Cas Altenburg
Developer
Socials
I'm a software engineer who builds scalable web apps
Automatic trip registration for electric cars. KM Track reads the car's own telemetry, turns it into business, private and commute trips and produces the monthly report the Dutch tax office asks for. Live product with paying customers.
An AI assistant on WhatsApp that turns a voice note or a chat message into a finished quote or invoice. Built for independent professionals and small businesses who do their admin between jobs.
A custom web app for a ventilation contractor that replaces their Excel-and-Word workflow for airflow measurement reports: measure, fill in, click, and the Word report is ready.
Rule-based tidying for files and e-mail in Microsoft 365 and Google Workspace. Write a rule in plain Dutch or English, SortWell marks what matches and asks you about the doubtful cases. Nothing is ever deleted automatically.
My own studio for custom software and AI automation for Dutch small and medium-sized businesses. The website, the proposals and most of the projects on this page come out of it.
In collabaration with a befriend designer we created a website Graduate Entrepreneur. The website is build with Webflow (by me) and the design was made in Figma.
