Order Management System (OMS) for Omnichannel Operators
An order management system is the single source of truth for every order that enters the business — from your own webshop, marketplaces, B2B portal, phone or retail POS. One queue, one stock pool, one routing logic, and one team that sees everything in real time.
What the OMS does
Multi-channel order capture
Orders from your own webshop, eMAG, OLX, call center, B2B portal and retail POS land in one unified queue with normalized status and structure.
Rule-based order routing
The system picks the warehouse closest to the customer with available stock; split shipments fire automatically when one location cannot cover the full basket.
Real-time inventory allocation
Stock is reserved the moment an order is confirmed and pushed back to every channel in seconds — no more overselling between web, marketplace and store.
Partial fulfillment and backorder
Ship available items immediately while missing ones go out as a second parcel when they arrive — customers do not wait weeks for one product out of ten.
Returns and RMA
Customer portal for return requests, QR carrier label, warehouse check-in and automated refund back to the original payment method.
Customer service tools
One screen per agent — order status, customer history, carrier issues, partial refunds, escalation. No more juggling five tabs.
Who it fits
Omnichannel retailers
Brands with physical stores and online sales that need a unified stock view and ship-from-store when the warehouse runs dry.
Brands on 3+ channels
Selling on your own site, eMAG, OLX and social. The order management system is the glue that prevents selling the same SKU twice.
B2B and B2C operators
Mixed wholesale and retail customers with different pricing, credit limits and SLAs. The OMS keeps both flows without parallel spreadsheets.
How we build it
We do not resell SaaS. We build your own OMS on a proven stack: PostgreSQL for orders and stock movements, Node.js or .NET for business logic and event bus, Next.js for the back-office UI, React Native for warehouse pickers. See how we run custom software development end to end.
We start by mapping your channels, current order flow, warehouse handoffs and mandatory carrier and marketplace integrations. From that map we lock the MVP scope: usually channels plus routing, statuses and one carrier and marketplace integration in phase one.
We integrate with eMAG, Shopify, WooCommerce, OpenCart, Speedy, Econt, GLS, DHL, Sameday and your accounting stack. The OMS sits as middleware between front-end channels and the back office — see also ecommerce development when the project is end to end.
We go live in stages — first the unified queue, then routing and split shipments, then RMA and customer service tools. After go-live we stay on an SLA-backed support contract with reaction times tuned for e-commerce, Black Friday included.
Why Saitami for your order management system
Manual order handling
Average reduction in manual operations per agent four months after go-live — no rekeying between systems, no manual stock lookups.
On-time fulfillment
Smarter routing and split shipments raise the share of orders that reach the customer within the promised window.
Starting investment
Fixed price for the MVP phase. No per-user fees, no GMV percentage. You own the system outright.
The OMS pairs naturally with manufacturing traceability software for make-and-sell brands and with sales management software for B2B and B2C operators.
Frequently Asked Questions
What is the difference between an OMS and an ERP?
An order management system focuses on order orchestration across channels, warehouses and carriers — routing, split shipments, RMA, real-time stock and customer service. An ERP covers a wider perimeter: accounting, finance, manufacturing, HR. In practice the OMS often lives in front of the ERP, feeding it ready-to-invoice orders without duplicating functionality on either side.
How long does an OMS implementation take?
An order management system implementation typically takes between 6 and 12 weeks for the first productive phase. A shop with 1-2 channels and one warehouse goes live in 6 weeks. An omnichannel brand on eMAG, own site, B2B portal, POS and three warehouses needs closer to 10-12 weeks. We ship in stages — never big-bang. Unified queue first, then routing, then RMA.
Does the OMS work with my existing webshop?
The OMS works with almost any existing webshop platform — Shopify, WooCommerce, OpenCart, Magento, PrestaShop, custom Next.js stores. Integration happens through official APIs and webhooks, so the storefront is untouched. The same applies to eMAG, OLX and B2B portals. The site stays the customer-facing layer; the OMS runs operations.
How much does an order management system cost?
An order management system starts from EUR 5,400 for an MVP rollout with 1-2 channels, one warehouse and one carrier. A mid-size omnichannel rollout with eMAG, own site, B2B portal, 2-3 warehouses and full RMA usually lands between EUR 14,000 and EUR 32,000. Pricing is fixed against the agreed scope, paid in milestones, no per-user fees, no revenue share.
Ready for one unified order queue?
Book a 45-minute free consultation. We walk through your channels, warehouses and carriers, demo our order management system live, and leave you with a concrete phase-one plan at a fixed price and timeline.
Book a free consultation →