Websites,
stores and apps
that sell.
Mariano Santini _multimedia designer and web developer
Design and development for brands and agencies since 2012: websites, stores and apps. You imagine it, I make it real.
Since 2012
designing websites and stores
people feel.
In the field of UX design, I have focused especially on eCommerce, websites and conversion-optimized landing pages, overseeing the entire user journey, from first contact to retargeting. I have worked with both WooCommerce on WordPress and Shopify, always seeking to optimize the user experience and improve conversion rates. And when the platform falls short, I build custom: WordPress plugins and Shopify apps that turn each case into a successful project.
From design
to code.
From the first Figma screen to the published app: every detail built so your project feels right and sells more.
Online stores
- Shopify stores
Full renovations and Liquid themes, on Shopify and Shopify Plus.
- WordPress & WooCommerce
Custom sites and stores, from installation to maintenance.
Custom development
- Apps, plugins & themes
Public Shopify apps and custom WordPress plugins and themes.
- Migration & security
From legacy code to WordPress, with no vulnerabilities.
Design & motion
- UX/UI in Figma
Wireframes, interactive prototypes and design systems.
- Motion & 3D
Video editing, 3D animation and motion for the web.
Campaigns & performance
- Landing pages
Pages for digital marketing and social media campaigns.
- SEO & speed
Technical optimization, loading speed and organic traffic.
Building
with AI.
Graduate of the Master in AI Development at BIG school. I now work with coding agents to go from idea to a working product much faster, without giving up architecture or quality.
- Agents that write, test and document the code
- Clickable prototypes to validate before building
- Cloud and local models, whatever the project needs
- I define, review and decide: AI speeds things up, it does not replace judgment
Tools: Claude · Codex · Cursor · Hermes · Ollama · Antigravity
Featured projects
Some of my most outstanding projects in eCommerce and web development
What my clients say
Real testimonials from successful projects that have transformed businesses
“Mariano completely rebuilt our online ordering. We used to rely only on PedidosYa, at a higher cost. Our own ordering system, integrated with WhatsApp, became a great complement to the business. His professionalism and attention to detail are exceptional.”
Frequently
asked questions
What does Mariano Santini do?
I am a multimedia designer and web developer working since 2012, specialized in AI-assisted development. I design and build websites, online stores and apps for clients, brands and agencies, from the first prototype to the published site or app.
Which platforms do you work with?
The platform is never the limit: I adapt to what each project needs. I am also an expert in Shopify and Shopify Plus, WordPress and WooCommerce, Figma for UX/UI, and custom development with HTML, CSS, JavaScript, PHP, React and Liquid.
Do you build apps?
Yes, I build custom apps, as well as Shopify apps and custom plugins and themes for WordPress and WooCommerce.
How do you use AI in development?
I graduated from the Master in AI Development at BIG school. I work with coding agents such as Claude, Codex and Cursor to prototype and build faster, with human review on every delivery.
Do you work with clients in other countries?
Yes, I work remotely with brands and agencies across LATAM: the projects on this site come from Mexico, Colombia and Uruguay, among others.
How do we start a project?
Message me on WhatsApp at +598 97 994 155 or email hola@msantini.com. We talk through the goal, I send a proposal and we get going.
Let's work
together?
I'm available for new projects and collaborations. Let's talk!