ES
Available for freelance projects
SaaS & eCommerce Specialist

Carlos

Full Stack Consultant for SaaS Platforms & eCommerce Apps | 🌎 GMT-6

I optimize web and mobile applications to reduce user drop-off and increase your business conversions. I turn complex ideas into scalable platforms that deliver measurable results.

100% Performance & SEO (Lighthouse)
Apps focused on conversions & retention
CI/CD — Frictionless continuous delivery
Niche: SaaS & eCommerce

What I Solve

SaaS Conversion Optimization

I reduce churn on SaaS platforms with strategic UX, optimized onboarding, and top-tier technical performance.

eCommerce Apps That Convert

I build online stores and mobile commerce apps that minimize checkout friction and maximize average order value.

Scalable Backend & Automation

Secure API architecture, optimized relational databases and CI/CD pipelines so your business scales without bottlenecks.

+40%
Average improvement in load speed
-30%
Reduction in bounce rate
100
Lighthouse Score (Perf. & SEO)
4+
SaaS/eCommerce projects delivered

About me

I am a software developer focused on building scalable, fast, and results-oriented web and mobile applications. My work ranges from designing modern and optimized interfaces to database architecture, REST API integration, and cloud services with Supabase.

Web Development & Performance

Creation of web applications with modern architectures (Astro, React, TypeScript), prioritizing loading speed, technical SEO, and clean code.

Backend, APIs & Cloud

Design of relational databases (PostgreSQL, MySQL), secure REST endpoints, and real-time data synchronization.

Mobile Apps & Automation

Development of functional applications with secure authentication and integration of AI models (processing APIs) to solve practical cases.

Location / Modality: Remote (GMT-6)
Availability: Freelance projects and custom development
Philosophy: Performance, accessibility, and automated deployments (CI/CD)

Stack & Skills

Frontend

Astro
React
Svelte / SvelteKit
Tailwind CSS
TypeScript

Backend & APIs

Node.js
REST APIs
PHP

Databases & Cloud

PostgreSQL
MySQL
Supabase
Vercel

Case Studies

MediSaaS

React WebFirebaseFirestoreSaaS

SaaS platform for managing clinical records and workflow for independent medical practices.

Problem:Medical offices managed patient records on paper, causing time loss and registration errors.
Solution:SaaS app with digital records, role-based authentication, and real-time metrics dashboard.
Stack:React, Firebase Auth, Firestore, Hosting.

Demo Access:

Email: carlo@gmail.com

Password: 123456

Aurelia Landing Page

HTML5CSS3JavaScriptConversions

High-conversion landing page for a luxury brand, designed to capture qualified leads.

Problem:The brand had no online presence and was losing potential clients to competitors with stronger digital identities.
Solution:Responsive landing with premium animations, optimized CTAs, and an architecture focused on SEO and conversion.
Stack:HTML5, CSS3 (animations), vanilla JavaScript.

WeatherSphere Dashboard

JavaScriptREST APIsAsync/Await

Real-time weather monitoring dashboard with automatic geolocation and zero dependencies.

Problem:Needed to demonstrate real-time external API integration with an intuitive UI and no heavy dependencies.
Solution:Dashboard that auto-detects location, consumes a weather API, and presents data with clear visualizations.
Stack:JavaScript ES6+, Fetch API, Geolocation API, CSS Grid.

What My Clients Say

“
★★★★★

"Carlos delivered the records management system ahead of schedule. His communication was impeccable throughout the process and the final product exceeded our expectations. I would definitely hire him again."

DR
Dr. Roberto SánchezMedical Director — Private Clinic
“
★★★★★

"We needed a landing page that actually converted visitors into clients. Carlos understood the business, proposed UX improvements we hadn't considered, and the result is a page that looks and performs beautifully."

MR
María RodríguezFounder — Aurelia Brand
“
★★★★★

"What impressed us most was his strategic vision: he didn't just code what we asked for — he identified operational bottlenecks and resolved them proactively. A true technical consultant."

JL
Jorge LópezCEO — Logistics Company

Why Work With Me?

Results-focused

I don't just deliver code — I deliver solutions that move business metrics: conversions, retention, and speed.

Clear communication

Proactive updates, no unnecessary jargon. You'll always know the status of your project.

Punctuality guaranteed

Track record of on-time delivery. If there's a risk, I communicate it before it becomes a problem.

Strategic vision

Beyond building what you ask for, I identify technical opportunities and risks that impact your ROI.

Let's Work Together

Prefer to write directly?

Feel free to send me an email directly to my inbox.

cm7887575@gmail.com