Shopify Development Services for Canadian E-Commerce

Shopify development services encompass custom theme design, app development, third-party integrations, checkout customization, and performance optimization for Shopify stores. A Shopify development agency like AtlanticWorks builds stores that go beyond templates: creating custom functionality, connecting to ERP and fulfillment systems, and optimizing for conversion. Services range from basic theme customization to full Shopify Plus enterprise implementations with B2B features and multi-store architecture.

Timeline depends on complexity. A basic Shopify store with theme customization takes 2-4 weeks. Custom theme development from scratch takes 6-10 weeks. Full Shopify Plus implementations with ERP integration, custom apps, and data migration typically take 12-20 weeks. We provide detailed project timelines during the discovery phase based on your specific requirements.

Shopify Plus is the enterprise tier offering checkout customization (Checkout Extensibility), Shopify Flow automation, higher API limits (unlimited vs. 2 calls/second), multi-store management, B2B wholesale features, and dedicated support. We recommend Plus for merchants doing over $1M annually, those requiring checkout branding, or businesses with complex B2B requirements. The cost starts at $2,000/month USD but scales with GMV.

Yes. We build private Shopify apps for specific business needs like custom integrations, unique checkout flows, subscription logic, or specialized functionality not available in the app store. We also integrate and configure existing apps from the Shopify App Store, and can build custom admin UI extensions for your team.

Absolutely. We specialize in connecting Shopify with ERP systems (NetSuite, SAP, Microsoft Dynamics), 3PLs (ShipBob, ShipStation, Flexport), and custom warehouse management systems. Integration includes inventory sync, order fulfillment automation, and real-time data flow between systems. See our shipping automation services for more details.

We focus on e-commerce businesses that need more than just a store. Our expertise spans Shopify development, ERP integrations, shipping automation, and marketing. You get one partner for your entire e-commerce stack rather than coordinating between multiple agencies. We're also a certified HubSpot partner, so we can connect your store to CRM and marketing automation.

Shopify development costs vary based on project scope. Theme customization projects start at $5,000-$15,000. Custom theme development ranges from $20,000-$50,000. Full Shopify Plus implementations with integrations typically range from $50,000-$150,000+. We provide detailed quotes after a discovery call to understand your specific requirements and business goals.

Yes. We regularly customize existing themes, add features, improve performance, and fix bugs. If your current theme is limiting growth or causing technical issues, we can assess whether to customize or rebuild. Sometimes a strategic rebuild is more cost-effective than patching an older theme, and we'll give you an honest recommendation.

There are four primary Shopify development paths, and most growing stores use more than one over time. Theme customization modifies an existing Shopify theme (Dawn, Prestige, Impulse, etc.) for branding, layout, and conversion improvements — best for launches and stores under roughly 500 SKUs with standard checkout needs. Custom theme development builds a bespoke storefront from scratch when off-the-shelf themes cannot support your UX, performance, or merchandising requirements. Custom app development adds private functionality — subscription logic, B2B pricing rules, ERP-fed inventory, or admin tools — when the Shopify App Store has no fit. Shopify Plus builds combine checkout extensibility, Shopify Flow automation, B2B wholesale features, and higher API limits for enterprise-scale operations. Integrations connect Shopify to ERP, 3PL, CRM, and finance systems so orders, inventory, and customer data flow automatically. The right path depends on catalog complexity, order volume, back-office systems, and how much of the stack must be owned versus configured.

Choose theme customization when your catalog is straightforward (under 500–1,000 SKUs), you sell primarily DTC or simple wholesale, your checkout and shipping rules fit Shopify's defaults, and your main goals are faster launch, lower cost, and brand polish on a proven theme foundation. Typical scope includes custom sections, homepage redesign, collection filtering, speed optimization, and conversion-focused layout changes — usually $5,000–$15,000 and 2–4 weeks. Choose a custom theme build when you need a unique shopping experience that no premium theme supports: complex product configurators, multi-step B2B quoting, account-specific catalog views, heavy editorial content architecture, or Core Web Vitals performance that off-the-shelf themes cannot hit. Custom builds also make sense when you have outgrown a patched theme and ongoing fixes cost more than a clean rebuild. Custom theme projects typically run $20,000–$50,000 over 6–10 weeks. If you are unsure, a discovery audit comparing your requirements against theme limits is the fastest way to decide.

Custom app development is the right path when your operational requirements exceed what theme edits and App Store plugins can reliably deliver. Common triggers include: syncing inventory or pricing from an ERP (NetSuite, SAP, Dynamics, Syspro) in real time; custom B2B workflows such as contract pricing, approval queues, or company-level catalogs; subscription or replenishment logic with rules no existing app handles cleanly; checkout or cart behavior that standard Shopify cannot support without a private app or Shopify Function; and admin-side tools your team needs inside Shopify (bulk repricing, fulfillment exceptions, custom reporting). Off-the-shelf apps work well for email, reviews, and basic upsells. Custom apps make sense when data must move between systems on a schedule you control, when compliance or audit trails matter, or when stacking five apps creates conflicts and performance drag. Private apps run on your store only; public apps are built when you plan to distribute via the Shopify App Store. Budget typically starts around $10,000 for a focused integration app and scales with API surface area and ERP complexity.

Shopify Plus is the right development path when standard Shopify plan limits become a bottleneck for growth, operations, or brand control — not simply because revenue crossed a threshold. Choose Plus when you need checkout customization (branded checkout, upsells, custom fields, payment routing) that only Checkout Extensibility on Plus provides; when B2B wholesale features — company accounts, catalog-specific pricing, payment terms — are core to revenue; when Shopify Flow automation must replace manual ops across orders, tags, and fulfillment; when API call volume exceeds standard limits (2 calls/second) due to ERP sync, personalization, or high-traffic integrations; when you run multiple stores (DTC, B2B, international) under one Plus organization; or when peak traffic (flash sales, product drops) requires Shopify's dedicated infrastructure. Plus starts at roughly $2,000 USD/month and scales with GMV. Many Canadian merchants doing $1M+ annually benefit from Plus, but some high-complexity B2B stores need Plus features earlier, while high-volume DTC brands on standard plans may not need Plus until checkout or API limits bite. AtlanticWorks evaluates whether Plus unlocks revenue you cannot get on standard Shopify before recommending the upgrade.

Integration requirements scale with operational complexity. Starter stores (under $500K GMV, single warehouse, DTC focus) typically need payment processing, Canada Post or Purolator shipping rates, email marketing (Klaviyo or HubSpot), and basic analytics — often handled by native Shopify apps with minimal custom development. Growth-stage stores ($500K–$2M, multiple channels, small ops team) add 3PL or WMS connections (ShipStation, ShipBob), inventory sync across locations, CRM lead capture from the storefront, and often automated tax or accounting (QuickBooks, Xero). Complex operations ($2M+, B2B and B2C, ERP-driven inventory) require bidirectional ERP integration for products, inventory, orders, and invoicing; CRM sync (HubSpot, Salesforce) for account-level sales visibility; custom carrier or freight APIs for LTL and pallet shipping; and marketing automation tied to order and lifecycle events. Enterprise and multi-brand setups add multi-store architecture, separate B2B and DTC data flows, EDI for large retail partners, and dedicated middleware (iPaaS or custom) when point-to-point integrations become unmaintainable. The integration layer is usually what determines project timeline and cost more than the storefront itself.

Start by scoring three dimensions: catalog and UX complexity, scalability and traffic needs, and operational and integration requirements. Low complexity on all three → theme customization on standard Shopify, launch in weeks. High UX complexity but moderate ops → custom theme on standard Shopify, add integrations as revenue grows. High ops complexity (ERP, B2B, multi-warehouse) but standard storefront UX → theme customization or premium theme plus custom apps and ERP integration; evaluate Plus if checkout or API limits appear. High complexity across all three → Shopify Plus with custom checkout, custom apps, and full stack integration — typical for manufacturers, wholesalers, and multi-channel brands doing $2M+ with back-office systems already in place. Scalability signals that push you toward Plus or custom apps include: manual order processing eating staff time, inventory discrepancies between Shopify and warehouse, inability to show account-specific pricing, checkout abandonment from a generic experience, and development workarounds that break after every Shopify update. AtlanticWorks maps your current stack and growth plan to a phased roadmap so you are not over-building on day one or under-building before peak season.

Yes — and most enterprise Shopify builds do exactly that. A typical phased approach for a Canadian manufacturer or wholesaler: Phase 1 launches theme customization or a custom theme on standard Shopify with core ERP product and inventory sync. Phase 2 adds custom apps for B2B portal logic, freight shipping, or HubSpot CRM workflows as order volume grows. Phase 3 upgrades to Shopify Plus when checkout customization, native B2B features, or API headroom justify the platform fee. Integrations often span all phases because ERP and 3PL connections are foundational, not optional add-ons. Combining paths in one project makes sense when you are migrating from Magento or WooCommerce and need parity on day one — custom theme, Plus checkout, ERP integration, and B2B catalogs launched together to avoid a partial migration that frustrates customers. We scope combined projects with clear milestones so each layer is testable before the next ships.