further handling as needed. Environment configurations and sensitive keys are securely managed through @nestjs/config and .env files to support safe deployment across development, staging, and production environments.
The platform enables finance and sales teams to stay fully aligned by automatically syncing invoices, payments, and customer data with QuickBooks in real time. This eliminates the need for manual entry, reduces errors, and ensures that financial records always reflect operational activity without delay. Sensitive information is protected through role-based access control, allowing each user — whether a sales rep or finance manager — to interact only with the data relevant to their role. At the same time, built-in cloud file storage makes it easy for teams to upload product photos, invoices, or supporting documents directly through the interface and retrieve them later for quoting, auditing, or customer support.
Whether working from the office or on the road, users experience a consistent interface across devices. Field reps can manage deals and orders on the go, while managers access up-to-date performance data without waiting for manual reports. The platform scales easily with business growth, maintaining uptime and performance as data and user volume increase.
The QuickBooks integration is implemented as a dedicated NestJS service written in TypeScript, using the official QuickBooks SDK. This service handles bi-directional synchronization of invoices, customer records, and payment data in real time. Authentication and authorization are managed using Amazon Cognito on the frontend and Passport.js with JWT on the backend, enabling secure, role-based access throughout the system. For document and image storage, the platform uses AWS S3, allowing users to upload files via the UI and access them securely via signed URLs generated by the backend. This technical foundation ensures data integrity, scalability, and seamless connectivity between systems.
The mobile side of the platform is delivered as a Progressive Web App (PWA), specifically designed for modern smartphones. The app can be installed directly on the user’s home screen and launched like a native application, providing a seamless experience without browser UI. This makes it especially convenient for field sales representatives who need fast, reliable access to tools while working outside the office.
One of the core workflows is product ordering, optimized for both speed and simplicity. Reps can browse large product catalogs through a virtual scrolling list that only loads visible content, ensuring quick navigation even with hundreds of items. Products can be added instantly to a collapsible cart drawer, allowing users to build an order without leaving the current screen. This streamlined interaction makes it possible to complete orders on-site — during customer visits — without unnecessary taps or screen changes.
Thanks to Service Workers, core resources and key data are cached locally, allowing sales representatives to stay confident that their current order won't be lost during temporary connection outages. While creating new orders requires an active internet connection, in-progress orders remain accessible and are saved automatically, ensuring data is protected even in case of short-term disruptions.
A full order history is also available, with filtering, sorting, and nested item views. Sales reps can quickly review past transactions, check item details, and track delivery or payment statuses. The app remains reliable even with unstable connections: reps can prepare orders offline, and the system automatically syncs the data once connectivity is restored. Updates are handled in the background via a custom version management flow, prompting the user only when a new version is available. This makes the mobile experience fast, consistent, and dependable — no matter where the rep is working.
The mobile app is built with Angular 19 using PWA architecture, allowing for offline functionality, asset caching, and home screen installation. The virtual product list is implemented with lazy loading for better performance. Orders are submitted via secure POST requests to a NestJS backend, where data is validated and stored in MongoDB.
Order history is served through optimized Mongoose aggregation pipelines, reducing frontend load. Reactive UI behavior is powered by RxJS, while GitHub Actions CI/CD pipelines automatically build, test, and deploy new versions. When a new release is available, the app prompts users to update — ensuring they always work with the latest, most stable version.
The implementation of the supply chain management platform significantly enhanced the client’s operational efficiency. Sales representatives now have a mobile-optimized Progressive Web App (PWA) that allows them to create orders, review history, and manage carts on the go. Even if the connection to QuickBooks is temporarily unavailable, all actions are recorded in the local database and automatically synchronized once connectivity is restored. This ensures uninterrupted workflows and data consistency without any user disruption.
Administrators gained centralized control over inventory, pricing, orders, and financial operations. The interface provides powerful dynamic tables with filtering, search, and lazy data loading. Financial data is synchronized in the background with QuickBooks via a dedicated service built in NestJS, reducing manual input, improving accounting accuracy, and accelerating bookkeeping tasks.
The platform’s technical foundation is built on NestJS, MongoDB, and TypeScript, offering stability, scalability, and ease of maintenance. Automated CI/CD pipelines powered by GitHub Actions enable rapid and secure deployments without interrupting user activity. With structured configuration management, role-based access through Amazon Cognito, and event-driven logic via EventEmitter, the backend delivers a secure and predictable environment for all operations.
Today, the platform acts as a central hub for managing products, orders, and financial records — accessible from the office or in the field. This project demonstrates how, with the right architecture, even suburban businesses can operate with the efficiency and precision of enterprise systems, without sacrificing flexibility or customer focus.
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