It is me, Joost Baaij. Nice to meet ya.
Hello, I’m Joost.

Software Engineer

I run Space Babies, a software development company in Amsterdam. I create beautiful, fast and secure internet applications, and have been doing so for more than twenty years.

Get in touch
It is me, Joost Baaij. Nice to meet ya.
A stockphoto with a computer screen and human hands.

About Me

My customers hire me to reach bigger online goals. E-commerce runs uninterrupted, incidents are rare, and I write documentation and tests to keep it that way. I specialize in creating mission-critical applications, such as global e-commerce systems, online streaming storytelling, and cutting-edge websites.

I founded Space Babies in 2000 and have used almost every web technology imaginable. My products routinely handle millions of visitors and are designed to be fast and reliable. I usually handle monitoring and preemptive maintenance as well.

Last but not least, I am recognised being in the top 5% of global Ruby developers on StackOverflow.

Dec 2002 - current
Owner / Managing Director
Space Babies
Mar 2012 - Sep 2020
Founder / CTO
De Digitale Topschool
Mar 2016 - Aug 2020
King nascholing


I can work solo or as team lead/manager. I am an expert in development, security, standards, and operations. I am very experienced building e-commerce systems and custom content management solutions. I enjoy increasing my customer’s value. A full stack developer such as me can complete all aspects of a website: front-end (what you see), back-end (how it works) and operational management.

My Open Source work My Resume


Straal Atelier Val-Meer

Straal Atelier Val-Meer

I created a website for this sandblasting company, plus a 360-degree content strategy which included SEO, Instagram and Google Maps. Fast-loading is a key metric, which is paying off: their profits have increased considerably.


Co-founded and architected Scrollytelling, a successful new business for telling content-rich online stories. Ultimately serving more than 7 million readers.
King nascholing

King nascholing

I architected and built this bespoke mission critical e-commerce website and online courseware. All their business now runs through this property.

De Digitale Topschool

I architected, designed and built the premier Dutch online school for gifted children in primary education, and have handled all maintenance since then.
De Digitale Topschool


Overhoeksplein 2
NL-1031 KS Amsterdam

Latest in my blog The Changelog
Using Netlify Functions in a Hugo website

Enabling Netlify Functions for a Hugo website (this one!) is pretty straightforward. There are a couple gotchas, because the documentation is out-of-date. read more