People lose confidence in financial tools when the data model is hidden behind dashboards that are difficult to inspect or explain.
The approach
- Model domain concepts explicitly instead of leaking database tables into the UI.
- Use server-side validation and typed boundaries across the stack.
- Design the primary flows around decisions, not around charts.
Architecture
Web app → API layer → Domain services → PostgreSQL → Object storage
Web app → API layer → Domain services → PostgreSQL → Object storage
What this makes possible
- Clearer workflows
- Typed boundaries
- Reliable data