Fintech
Controlling
.NET
Financial controlling SaaS
“From the very beginning, I received excellent guidance, and the solution concept became the perfect blueprint for our collaboration.”
Elke Limmer,
Managing Director, Zahlwerk GmbH
Case Study
Financial controlling SaaS
“From the very beginning, I received excellent guidance, and the solution concept became the perfect blueprint for our collaboration.”
Elke Limmer,
Managing Director, Zahlwerk GmbH
01
Challenge
A comprehensive Excel/VBA-based controlling tool had reached its limits. The solution was powerful but not scalable, difficult to maintain and not suitable as a SaaS product. To turn it into a viable business, it needed to become a modern, scalable web application.
02
Our work
- Defined the tech strategy and solution concept
- Designed and built a multi-tenant SaaS platform in .NET
- Integrated accounting data sources (e.g. DATEV)
- Implemented financial visualization, P&L and liquidity planning
- Embedded an AI assistant to support financial planning and user guidance
- Joined as venture partner with shared risk and long-term commitment
03
Impact
- Launched a scalable SaaS product replacing spreadsheet-based workflows
- Improved financial transparency and planning clarity for users
- 100+ paying users
- Foundation for recurring revenue and scalable expansion
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