Multi-Tenant Inventory & Operations System
A multi-tenant inventory and order system with a customer portal, role-based workflows, and enforced ownership across internal teams and external users.
Operations ran on spreadsheets and email handoffs with business logic embedded in undocumented Excel formulas. As team size grew, errors increased. When processes failed, no audit trail existed to determine what happened or who was responsible.
Critical state transitions occurred through manual coordination. Incomplete handoffs created downstream failures that surfaced days later in production.
- State machine architecture with explicitly modeled transitions and validation gates
- Each workflow step defines required inputs, validation rules, and authorized roles
- State progression prevented when validation fails or required data is missing
- Admin override pathways for genuine exceptions with mandatory justification and full logging
- Permission system enforcing read/write access at the field level based on user role and current state
- Complete modification log capturing every change with user attribution and timestamp
- Database constraints preventing invalid state combinations at the schema level
- Automated handoff notifications triggered by state transitions
- Role-scoped dashboards showing only relevant records and available actions
State logic is enforced in the backend through database constraints and API-level validation. Users cannot skip required steps or create invalid state combinations—the system architecture prevents it.
Every modification is logged immutably with full attribution. Teams gained complete operational visibility: who changed what, when, and what state it was in at the time.
Permission enforcement at the data layer means users see only records and fields relevant to their role. This reduced errors from users modifying data outside their domain while maintaining complete system transparency for administrators.