Web
Fast, responsive websites & web apps.
Waldis Koodeen · available for new work
One senior developer for your website, app and infrastructure.
I design, build and run dependable digital products from A to Z. You work directly with the person writing the code.
25+years building
A→Zone owner
NL · BElocal reach
1:1direct contact
recognize your situation
Which of these sounds like you?
Every business runs into software challenges. Pick the one that sounds familiar — I'll show you exactly how I solve it.
I’m Waldis Koodeen — for 25+ years I’ve built software that actually works. From the first line of code to the running server: web, apps, back-end and infrastructure, under one roof. No middlemen, no noise — you work 1-on-1 with the developer who actually builds and runs it.
Senior Full-stack
& Flutter-developer.
AVAILABLE // FREELANCE \ ZZP
More about me →
what i build
Apps · Flutter
Android & iOS apps in Flutter / Dart.
Back-end & API’s
Robust back-ends, REST APIs & integrations.
Data
MySQL, NoSQL & data analysis.
Infra & hosting
Linux servers, deployment, SSL & email.
Security
Encryption, hardening & ongoing maintenance.
availability
Available
freelance / zzp
1 Sep ’26
start date · indicative
32–40
hours / week
Hybrid
NL · BE · ±60 km
selected work
Voertuigenonline
Online vehicle platform — built, secured & hosted in-house across .com / .nl / .be.
View the case →
SAM Online
Cross-platform sports app, live on App Store & Google Play; Flutter + Firebase/PHP back-end.
Government & industry
Reliable back-end systems & large-scale data processing — from a ministry to Gist-Brocades.
mission & vision
// Mission
With expertise and a passion for ICT we build, improve and optimise systems, processes and standards that make organisations perform more efficiently — correcting flaws, reducing risk and giving people clear information and reliable solutions.
// Vision
To become the trusted technology partner for a select group of SME and government organisations in NL & BE — and, alongside hourly work, to grow my own reusable platforms, specialising in responsible AI integration and security/privacy-by-design.
what clients say
Waldis delivered our platform on time and beyond expectations. His 1-on-1 approach made the process smooth and transparent.
Professional, reliable, and technically excellent. We've worked together for multiple projects now.
The security audit and hardening work gave us peace of mind. Highly recommended for any organization.
Let’s talk
A project, an assignment or just a question? I usually reply within one business day.