Software development • Montreal

E-commerce Software Development in Montreal

Selling online in Canada means bilingual product pages, taxes that change at every provincial border, Interac e-Transfer alongside cards, and shipping across a very large country. Off-the-shelf platforms get you started. They stop fitting when your catalogue, pricing rules or fulfilment process no longer match their template.

DaniMaster builds custom e-commerce software for retailers, wholesalers and service businesses in Montreal and across Canada: online stores, order and inventory systems, point-of-sale tools and the integrations that tie them to your accounting and ERP. We have run payment flows and a deals platform in our own products.

What we build

We build the whole chain, from product to delivery.

• Bilingual online stores with Canadian tax calculation for GST, HST, QST and PST, and card, PayPal and Interac e-Transfer payments
• Order management system development: one view of orders from your website, marketplaces, phone and in-store sales, with returns and partial shipments
• Inventory management software: stock across locations, reorder points, barcode scanning and store sync so you never sell what you do not have
• Point of sale (POS) software: in-store checkout that shares products, customers and inventory with your online channel and works offline
• Retail software solutions: loyalty programs, gift cards, promotions, deals and flyer pages
• Supply chain software: supplier portals, purchase orders, receiving, landed-cost tracking and forecasting
• Integrations with Odoo, ERPNext, QuickBooks, Shopify, WooCommerce and Canada Post

We work in PHP, Node.js and TypeScript with PostgreSQL or MariaDB. If you already run Shopify or WooCommerce and only need a custom piece, we build just that.

How we work

E-commerce projects touch money and stock, so we are careful about sequence.

1. Discovery. We map your products, pricing rules, tax situations, channels and fulfilment steps, and find out which of your data is clean. One or two sessions in Montreal or by video. 2. Design. We produce mockups of the storefront, checkout and back-office screens in French and English, plus a data model for products, orders and stock. 3. Build. Payments, taxes and inventory logic are built and verified first, since they cost you money if wrong. 4. Test. We run test orders through every payment method, every province, refunds, partial shipments and out-of-stock scenarios, on real phones. 5. Launch. We migrate products, customers and order history, run new and old systems in parallel if needed, and go live with a rollback plan. 6. Support. We monitor orders, payments and sync jobs after launch and fix what live traffic reveals. Ongoing support covers new features and seasonal promotions.

Proof: payment, tax and commerce systems we operate

We operate commerce and payment software ourselves, which shapes how we build it for clients.

FacilInvoice, our bilingual invoicing SaaS, runs the payment flows an online store depends on. Clients pay through public pages by card, PayPal, bank transfer or Interac e-Transfer. Stripe handles subscriptions. A Canadian multi-province tax engine computes GST, HST, QST and PST for every invoice. Interac e-Transfer payments are reconciled automatically by reading bank notifications, checking their authenticity and matching them to open invoices.

BizLocal, our Quebec and Canada business directory with about 49,000 businesses, runs a deals and flyers section and an online-orders hub that points consumers to businesses that sell online. It also handles partner billing with referral fees and syncs to Odoo CRM.

Across our brands we use Odoo 17 and ERPNext as central ledgers, connected by API, so invoices, customers and products stay consistent. We have connected Stripe, Supabase and Cloudflare in production.

What it costs and how long it takes

E-commerce costs vary with catalogue size, number of channels and back-office logic. Ranges in Canadian dollars:

• Custom storefront with Canadian taxes, bilingual catalogue, payments and shipping, integrated with your accounting: $15,000 to $40,000, six to twelve weeks
• Order management system unifying web, marketplace and in-store orders: $15,000 to $45,000, six to fourteen weeks
• Inventory system with multi-location stock, barcodes and store sync: $12,000 to $35,000, five to twelve weeks
• Full retail platform with store, order management, inventory, POS and supplier portal on Odoo or ERPNext: $50,000 to $150,000 over four to eight months
• Custom module for an existing Shopify or WooCommerce store: $3,000 to $12,000
• Hosting, monitoring and support: $300 to $2,000 per month

Prices depend on scope. Messy data, many suppliers and complex pricing push costs up. We quote a fixed price after discovery, and we will tell a Montreal retailer when Shopify plus two apps is the right answer.

Why a Montreal e-commerce team

Canadian e-commerce has rules that generic platforms and distant teams get wrong. A Montreal partner gets them right.

Bilingual commerce. Product pages, checkout, emails, receipts and support in French and English, meeting Quebec's language requirements.

Taxes that are correct. GST, HST, QST and PST differ by province and product type. We have built a multi-province tax engine and know where the edge cases are.

Payment methods Canadians use. Interac e-Transfer is common for B2B and many consumers. Cards and PayPal need Canadian processing.

Law 25 compliance. Customer accounts, order histories and marketing consent fall under Quebec's privacy law. We build consent, data access and deletion into the store.

Canadian hosting on request. Your customer and order data can stay on servers in Canada.

Shipping reality. Canada Post, regional carriers and the cost of shipping to remote areas are part of the design.

Eastern time zone. Your sales peak during Canadian hours and so does our support.

Who this is for

Custom e-commerce software is the right call when your business has outgrown a template. Common situations:

• A Montreal retailer with one or two stores and a website. Inventory lives in three places and none agree. An integrated inventory and POS system gives you one stock count across channels.
• A wholesaler or distributor. Customers order by phone and email, each with their own pricing and credit terms. A B2B portal lets them order themselves.
• A manufacturer or importer. Purchase orders, supplier lead times and landed costs live in spreadsheets. Supply chain software ties purchasing, receiving and inventory together.
• A specialty shop selling across Canada. Shopify handles the basics but cannot manage your provincial tax edge cases, bilingual product data or custom shipping rules.

If your tools force you to work around them every day, it is time for software that fits. Start with a free 30-minute call and we will scope the first step together.

Frequently asked questions

Should we build custom or use Shopify or WooCommerce?

If you sell a standard catalogue to consumers and your taxes, shipping and pricing are straightforward, Shopify or WooCommerce is usually the right start, and we will say so. Custom software makes sense for B2B pricing, multi-location inventory, a POS that shares stock with the web store or supplier workflows.

How do you handle Canadian sales tax across provinces?

We calculate GST, HST, QST and PST based on the destination province and product type, with exemptions where they apply. Rates live in configuration so changes do not require code. Tax amounts appear separately on receipts and flow to your accounting system with the right codes.

Can the system work with our existing accounting or ERP software?

Yes. Orders, payments, customers and stock movements can sync to Odoo, ERPNext, QuickBooks or most systems with an API. We define which system owns each type of record, so you avoid duplicates and conflicting counts. If your software has no API, we work from scheduled exports.

What happens when the internet goes down in the store?

A POS we build keeps working offline. Sales are recorded locally and synced to the central system when the connection returns, with stock adjusted and conflicts flagged for review. Card processing depends on your terminal provider, so we configure store-and-forward where supported.