Bespoke systems & backends
End-to-end builds for your operation: APIs, dashboards, databases and business logic—from discovery to deployment and handover.
I TURN IDEAS INTO DIGITAL SOLUTIONS
E-COMMERCE, WEBSITES AND BESPOKE SYSTEMS!
Technologies I work with
The full potential of the web for the best solution for your project.
GET IN TOUCH
Get in touch to improve your digital presence! Fill in the form and I’ll get back to you soon.
My services
Custom Shopify apps
Private apps and extensions tailored to your store: checkout flows, integrations, admin tools and bespoke features built on Shopify’s APIs.
Custom Shopify themes
Unique storefronts aligned with your brand: Liquid sections, performance-focused themes, and UX that converts.
SEO & discoverability
Technical SEO, structured data, content structure and measurable fixes so search engines and users find you more easily.
Web performance
Core Web Vitals, lazy loading, caching and bundle tuning—faster pages, better UX and stronger conversion.
APIs & integrations
Connect your stack: CRMs, ERPs, payments, webhooks and third-party tools—reliable data flows between systems.
Automation with AI
Smart workflows: product copy, support triage, data enrichment and integrations that save time using modern AI where it fits.
Success stories
Renova Beauty
E-commerce
For Renova Beauty I built an online store that took products nationwide across Brazil; sales rose by over 300%. The intuitive platform improved the shopping experience and the brand’s digital presence.
NeoTech Systems
Business management platform
I built a management platform for NeoTech Systems that automated key tasks, cut errors and improved efficiency by 50%. Their team now works faster and more accurately.
StreamMax
Content streaming app
I rebuilt StreamMax’s infrastructure for high traffic: faster performance and better streaming quality. Subscribers grew by about 70% with higher engagement.
Testimonials
Soremia
Renova Beauty
Renova Beauty’s digital transformation changed our business. We only sold in-store before; with the e-commerce Matheus built at Tontini.dev we reached all of Brazil. Over 300% sales growth and a smooth shopping experience.
Ricardo
VisionTech Solutions
Matheus’s work at Tontini.dev exceeded our expectations. We needed a robust technical solution and he delivered exactly that. The new platform automated internal processes and cut operational costs. Productivity rose by 40% and we now have a solid digital infrastructure.
Camila
Innovate Marketing
We needed to modernise our digital presence, and Matheus at Tontini.dev delivered the perfect solution: a dynamic, responsive site integrated with our processes. Lead conversions rose by 60% and he was always on hand for improvements.