Fabián Martínez

Full-Stack DeveloperMaldonado, Uruguay

I design, build and ship web and mobile apps, from the interface to the database. Over 9 years creating digital products, with the eye of someone who comes from graphic design.

Get in touch See projects

On the frontend I work with React, Next.js and React Native. On the backend, with Python (Django and Flask), Node.js, PostgreSQL and Supabase. I deploy on platforms like Vercel and Cloudflare.

I have built AI-powered SaaS platforms, real-time systems, payments, secure authentication, admin dashboards, reporting tools and automated workflows, including HIPAA-aligned architectures.

My graphic design background is what sets me apart. I treat every screen as a design piece, with clear hierarchy, good typography and a focus on the people using it.

I work independently or in agile teams, with clean architecture, maintainable code, security and clear communication.

How I work

Strategy
I think about products end to end, from the idea to deployment. I want to bring that view to collaborative, technical teams that care about innovation.
Professionalism
Years of freelance work gave me autonomy, ownership and a focus on results. I deliver scalable, secure and well-finished solutions.
Creativity
I solve complex problems by combining analytical thinking with design, to build experiences that are useful, modern and easy to use.

Custom code

Development projects

Web apps and sites I coded end to end, from the data model to the interface.

Hera Diamonds
B2B wholesale diamond platform
Wholesale platform for jewelers, with a catalog synced from the supplier's API and real-time stock checks. The cart reserves stock, payments run through Mercado Pago Checkout Pro with signed webhooks, and unpaid orders cancel automatically. It includes a configurable margin engine, a 360° gem viewer, row-level security (RLS) roles, an admin dashboard with analytics and embeddable catalog widgets. Runs on Cloudflare Workers, with 37 SQL migrations and scheduled syncing.
- React 19
- Next.js 16
- TypeScript
- Supabase
- PostgreSQL
- Tailwind CSS v4
- Mercado Pago
- Resend
- Cloudflare Workers
- See Hera Diamonds live (opens in a new tab)
QR FreeGen
QR code generation SaaS
Freemium QR code SaaS. On the free plan, static codes are generated entirely in the browser, with no signup and no data sent to a server. The Pro plan adds editable dynamic codes, scan analytics, bulk generation from CSV, custom logos, folders and reusable style templates.
- Next.js 16
- React 19
- TypeScript
- Supabase
- PostgreSQL
- Stripe
- Tailwind CSS
- Vercel
- See QR FreeGen live (opens in a new tab)
- QR FreeGen source code on GitHub (opens in a new tab)
RegalBid
Real-time auction mobile app
Cross-platform penny auction app for iOS, Android and web. Bids update live over WebSockets, with anti-sniping logic and a virtual coin wallet backed by an immutable ledger. Critical business logic runs in PostgreSQL RPC functions to guarantee integrity, with RLS policies, image compression and automatic rollback. Includes an admin panel with audit logs and 23 SQL migrations.
- React Native
- Expo
- TypeScript
- Supabase
- PostgreSQL
- Realtime
- NativeWind
- EAS Build
- See RegalBid live (opens in a new tab)
DevOrganizer
AI project planning SaaS
SaaS that turns a project idea into a work plan using generative AI. It suggests the stack, drafts technical questions by category, breaks down tasks and estimates time. It has Google, GitHub or email login, freemium Stripe subscriptions, daily notes with images, a calendar and AI-generated weekly summaries. Tasks export to ClickUp and Linear. About 6,000 lines of Python across 8 services and 81 HTTP routes.
- Python
- Flask
- Redis
- Groq API
- LLaMA 3.3 70B
- Stripe
- Cloudinary
- OAuth 2.0
- See DevOrganizer live (opens in a new tab)
- DevOrganizer source code on GitHub (opens in a new tab)
ClearView
AI-powered consultant matching
SaaS that matches consultants with job opportunities using AI. It analyzes resumes and job descriptions with GPT-4o and returns a compatibility score with an explanation. It includes role-based access with OpenID Connect, PDF and Word parsing, messaging, an admin analytics dashboard and input-hash caching to cut AI calls. It also adds CSRF protection, rate limiting and cloud storage.
- React 18
- TypeScript
- Node.js
- Express
- PostgreSQL
- OpenAI GPT-4o
- Zod
- TanStack Query
- shadcn/ui
- Tailwind CSS
- See ClearView live (opens in a new tab)

More projects

Veterinaria App
Veterinary management with Django
Platform for a veterinary clinic with appointment booking synced to Google Calendar, a shop with a cart and payments through Stripe or PayPal. It has custom ID-based login, admin panels for users, products and suppliers, automated PDF reports and SMS notifications with Twilio. Deployed serverless on Vercel.
- Python
- Django 4.2
- PostgreSQL
- Stripe
- PayPal
- Google Calendar API
- Twilio
- Vercel
Clinic App
Medical appointments with Django REST
Medical appointment system with an MVT architecture and an internal REST API. Email login with patient and doctor roles, availability calculated by weekday, same-day booking restrictions, an approval flow and inline profile editing. Multi-environment config, static files with WhiteNoise and deployment on Vercel.
- Python
- Django 4.2
- PostgreSQL
- JavaScript
- Bootstrap
- Gunicorn
- Vercel

Skills

Frontend
- React
- Next.js
- React Native
- TypeScript
- Tailwind CSS
- HTML/CSS
Backend
- Python
- Django
- Flask
- Node.js
- REST APIs
Database & Infra
- PostgreSQL
- Supabase
- Docker
- Vercel
- Cloudflare
- AWS
- Azure
AI & Automation
- AI API integrations
- n8n
- Claude Code
Design
- Photoshop
- Illustrator
- After Effects
- 3ds Max

Education and certificates

I started as a freelancer in graphic design, 3D and WordPress, and from there moved fully into software development.

I completed Harvard's CS50 Web Programming with Python and JavaScript, building six projects from scratch, including a social network and an e-commerce platform.

I then went deeper into Python (Flask, Pandas and API integration) and took a JavaScript and React bootcamp that simulated a real work environment.

I keep learning constantly, and my projects are documented on GitHub.