Backend · FastAPI · PostgreSQL · 2025
Skanda Billing
Multi-tenant billing and credit management backend.
Client type
Backend
Stack
FastAPI · Python · PostgreSQL · SQLAlchemy
Timeline
2025
Outcome
The practice runs complex billing workflows for multiple businesses with a full audit trail.
Case study
Problem
Problem
A small accounting practice processed hundreds of supplier bills a month, half by hand and half by guesswork. Multiple businesses shared one mailbox. Credit limits lived in someone's head.
Solution
Solution
We built a multi-tenant backend that ingests bills via OCR, extracts structured fields, applies tenant-specific credit rules, and produces auditable invoices and reports. Every action is logged. Every tenant is isolated.
Implementation
Implementation
- FastAPI service with strict Pydantic schemas and OpenAPI docs
- PostgreSQL with SQLAlchemy and Alembic migrations
- JWT auth with role-based access control
- OCR pipeline with confidence-scored review queue
- Audit log on every state-changing endpoint
- Reporting endpoints for credit, delivery orders, and proxy invoices
Demo
Demo
>Want one like this?
Outcome
Outcome
The practice runs complex billing workflows for multiple businesses with a full audit trail. OCR plus review cut bill processing from hours to minutes.
Engineering insight
Engineering insight
If you automate document intake, OCR alone is not enough. You need a review UI for low-confidence extractions. Humans correcting the model made the data trustworthy enough to bill on.
Want something like Skanda Billing? Tell us on the intake form and we will scope your version.
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