NaranjoSolutions
ESEN

Independent software development & consulting

Software that
moves your
business forward.

From your first idea to the software
your business runs on. I build the whole thing.

Explore my work
Ideasproduction

Alonso Villanueva

Senior Software Engineer

Connect with me
Web & applicationsBackend & APIsAutomationCloud & delivery

Selected client work

Built for the
real world.

A closer look at how a business need
becomes a working software system.

Healthcare / Connected systemsPlatform overview

Orthopedic
Spine

A connected clinic platform

Public website

The clinic’s online presence.

Online booking

A connected booking experience.

Admin dashboard

A dedicated administration interface.

Connected by one integrated platformReact / FastAPI / PostgreSQL
Illustrated system overview · Not a product screenshot

Healthcare · Clinic platform

Orthopedic Spine

A public website, online booking, and an admin dashboard—connected through one clinic platform.

  • Public-facing website

    The clinic’s public presence, brought together in a React website.

  • Online booking

    An online booking experience connected to the clinic platform.

  • Admin dashboard

    A separate interface for clinic administration.

  • Backend API & database

    FastAPI services and PostgreSQL persistence connect the interfaces.

React / FastAPI / PostgreSQL

Inside the project

How I can help

The right software.
For your next move.

One part of your system, or the full picture.
From concept through deployment.

Websites & applications

A clear public presence, a new product, or a tool that helps your team get work done. Built around the people who will use it.

React · TypeScript · Vite · Ant Design

  • Business websites
  • Web applications
  • Mobile & cross-platform apps

Backends & integrations

The systems behind the interface. APIs, databases, and authentication that connect your product to the rest of your business.

FastAPI · PostgreSQL · SQLAlchemy · Alembic

  • Backend APIs
  • Database design
  • Authentication & integrations

Automation & custom tools

Turn repetitive work into reliable workflows. Connect services, process data, and give your team purpose-built tools.

Python · Scheduled jobs · API integrations

  • Data processing
  • Scheduled workflows
  • Service integrations

Deployment & infrastructure

Take software from a working build to a running system, with repeatable deployments and infrastructure that can grow with it.

Docker · GitHub Actions · AWS · Terraform

  • Cloud infrastructure
  • Delivery pipelines
  • Containerized applications

The person behind the work

Hello,
I’m Alonso.

Senior Software Engineer

Good software starts
with understanding
what matters.

I’m Alonso Villanueva, a Senior Software Engineer. Naranjo Solutions is my freelance and consulting practice, where I build modern, scalable software for clients—from the first conversation to deployment.

I work across frontend, backend, automation, and infrastructure. That means I can connect the details of an interface with the systems behind it—and help you bring the pieces together.

More about me

Let’s make it happen

A good idea.
A solid next step.

Have a website, a product, or a workflow that needs a better way forward? Let’s talk about what you want to build.

Connect with me

Continue to my personal site
alonsovndev.com