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•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.
Get in touch with us>See process

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.

Spec→Build→Ship

Cooperation process

How does our cooperation look like?

A transparent process that leads from idea to finished product

  1. 01

    Warehouse model

    Dark stores vs hubs, delivery radii, hours and fleet capacity.

  2. 02

    Stock & holds

    Short cart-line locks, TTLs, release on timeout.

  3. 03

    Customer app

    Fast mobile UX with clear “out of range” states.

  4. 04

    Dispatch

    Courier assignment, batching, maps and ETA integrations.

  5. 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.

01

Realtime

Stock signals to apps in milliseconds.

02

Geo inventory

Assortment depends on warehouse distance.

03

Fleet ops

Tools for couriers and dispatchers.

04

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

01
React Native
Mobile
02
Expo
Framework
03
NestJS
Backend
04
PostgreSQL
Database
05
Redis
Realtime
06
WebSocket / SSE
Live

Related

Mobile applications

React Native and Expo for customer and courier apps.

>
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.”
More case studies:Case studies
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.

01Cart line reservation with short TTL
02Product views filtered by geolocation
03React Native apps and ops dashboards
04Instant payment integrations
05Courier assignment algorithms
06Infrastructure 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.

Schedule consultation>Start brief assistant
Contact

Let's talk
about the project.

Have an app idea or need technological support? Write to us — we'll prepare a preliminary analysis and estimate within 48h. Projects that go through our DDT process (Discovery, Design & Technology) come with a price guarantee and a fixed-price agreement — a key differentiator for us.

Write to us[email protected]
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