Web development for professionals
My name is Teunis van Wijngaarden and, through Teuniz.nl, I work on projects where technology matters and quality counts. From compact one-pagers to complex platforms. Clean code, security and performance are my top priorities.
- PHP / MySQLBack-ends, APIs, integrations and working with large datasets.
- Front-end frameworksReact, Vue.js, Next.js and other modern front-end technologies.
- WordPressConfigurations with existing solutions and custom work.
- OptimizationImprovement of loading time, user experience and accessibility.
- Technical maintenanceKeeping installations and custom code compatible and secure.

About Teunis
My name is Teunis van Wijngaarden, and I’m a web developer. I’ve been working on serious web projects for 20 years now, and I thoroughly enjoy it. I do this for communications agencies, knowledge institutions and organisations that want to take a professional approach.
I am interested in the combination of communication and technology. I completed a Master’s degree in Computer Science, with a year dedicated to (scientific) communication. I have worked as a communications officer and as a Functional Application Manager.
I like to be involved from start to finish: from architecture or software selection to implementation and maintenance. I enjoy coding work the most, but of course I make use of existing solutions wherever possible.
In every project, I am part of a team with fellow developers, designers and other communication professionals. I contribute technical expertise and, where requested, provide feedback on others’ work or contribute ideas regarding communication and organisational objectives.
- I enjoy working with:
- VS Code
- Co-Pilot
- Git
- Docker
- PHP
- MySQL
- HTML
- (S)CSS
- React
- Vue.js
- Next.js
- Tailwind
- SVG
- WordPress
- Slack
- GTmetrix
- Lighthouse
Selection of clients:



Artevelde University of Applied SciencesDe makers van de wereld van morgenArtevelde University of Applied Sciences website



Contact
Get in touch
info@teuniz.nl
+31 (0) 251 82 72 74
+31 (0) 6 24 77 90 54 (spoed)

Office
I work remotely from a lovely office in the Het Oude Administratiegebouw business centre in Castricum. There, I have the ideal setup to work efficiently.
Teuniz.nl
Oude Parklaan 119 – kamer 2.05
1901 ZZ Castricum
The Netherlands
Mailing address on request
Zakelijke gegevens
Dutch CoC: 37126826
VAT: NL002119668B51
IBAN: NL86 INGB 0006 1546 74