Budget: 15000 USD Deadline: 15 days
Hi Yuto,
This is exactly the kind of marketplace architecture I’m strong at: not just building screens or endpoints, but structuring the core flows so a B2B platform remains reliable when catalogs, vendors, orders, and financial logic all grow at once.
Your brief highlights the parts that actually make a wholesale marketplace hard:
- multi-tenant brand/retailer relationships
- bulk ordering and order lifecycle handling
- pricing, commissions, and payment terms
- inventory consistency across suppliers
- scalable API and database design under concurrent activity
That combination is very different from standard e-commerce, and it needs careful backend thinking around data modeling, service boundaries, and transaction safety.
I can help with systems built around React/Next.js, Nest.js, PostgreSQL, REST APIs, AWS, microservices, and React Native, with special attention to:
- clean marketplace domain architecture
- efficient catalog and filtering structures
- order state management that stays predictable
- payment-related flows without fragile business logic
- performance-minded PostgreSQL design for large inventories and frequent reads/writes
- API design that works cleanly across web and mobile clients
What I particularly understand from your description is that trust and usability are not “extra features” here — they depend directly on backend correctness. Smooth checkout, accurate inventory, clear pricing, and consistent order states are what make a B2B marketplace usable at scale.
If you want, I can review the current architecture or jump into a specific module first — for example catalog, order flow, or financial logic — and provide a focused implementation approach.
🌐 My portfolio with recent cases:
https://mrnko.com
💼 Freelancehunt profile:
Freelancehunt
🤝 I’ll be glad to discuss the details, answer your questions, and suggest the optimal solution for your project.
