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Omnichannel POS — Unified CX

Swipe, tap, or scan anywhere—our next‑gen POS knits every channel into a single conversation, giving shoppers a “buy, collect, return, repeat” freedom that lifts loyalty and lets store teams move at e‑commerce speed.

Industry

Specialty & Big‑Box Retail · Unified Commerce

Service

Product Strategy · Cloud‑Native POS Platform · Store Mobility · Data Unification

Team Setup

1 Product Strategist · 2 Retail Solution Architects · 3 UX/UI Designers · 2 Data Scientists · 2 QA Specialists · 9 Full‑Stack Engineers · 4 DevOps

Timeline

10 Months

Story

Goal

Build a single POS brain that would:

  • Let customers start a cart online, finish in store—or vice‑versa—without friction.
  • Surface real‑time inventory across 750 stores + DCs with ≥ 98 % accuracy.
  • Cut checkout time to ≤ 15 seconds for contactless payments.
  • Boost CLTV and AOV through seamless loyalty, endless‑aisle, and curbside flows.

Challenge

Fragmented legacy tills and e‑commerce engines meant data silos and clunky experiences:

  • Disjointed carts: online and store orders sat in separate systems.
  • Inventory mismatches: 6 % “ghost stock” caused cancellations and shelf gaps.
  • Slow tills: card‑present checkout averaged 48 s; queues hit CSAT.
  • Returns chaos: store staff needed three tools to process omni‑returns.
  • Loyalty blind spots: points earned online failed to surface at POS.
  • Compliance maze: PCI v4, GDPR, and state‑level tax rules.

Our Approach

01

Discover

Shadowed associates in five countries; mapped 54 customer touchpoints & 27 POS pain nodes.

02

Design

Prototyped a “unified cart” API, tablet‑first UI, and self‑checkout flows; validated with 40 store pilots.

03

Deploy

Cloud‑edge micro‑services (GCP + Cloud Spanner) roll out nightly; zero‑downtime blue/green cut‑overs.

Challange

The Mountain to Climb

A half‑century of fragmented retail tech demanded a unified approach:

01

Online ↔ store cart sync

Had to settle in < 300 ms to maintain a real‑time cross‑channel experience.

02

20‑year COBOL till logic

Hidden in black‑box DLLs with minimal documentation.

03

Promo stack

4 000 overlapping price rules created discount complexity.

04

EMV & digital wallet support

6 card networks in 14 regions—one integrated solution.

05

Data lake ingestion

700 M historical receipts for AI suggestions and reporting.

Additional Hurdles

Edge caching had to keep offline transactions for up to 30 min of WAN outage.

Nightly store updates—4 000 promos, price changes, and compliance patches.

Enforcing PCI v4 & GDPR across a multi‑country store footprint.

Solving these challenges meant rewriting decades of retail assumptions into one modern, cloud‑native infrastructure.

Key Modules Engineered

Designed to unify commerce, slash queue times, and empower staff—no matter the channel.

Unified Cart API

Real‑time merge of web, app & in‑store baskets.

Mobile POS

iOS/Android app turns any associate into a queue‑buster.

Endless Aisle Lookup

Ship‑to‑home from DC if shelf is bare.

Real‑Time Inventory Sync

Event‑driven updates every 5 s; accuracy 98 %.

Omni‑Returns Portal

Buy anywhere, return anywhere in < 60 s.

Clienteling Tablet

360° shopper profile + AI “next best product.”

Self‑Checkout Kiosk

Vision‑based loss‑prevention; shrink down 12 %.

Digital Receipts & Wallets

EMV, Apple Pay, Google Pay, PayPal across all lanes.

Promotion Brain

Graph rules engine resolves stackable offers in 12 ms.

Store Ops Dashboard

Live KPI tiles (UPT, queue length, labor heat‑map).

Compliance Vault

Tokenised PAN, PCI v4 ready; GDPR purge API.

Edge‑Caching Engine

Keeps checkout live 30 min during WAN outages.

User Research Insights

Unified shoppers (web + store) spend 14 % more per order and show 11 % higher lifetime value. LinkedIn

Queue abandonment spikes after 75 seconds; mobile POS cuts wait to 18 seconds.

68 % of returns are cross‑channel; one‑tap omni‑return lifts CSAT by 9 pts.

Technology Stack

Front‑end
React Native (associate & kiosk apps)Next.js web tills
Core
Node + Go micro‑servicesgRPCApache KafkaRedis Streams
Data
Cloud SpannerBigQuerydbtLooker
Payments
Adyen Unified CommerceEMV L3 kernelsP2PE
Infra
GCP GKE AutopilotCloud RunTerraformArgoCD
Security & Compliance
PCI‑DSS v4GDPRSOC 2 Type II

A/B - Test Wins

Unified cart vs split
Lift: +15 % checkout conversionSample: 210 K sessions100 %
Associate mobile POS vs legacy till
Lift: –34 s avg queue timeSample: 150 K transactions80 % rollout
One‑tap omni‑return vs manual
Lift: +11 pts CSATSample: 60 K returns100 %

ROI / Business Impact

Payback in 9 months
Labor savings + uplift offset the full build cost.
AOV +14 %, CLTV +11 %
Unified commerce launch drove higher basket sizes.
Shrinkage −12 %
Real‑time inventory & kiosk vision checks cut losses.
Checkout speed 15 s
Queue abandonment −29 %.

Outcome

One platform. One cart. One brand experience across web, store, and curbside.

Revenue & Growth

  • Store & online GMV +19 % YoY with same marketing spend.
  • Omni‑channel customers now 46 % of base (was 28 %).

Customer Experience

  • CSAT 94 % · NPS +30—highest since 2019.
  • 97 % of SKUs show accurate stock online vs 88 % baseline.

Operational Efficiency

  • Associate productivity +22 % (UPT metric).
  • 24×7 zero‑downtime releases; 99.995 % POS uptime.

Brand Impact

  • Featured by Retail Dive as “Top 5 Unified Commerce Rollouts 2025.”
  • Benchmark study cites client among 5 % retailers reaching unified‑commerce maturity. LinkedIn

Feature Highlights

1

Unified Cart API

shop & finish anywhere
Omni Freedom
2

Mobile POS

queue‑busting freedom
Speed
3

Endless Aisle

never lose a sale
Availability
4

Omni‑Returns

buy/return anywhere
Convenience
5

Real‑Time Inventory

zero ghost stock
Accuracy
6

Clienteling Tablet

AI next‑best offer
Personalization
7

Promotion Brain

stack rules in 12 ms
Efficiency
8

Self‑Checkout Vision

shrink‑smart kiosks
Security
9

Edge‑Caching

POS stays live offline
Resilience
10

Compliance Vault

sleep‑easy security
Trust
11

Store Ops Dashboard

live KPI heat‑map
Insights
12

Digital Receipts & Wallets

paper‑free ease
Sustainability
13

Loyalty Unlocked

points sync instant
Retention
14

Curbside Scheduler

BOPIS in 45 min
Flexibility
15

Fraud Sentinel

ML card & return guard
Risk Reduction

Ready to stitch every channel into one seamless checkout?

Book a discovery session—we’ll show how a cloud‑native POS can lift revenue, slash queues, and delight customers from web to curbside to till.

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