Do you build in Spanish and English?

Yes — properly. That means locale routing, hreflang, translated metadata and market-specific content models, not a translation widget bolted onto an English site.

You do. We deliver into your repository and your hosting, with documentation, so you are never hostage to the agency that built it.

Full-stack capability

Web & App Development

A full-stack product team inside your marketing partner.

Solves forA conversion problem that no amount of media spend can fix.

Marketing agencies hand you a strategy and a ticket queue. SLVEX ships the code. Our full-stack team builds marketing sites, ecommerce storefronts, web applications and mobile apps — and because they sit beside the media buyers and SEO leads, the landing page, the tracking layer and the campaign are designed together instead of negotiated afterwards.

That structure removes the single most expensive delay in digital marketing: waiting on someone else's developer to implement the change that unlocks the channel. Tracking gaps, page speed, checkout friction and localisation all get fixed by the same organisation accountable for the results.

What we deliver

Web & App Development

Marketing sites & landing systems

Fast, accessible, SEO-ready builds in Next.js, WordPress or Webflow with a component system your team can extend.

Ecommerce & Shopify

Storefront builds, theme development, multi-market catalogues and WordPress-to-Shopify migrations executed without losing search equity.

Web applications

Customer portals, booking systems, dashboards and internal tools built on modern TypeScript stacks with real authentication and real testing.

Mobile applications

Cross-platform iOS and Android builds, from MVP through store submission and iteration.

Tracking & data infrastructure

Server-side tagging, consent management, CRM and warehouse integrations so the numbers everyone argues about finally agree.

Conversion rate optimisation

Structured experimentation on the pages that carry your media spend, with results fed straight back into campaign strategy.

Selected outcomes

platforms consolidated during a live multi-market migration

market sites maintained from one component system

external dev dependencies between strategy and launch

Frequently asked questions

Usually, yes. We audit first and only recommend a rebuild when the current stack is structurally capping conversion or search performance. Most engagements start with targeted fixes to speed, tracking and template structure.