Ruan Martinelli 
is a freelance developer based in Portugal.
He helps companies bring ideas from zero
to one.
Trusted by early-stage companies and founders
Hi! I'm Ruan, a product-minded developer with over 11 years of experience. I’ve also done plenty of design and product management without ever holding the title.
I build web applications that make sense, look good, and perform well.
As a freelancer, I work with early-stage companies and founders – either building products from scratch, or leveling-up their existing ones. Through experience and pragmatism, I help them move the needle on real business goals.
I’m an expert at React, Next.js, Astro, and Node.js. I have desgined, built, and maintained dozens of applications with these technologies. I often write about them on my blog .
Services
End-to-end app development that fits your business needs. Take an idea from concept to launch.
On-demand technical articles for your product or company blog, written by a human.
"What makes Ruan stand out is that he actually cares about the work he does. He wants each line of code to be his best work. Not in a I'll-take-my-own-sweet-time kind of way. But in a I-want-to-help-the-business-succeed kind of way."
"We fully enjoyed working with Ruan! He is very communicative and proactive, often bringing in his own ideas and he doesn’t shy away from going the extra mile."
Recent posts
See allA Complete Guide to Buffers in Node.js
In Node.js, buffers are a special type of object that can store raw binary data. A buffer represents a chunk of memory...
Getting Started with npm Workspaces
The newest major release of npm, launched in October 2020, came out with a very anticipated feature....
Authentication with Supabase and React
Supabase is an open source managed backend platform. It's a direct alternative Firebase, which is owned by Google...
Deploying to Google Cloud Run with Terraform
Cloud Run is a serverless platform from Google Cloud to deploy and run containers. It's fully managed...