Direct responsibility
Product direction and technical decisions stay close to delivery. You work directly with the founder.
Good products begin with understanding.
X-Concapps brings product strategy, design, and software development together. For businesses improving the way they work, and partners turning a promising idea into a dependable product. Founder-led from Hamburg, Germany.
Jonah Großhanten
Founder & Managing Director
Jonah Großhanten connects strategic thinking with hands-on engineering. As founder and managing director, he guides products from the first question to everyday use. Delivery is shaped around each project.
Strategy and delivery stay in conversation. You have a direct point of contact for the decisions that shape your product.
- Product strategy and prioritization
- Software architecture and implementation
- Frontend, backend, and mobile development
Our approach
Product and engineering together
We consider the business model, user experience, and architecture together, making decisions that hold up in practice.
Experience from our own products
Building our own products gives us a direct view of development, day-to-day operations, and the decisions in between.
Understanding your workflows
We work through the domain, from property and construction workflows to institutional applications.
From the idea to the application
Strategy, design, and implementation move together. The goal is software that works in everyday use.
What we work on
Businesses & workflows
Custom applications bringing domain-specific processes, communication, and existing systems together.
Products & partnerships
Besides our own products such as Baunario, we have worked with Saarland University on the UdS-App since early 2026.