Hi, I'm Jannik.
I build B2B software around messy business operations: processes people still run by hand, systems that don't talk to each other, documents that should be data. I studied Business and Computer Science; the rest I learned founding and running companies. If you have one of those problems, see Consulting.
AI-based document processing
Product & strategy
A SaaS platform that automates job-bike leasing for bicycle retailers: one unified API in front of 10+ leasing providers, integrated with dealer POS and ERP systems. In production with Fahrrad XXL, one of Germany's largest bike retail groups.
An AI-based document pipeline that turns offers, cost estimates, and invoices into structured, validated data. GDPR-compliant and built for one of Germany's leading bicycle insurance specialists.
Time tracking & vacation management SaaS for small and medium businesses.
IoT smart office solution for shared resource booking and sensor tracking.
GPT-4 T vs. 4o Mini vs. 3.5 T: Which LLM Works Best for Data Mapping?
I take on a couple of advisory conversations a year. If something sounds like a fit, say hello.