Web Development Company in Mexico City

A Mexico City web build is quoted by commerce depth: a brochure or marketing site at CDMX professional rates, a mid-market e-commerce build on Vtex or Magento with Mercado Pago, OXXO Pay, SPEI, and CFDI 4.0 invoicing, or enterprise platforms with Latam-wide multi-country routing in the Mercado Libre pattern, headless commerce, and SAT integration. Scope drivers include es-MX content, WCAG 2.1 AA accessibility, and Core Web Vitals tuning for Telcel mobile. CDMX rates sit above Querétaro and Monterrey because of the talent density. We quote in MXN and USD and give fixed-fee proposals.

CFDI 4.0 (Comprobante Fiscal Digital por Internet, version 4.0) is the mandatory Mexican e-invoicing standard, in force since 2023, that SAT requires for every B2B and most B2C transactions. Any commerce site selling to Mexican buyers must issue a CFDI XML signed through a SAT-authorised PAC provider, attach the receiver's RFC tax ID, declare the SAT product or service catalogue code, and reconcile against the buyer's e-invoicing inbox. We integrate Facturama, SW Sapien, or Diverza as PACs, build the RFC validation flow into checkout, handle credit notes and cancellations under the new approval workflow, and produce the reports SAT can audit. Skipping CFDI compliance means buyers cannot deduct purchases, which kills B2B conversion.

Roughly 40 percent of Mexicans do not hold a bank account, and OXXO cash-voucher checkout is how that segment buys online. We integrate OXXO Pay through Mercado Pago, Conekta, OpenPay, or Stripe México, generating a barcode voucher at checkout that the customer pays in cash at any of more than 21,000 OXXO convenience stores within a 72-hour window. Reconciliation hooks update the order status when OXXO confirms payment to the gateway. We also handle the SPEI instant transfer rail for buyers who have a Mexican bank account but distrust card-not-present, plus CoDi QR for under-MXN $8,000 micropayments. The result is conversion rates that match physical retail rather than excluding half the market.

Yes. The Ley Federal de Protección de Datos Personales en Posesión de los Particulares (LFPDPPP) is Mexico's federal private-sector privacy law, enforced by the INAI. Every site we build for CDMX clients ships with an aviso de privacidad (privacy notice) in both short and integral formats, a consent management flow that captures purpose limitation, and ARCO rights endpoints (Acceso, Rectificación, Cancelación, Oposición) the data subject can invoke with documented response within 20 working days. We log every consent action, build the INAI breach notification path before launch, and handle cross-border transfer documentation when data leaves Mexico. PROFECO consumer complaints flow into the same case management system.

Yes. Mexican Spanish (es-MX) is the largest Spanish-speaking market by volume but uses distinct vocabulary, idioms, and even tax-related terminology compared to es-ES (Spain), es-AR (Argentina), or es-CO (Colombia). We localise content with native CDMX copywriters, not machine translation, declare hreflang es-MX correctly when a site also serves other Latam markets, and tune schema and metadata for Mexican search intent. Mercado Libre and Liverpool win Mexican SERPs partly because their content reads as Mexican, not as Iberian Spanish run through a translator. We also tune for Google.com.mx versus Google.com defaults, handle MXN currency markup in product schema, and align with the Mexican retail calendar (El Buen Fin in November, Día de Reyes in January).

Yes. Llave CDMX is Mexico City's unified digital identity system, allowing residents to access cdmx.gob.mx services with a single account. We integrate Llave CDMX OAuth flows for municipal portals, citizen-facing trámite applications, and B2B platforms that serve CDMX-registered businesses. For higher-trust signing, we integrate e-Firma SAT (the federal digital signature issued by the tax authority) for contract execution, CFDI cancellation approvals, and any document workflow requiring legal weight under NOM-151-SCFI. Both integrations follow the federal Llave MX framework where gob.mx services need cross-portal identity. We document the identity flow in the LFPDPPP privacy notice and INAI registration.

NOM-051-SCFI/SSA1-2010, amended in 2020, requires front-of-pack warning labels (sellos) on Mexican food and beverage packaging exceeding sodium, sugar, calorie, saturated fat, or trans fat thresholds. For e-commerce catalogues selling these products to Mexican buyers, the labels must also appear in the product detail page imagery and structured data. We build catalogue ingestion that flags non-compliant SKUs, render the octagonal warning seals (exceso de sodio, exceso de azúcares, etc.) on PDPs, and prevent under-14 marketing imagery on flagged products as the law requires. COFEPRIS audits e-commerce listings, so getting this wrong creates real regulatory exposure beyond just consumer complaints.

We default to AWS Mexico Local Zone (mex-central-1, launched 2024 near Querétaro) for any LFPDPPP-sensitive workload, giving CDMX clients true in-country data locality for the first time. Azure Mexico Central, also in Querétaro and live since 2023, covers Microsoft-aligned enterprises and government tenants. GCP serves Mexico from Dallas us-south1 with sub-40ms latency, acceptable for non-residency workloads. We document the chosen region in the aviso de privacidad and INAI registration. Cross-border transfers (to AWS us-east-1, for example) require explicit consent under LFPDPPP article 36 and a cross-border data transfer agreement, which we draft as part of the engagement. CFDI invoicing data stays inside Mexico per SAT's implicit expectation.