PROJECT

E-commerce Solutions for POS, Inventory and Admin Workflows

Custom software development, Responsive commerce interfaces, Shopping cart software, Checkout and payment processing, Inventory management software, Product management, API and synchronization

  • Industry: Retail
  • Portugal Location: Portugal
  • Delivery time: 16 weeks
  • Technologies: Python, PHP
4+ months

This online retailer from Portugal spends time keeping products, stock, carts, orders and payments aligned across daily commerce operations. The e-commerce solution brings product listings, shopping carts and checkout into one system. It also handles payment processing, inventory management and administration for the retailer. Responsive interfaces, operational dashboards and API-based synchronization keep product and commerce data connected.

Summary

Problem

The retailer manages products, stock, orders, payments and operational data across commerce workflows that need better coordination.

Solution

The solution became a responsive commerce system with product administration, shopping cart software and checkout. It also includes payment processing, inventory management and central dashboards.

Result

The software is made to reduce manual work across product, order and stock operations.

Client story

The client is an online retailer from Portugal. It manages product listings, shopping, checkout, payments and administration for online commerce.

Product data, stock levels, carts, orders and payments require consistent handling across the storefront and administration work. Existing payment or order failures cost time and require attention.

The request was simple: stabilize the existing application and centralize administration. The client also asked for dependable cart, checkout, payment and order-status workflows.

The solution was shaped as connected modules for products, inventory and shopping carts.

API synchronization provided operational connections, with room for later forms, automations and integrations.

The client asked for

  1. Work well on phones, tablets, desktops and touchscreen devices
  2. Fix application, API, performance, security and production bugs
  3. Manage products, stock, shops, orders, customers and users centrally
  4. Keep cart, checkout, payment, login and order status dependable

Why ready-made software did not fit

Ready-made products in the comparison focus on mobile-app feedback, personalization, user behavior and optimization rather than a complete commerce workflow. A custom solution was needed to address product, inventory and cart work together with checkout, payment and administration.

Project overview

The solution was designed around a responsive storefront and an administration panel, so the retailer has one structure for product, stock and order data. The interface works across phones, tablets, desktops and touchscreen retail devices.

To handle product and stock work, a dedicated administration screen was provided. It includes search, filters, product editing and stock summaries.

The shopping flow includes product cards, cart quantity controls and item removal. Checkout, payment method selection and order confirmation complete the path to a confirmed order.

A central dashboard brings together sales, inventory and expenses. Filtered order views help the retailer review information by shop or channel.

The API and synchronization monitor shows product submissions, external-system connections and synchronization status. Backend services and REST APIs support exchanges with commerce tools and operational systems.

Key features delivered

  • Product listings and category management
  • Stock-level tracking
  • Shopping cart management
  • Checkout and payment processing
  • Order management
  • Responsive storefront interfaces
  • Central sales and expense dashboard
  • API-based product submission
  • Synchronization status monitoring
  • Audit information and filtered views

Can be added

+ Advanced search with group-by views + Dynamic area and shop management + Marketplace synchronization + POS synchronization + Localized storefronts + Customer and seller roles + Analytics and KPI views + Shipping data integration

Who else can use this solution

Businesses with a similar commerce task can adapt the same solution to their products, channels, stock rules and administration needs.

A small retail store

Task It needs POS, inventory, sales and expense visibility in one place.
How the solution helps The solution brings product, stock, order and operational information into connected administration views.
Retail stores

A multi-vendor marketplace

Task It needs seller, customer, order, payment and payout workflows.
How the solution helps The modular system can organize marketplace products, orders, payments and role-based access.
Retail stores

A multi-branch retailer

Task It needs synchronized inventory, localized storefronts and centralized administration.
How the solution helps The dashboards, shop selectors and synchronization monitor provide a shared view across branches and channels.
Retail stores

Technology stack

Python

API and backend services

Python supports API and backend services for the commerce application.

PHP

Commerce and payment services

PHP supports commerce modules, administration and payment connections where required.

fastapi

Build API services

fastapi (a Python framework for building APIs) supports backend services for product and commerce data.

Cartridge

Manage shopping carts

Cartridge (a Django shopping cart application) provides cart functionality for products and quantities.

django-cart

Store cart sessions

django-cart (a lightweight Django cart library) keeps shopping cart items in the commerce flow.

razorpay

Process online payments

razorpay (a Node.js payment SDK) connects the application with Razorpay payment processing.

REST API

Exchange commerce data

REST APIs submit product details and exchange information with external commerce systems.

Integrations

Shopify

Product details can be submitted through an API for Shopify integration.

Payment gateways

Payment data passes between checkout and the selected payment gateway.

POS systems

Product, inventory and sales information can be synchronized with POS systems.

Marketplaces

Product, order and inventory data can be exchanged with marketplace services.

External APIs

REST API requests, product submissions and synchronization records are monitored in the system.

The result

Product and stock work stays in one administration view

The first screen gives the retailer a direct view of products, categories, stock levels and orders. Search and filters keep product management focused, while the stock summary makes inventory information easier to review.

The screen is built for administration and inventory control, with product details and order data connected in the same workspace.

How it works

  1. The administration panel shows product listings, categories and inventory levels.
  2. The product table presents product details with search and filters.
  3. The stock summary connects inventory information with order data.
  • Add and edit product details
  • Review stock-level summaries
  • Manage order information
Product and stock administration

Product and stock administration

Functions on this screen
Manage users and products Organize Digital Products Track Stock Levels Submit product details via API Advanced Search Features

The purchase path connects cart, checkout and payment

The shopping screen keeps cart management and checkout together. Product cards lead into cart items, quantity controls, payment details and order confirmation.

Payment processing is part of the same commerce path, so customer order details, payment data and the confirmed order remain connected.

How it works

  1. The screen presents product cards and cart items with their quantities.
  2. The checkout form combines customer order details with the selected payment method.
  3. The payment flow processes payment data and shows the confirmed order.
  • Add, update and remove cart items
  • Complete checkout details
  • Review order confirmation
Shopping cart and checkout

Shopping cart and checkout

Functions on this screen
Manage Shopping Cart Full Checkout Support Implement secure payment processing

Sales and inventory become easier to review

The central dashboard gives the retailer sales, inventory, expenses and shop-organized orders in one view. Summary cards and filtered lists support daily operational review.

Shop and area selectors filter the dashboard by the selected commerce view.

How it works

  1. The dashboard shows daily summary figures, sales reports and inventory summaries.
  2. The expense view presents expense data alongside operational summaries.
  3. Shop and area selections filter the order list by the selected commerce view.
  • Review merchant sales reports
  • Track inventory summaries
  • Filter orders by shop or area
Tip: The dashboard keeps sales, stock and expense information close together for operational review.
Central commerce dashboard

Central commerce dashboard

Functions on this screen
Manage Product Sales Track Stock Levels

API exchanges have a visible status

The synchronization monitor gives administrators and developers a clear view of API requests, product submissions and external-system connections. Audit entries are also shown in the monitor.

This screen makes synchronization information easier to inspect when product data moves between the commerce application and connected services.

How it works

  1. The monitor lists REST API requests and product submission status.
  2. It presents synchronization records and external API data.
  3. Audit entries record the available audit information for the monitored activity.
  • Review product submission status
  • Inspect external-system connections
  • Check synchronization records
Note: The monitor brings API, synchronization and audit information into one operational view.
API and synchronization monitor

API and synchronization monitor

Functions on this screen
Submit product details via API Backend services development

What the solution gives

With this solution, the retailer can:

  • Manage product listings, categories and stock levels
  • Run responsive shopping, cart and checkout workflows
  • Process payments and connect confirmed orders
  • Review sales, expenses, inventory and shop-organized orders
  • Submit product details through APIs
  • Inspect synchronization and audit information

In the end

In the end, the result was a commerce workspace made to reduce manual work and rework from product management through checkout, payment, orders and stock control.

FAQ

Thinking about building a similar system? Read the answers below to see how the solution can be structured around commerce operations, integrations and future changes.

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