Our Lisbon Shopify development follows a methodology designed for Portuguese market success: (1) Strategy and planning (week 1): defining the store concept. Market positioning: understanding where the Shopify store fits in the Portuguese and international eCommerce landscape — target customers, competitive differentiators, and pricing strategy. Portuguese market: price-sensitive but quality-aware — the store must communicate value clearly. Payment strategy: determining which payment methods to offer. Our Portuguese recommendation: Multibanco (essential — integrated through ifthenpay, eupago, or SIBS), MB Way (increasingly important — integrated through the same providers), credit/debit cards (through Shopify Payments — Visa, Mastercard), and optionally Klarna or PayPal (for international customers). The payment integration: typically accounting for 1-2 days of development time and significantly impacting conversion rate. Shipping strategy: Posti integration, domestic shipping tiers (standard, express), and international shipping options. Portuguese shipping: free shipping threshold (common in Portuguese eCommerce — consumers expecting free shipping above €30-50), Madeira and Açores handling (Portuguese autonomous regions with different shipping rates and timeframes), and EU cross-border shipping. (2) Design (weeks 1-2): creating the store experience. Custom theme development: not installing a pre-made theme — designing and building a custom Shopify theme that reflects the brand. Portuguese design: warm, inviting, and quality-focused — design that communicates the brand's Portuguese identity while meeting international UX standards. The theme: developed using Shopify's Dawn base theme (optimised for performance) with custom sections, blocks, and styling. Mobile-first: designed primarily for mobile (65%+ of Portuguese eCommerce traffic on mobile) — fast-loading, touch-friendly, and efficient on smaller screens. Portuguese content: all customer-facing text in European Portuguese — product descriptions, navigation, checkout process, email templates, and error messages. Not translated from English or adapted from Brazilian Portuguese — written natively in pt-PT. (3) Development (weeks 2-4): building the store. Theme development: custom Shopify theme using Liquid, JavaScript, and CSS — implementing the designed UX with Shopify's section-based architecture for merchant editability. The theme: optimised for Core Web Vitals (LCP, CLS, INP) — targeting Lighthouse performance score 90+. Portuguese payment integration: ifthenpay or eupago installed and configured — Multibanco reference generation at checkout, MB Way payment flow, and payment confirmation webhooks. Testing: completing test transactions with each payment method to verify the full payment flow. CTT shipping integration: CTT API or Shopify app providing real-time shipping rates at checkout based on package weight and destination. Shipping zones: mainland Portugal, Madeira, Açores, EU, and rest of world — each with appropriate rates and estimated delivery times. Tracking: CTT tracking numbers automatically sent to customers in shipping confirmation emails. Portuguese invoicing: integration with InvoiceXpress, Jasmin, or Moloni — every Shopify order automatically generating an AT-compliant Portuguese invoice. The invoice: including the customer's NIF (if provided at checkout — optional for B2C, required for B2B), correct IVA rates by product, and sequential numbering per AT requirements. The invoicing integration: critical for Portuguese tax compliance — Shopify's native invoicing not meeting AT requirements. Product setup: product data structured for SEO and conversion — Portuguese-language product titles and descriptions (SEO-optimised for Portuguese search queries), high-quality product images (multiple angles, lifestyle shots, and zoom capability), variant management (sizes, colours, materials), and structured data (Product schema markup for Google Shopping eligibility). SEO: Portuguese SEO configured — meta titles and descriptions in pt-PT, URL handles in Portuguese (using readable Portuguese slugs, not auto-generated), and hreflang tags (if multilingual). Google Search Console: configured for the Portuguese market. RGPD: cookie consent management (Shopify app or custom) — genuinely blocking analytics and marketing cookies before consent. Privacy policy page in Portuguese. Customer data handling: configured for RGPD compliance. (4) Testing (weeks 4-5): ensuring everything works. Payment testing: end-to-end testing of every payment method — Multibanco (reference generation, payment completion, order status update), MB Way (mobile payment flow), card payment (Shopify Payments — Visa and Mastercard test cards), and any additional methods. Refund testing: processing refunds through each payment method — verifying that refund flows work correctly. Invoicing testing: verifying that Portuguese invoices generate correctly for each order — correct IVA, correct customer data, and AT communication. Shipping testing: verifying CTT rate calculation for different destinations and package weights — mainland, islands, EU, and international. Mobile testing: comprehensive mobile testing on iPhone and Android — the checkout flow, payment method selection, and order confirmation all functioning correctly on mobile. Portuguese language review: native Portuguese speaker reviewing all customer-facing text — correcting any Brazilian Portuguese, ensuring natural pt-PT language, and verifying that automated emails (order confirmation, shipping notification, delivery confirmation) are in proper European Portuguese. (5) Launch and optimisation (week 5+): going live and improving. Launch checklist: DNS configuration, SSL verification, payment provider live activation, shipping provider connection, Google Analytics 4 with consent mode, and Google Search Console submission. Post-launch monitoring: first 48 hours — monitoring orders, payments, and shipping rates. Verifying that real transactions process correctly with each payment method. Analytics: conversion funnel monitoring — identifying where Portuguese shoppers drop off and optimising. Typical Portuguese eCommerce optimisations: adding missing payment methods (if a specific bank payment method isn't available), adjusting free shipping threshold (testing different thresholds for conversion impact), and improving mobile checkout speed (reducing steps to complete purchase on mobile).