Realtime
Stock signals to apps in milliseconds.
Q-commerce
Quick commerce & time-critical ops
Stock, location and courier in the same second as the UI
Quick commerce needs real-time inventory and carts, dark-store geofencing, and courier dispatch—often React Native in the field with NestJS, Redis, and event queues.
Customers see assortments only from warehouses within minutes of travel — so the stack must combine geolocation, live stock and cart reservations before payment settles. Mobile is often React Native / Expo; order and fleet orchestration in NestJS with Redis and event queues. This is extreme time competition — without observability and idempotent APIs, overselling and angry reviews follow quickly.
Realtime
Warehouse, map and cart on one clock
Q-commerce is event synchronisation — refreshing a web page every 30s is not honest here.
Geo as a filter
Users do not see SKUs you cannot deliver on time.
Soft reservation
Short stock holds for decisions — then stock returns to the pool.
Dispatch
Automatic courier assignment with route and capacity constraints.
24/7 ops
Warehouse and support panels — same data as the customer app.
Cooperation process
How does our cooperation look like?
A transparent process that leads from idea to finished product
01
Warehouse model
Dark stores vs hubs, delivery radii, hours and fleet capacity.
02
Stock & holds
Short cart-line locks, TTLs, release on timeout.
03
Customer app
Fast mobile UX with clear “out of range” states.
04
Dispatch
Courier assignment, batching, maps and ETA integrations.
05
Peaks & chaos
Load tests, rate limits, graceful degradation under pressure.
Key benefits
Why choose us?
Business outcomes first—technology is the means, not the end in itself.
Geo inventory
Assortment depends on warehouse distance.
Fleet ops
Tools for couriers and dispatchers.
Monitoring
SLA alerts and order queues.
Questions about this system type
- Why does quick commerce need realtime refresh?
- Because two customers can hold the same SKU in the same second—without reservations and geofencing you risk overselling and ops failures.
- Must the driver app be native?
- We often choose React Native / Expo for one codebase on iOS and Android, with background GPS and camera scanning—aligned with store policies.
- How do you scale courier dispatch?
- Through assignment services with route and capacity constraints, event queues and monitoring—ready for promo spikes.
Content last updated: March 18, 2026
Technologies
What technologies do we use?
Modern tools and proven solutions for the best results
React Native
Mobile
Expo
Framework
NestJS
Backend
PostgreSQL
Database
Redis
Realtime
WebSocket / SSE
Live
Client testimonials
They trusted us and see results.
EMKA S.A.
Sławomir Rdest
Board Advisor, EMKA S.A.
“As long-term clients of GMI Software, we had the pleasure of working with them for several years. GMI Software stood out during the tender process with a refreshing, positive approach and the professionalism of the CEO and team.”
Service scope
What does the service include?
Below is an example scope of work that we adjust to the stage and goals of the project.
Cart line reservation with short TTL
Product views filtered by geolocation
React Native apps and ops dashboards
Instant payment integrations
Courier assignment algorithms
Infrastructure for promo spikes and weekends
Next step
Ready to start?
Schedule a free consultation and learn how we can help with your project. After our DDT process (Discovery, Design & Technology), we offer a price guarantee and a fixed-price agreement.
Let’s discuss your project.
Tell us what you need. We’ll suggest the next step.
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