Case study
Shopibiz
Inventory & sales SaaS for SMBs
Organization-scoped inventory SaaS with products, barcodes, sales, invoices, expenses, subscription plans, RBAC, and affiliate commissions — Django monolith ready for SMB multi-tenancy.
Product overview — full frame
01 — Challenge
The problem we solved
- SMBs juggling stock, sales, and accounting in spreadsheets
- No affordable multi-user inventory with roles
- Need subscription billing and affiliate growth loops
02 — Goals
What success looked like
- Multi-tenant inventory + sales core
- Barcode / QR / PDF invoice tooling
- RBAC for admin, inventory, sales, accountant
- Subscription and commission system
03 — Signals
Capability profile
Measured strengths across delivery, innovation, and operational maturity.
Org-scoped
Tenant model
Stock→Sale→Invoice
Commerce loop
Subs + affiliate
Monetization
Gunicorn/Nginx
Ops readiness
04 — System design
Architecture
Server-rendered multi-tenant monolith
Django + Bootstrap portals with light DRF/AJAX endpoints. Tenancy via Organization and UserRole — no separate SPA required.
- 101
UI
Layer 1 of 4Bootstrap 5Crispy formsHTML portals - 202
Domain
Layer 2 of 4ProductsSalesInvoicesExpenses - 303
Tenancy & billing
Layer 3 of 4OrganizationUserRole RBACSubscriptions - 404
Ops
Layer 4 of 4GunicornNginxCI/CD
05 — Stack
Technology stack
Production tools powering this product — icons for quick recognition.
Python
Django
PostgreSQL
Bootstrap
Nginx
GitHub Actions
06 — Capabilities
Key features
Hierarchical categories and org-scoped SKUs
Sales, invoices, expenses, ledger
Profit prediction and audit log
Subscription plans + bank payment verification
Affiliate ReferenceAccount commissions
07 — Deep dive
Structure & detail
RBAC roles
| Role | Focus |
|---|---|
| super_admin | Platform administration |
| organization_admin | Org settings & users |
| inventory_manager | Products & stock |
| salesperson | Sales & invoices |
| accountant | Expenses & ledger |
08 — Outcomes
Business impact
SMB ops
One system for inventory, sales, and basic finance
Growth
Subscription + referral commissions built-in
Delivery speed
Monolith shipped without over-engineering
Closing note
A practical multi-tenant inventory SaaS that covers the full SMB loop from stock to invoice with roles and billing.
