Vult Media · Professional work
Enterprise logistics systems
Co-architecting and shipping correctness-critical workflows across a large 3PL platform—from order approvals and warehouse verification to runtime billing rules.
Project record
- TypeScript
- React
- Tailwind CSS
- shadcn/ui
- Express
- ElysiaJS
- TanStack Query
- TanStack Router
- Drizzle ORM
- Better Auth
- SQL
- MongoDB
- RabbitMQ
01 / Ownership
The part I owned
I co-designed backend conventions that still govern the platform, then fully owned several of its hardest modules across product modeling, APIs, UI, database behavior, and test infrastructure.
02 / Engineering decisions
What made the system hold together.
Keep the server authoritative
Warehouse receiving is turn-based and operationally sensitive. Every step revalidates current state on the server rather than accepting the browser's version of reality.
Make billing rules data-driven
Conditional charge formulas and per-client rate-card overrides are evaluated at runtime, keeping complex commercial rules explicit instead of scattering them through application branches.
Build testing as shared infrastructure
Factories, seeders, and orchestrators let multiple domains assemble credible integration scenarios without re-solving setup for every suite.
03 / Outcome
What exists now
The work supports a 100+ employee logistics operation across three warehouses while giving the engineering team shared contracts, safer state transitions, and repeatable integration-test foundations.
Note — Client and product details are intentionally generalized; the engineering scope and metrics are retained.