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Grocery Delivery

From fridge‑is‑empty panic to groceries‑at‑your‑door in under 30 minutes—see how our real‑time logistics makeover powers 10 million orders every month for a nationwide same‑day platform.

Industry

On‑Demand Grocery & Last‑Mile Logistics

Service

Product Strategy + Real‑Time Routing Platform + AI Demand Forecasting

Team Setup

1 Product Strategist · 3 UX/UI Designers · 2 Data Scientists · 2 QA Specialists · 8 Full‑Stack Engineers · 4 DevOps

Timeline

12 Months

Story

Goal

Build the fastest, most reliable grocery marketplace in the country—able to:

  • Guarantee delivery windows as tight as 20 minutes for urban cores.
  • Auto‑substitute out‑of‑stock items with >90 % shopper acceptance.
  • Lift average basket size while protecting razor‑thin grocery margins.
  • Scale seamlessly from 4 M to 10 M monthly orders without service degradation.

Challenge

Even with booming demand, the legacy stack strained under volume and complexity:

  • Inventory Blind Spots — store‑level stock updated every 30 min, driving cancellations.
  • Inefficient Routing — static batch dispatch added 11 min to every drop.
  • Substitution Rage — random replacements tanked CSAT to 63 %.
  • Basket Abandonment — shipping fees & delivery uncertainty killed 22 % of carts.
  • Dark‑Store Silos — data fragmentation across micro‑fulfillment hubs.
  • Regulatory Maze — alcohol, age‑gated goods, and regional surcharges.

These frictions threatened growth in a market hurtling toward $640 B globally. wavegrocery.com

Our Approach

01

Discover

Shadowed 60 shoppers + 45 couriers; latency heat‑maps pinpointed every >300 ms slowdown.

02

Design

Prototypes stressed certainty (real‑time ETA), control (substitution rules), and reward (order streak XP).

03

Deploy

Event‑driven, Kafka‑backed micro‑services; blue/green rollouts twice daily with canary stores.

Challange

The Mountain to Climb

These frictions threatened growth in a highly competitive space:

01

Inventory Blind Spots

4.8 % of SKUs showed phantom stock—leading to last‑minute cancellations.

02

Routing Lag

Drivers averaged 2.1 km of dead‑heading per order.

03

Substitution Rage

CSAT dipped below grocery benchmark 70 % when items were swapped randomly.

04

Basket Abandonment

Delivery‑fee shock above $7 stalled growth and killed 22 % of potential checkouts.

05

Data Silos

5 separate systems across dark‑store, in‑store & partner POS led to fragmentation.

06

Compliance Pressure

Alcohol checks averaged 90 s curbside, adding friction to the final step.

Additional Hurdles

Narrow freezer capacity complicated order stacking and wave picking.

Surge‑pricing backlash from customers—perceived as “gouging.”

Rising fuel costs squeezed margins further, requiring real‑time route optimization.

Addressing these challenges demanded a holistic solution—data, tech, and operational synergy.

Key Modules Engineered

Each module targeted a specific friction point—integrated into one seamless platform.

Real‑Time Stock Sync

15‑sec updates from POS, scale sensors & computer‑vision shelf cameras.

Dynamic Routing Engine

Reinforcement‑learning dispatch cuts driver idle –17 %.

Smart Substitutions

Preference‑ranked replacements with photo confirmation; acceptance 93 %.

Delivery ETA 2.0

Live driver telemetry → ±90‑sec accuracy, boosts checkout trust.

Order‑Fee Optimiser

Sliding fee model nudges baskets $8 higher on avg.

Dark‑Store OS

Wave picking & slotting algorithm lifts units‑per‑picker 28 %.

Driver Super‑App

Gamified missions; turnover down 19 %.

AI Demand Forecast

Daily SKU demand MAPE < 6 %; waste costs –12 %.

Carbon Route Scorer

Chooses EVs/bike couriers when emissions savings >15 %.

Loyalty Streaks

5‑order streak unlocks free delivery—orders per user +21 %.

User Research Insights

“Late updates kill me—I only find out it’s out‑of‑stock at the door.”

71 % of shoppers would pay $1.50 more for a <30‑min guaranteed slot.

Couriers prioritize predictable batch density over higher pay‑per‑drop.

Households with kids make 2.8 × more weekly orders than singles. Wynshop.com

Technology Stack

Front‑end
React NativeNext.jsTailwind CSSExpo OTA
Real‑Time Core
Node + Go servicesgRPCApache KafkaRedis Streams
AI/ML
PyTorch forecastingXGBoost dispatch scoring
Data
Postgres 13BigQuerydbtLooker
Cloud & DevOps
GCP GKECloud RunArgoCDIstio
Compliance
SOC 2 Type IIPCI‑DSSGDPRstate alcohol regs

A/B - Test Wins

Live ETA vs static range
Lift: +9 % checkout conversionSample: 320 K sessions100 % roll‑out
Photo‑verified substitutions
Lift: −43 % “reject item” clicksSample: 180 K orders100 %
“Fast‑Pass” $7.99 monthly sub
Lift: +31 % order frequencySample: 90 K users75 % rollout

ROI / Business Impact

Payback in 6 months
Ops savings covered the entire rebuild cost.
Average basket +$8.30
Gross margin +3.4 pp despite competitive pricing.
On‑time delivery 96 %
Up from 83 %—driving higher loyalty & word‑of‑mouth.
Waste costs −12 %
AI forecasting drastically reduced spoilage.

Outcome

A year later, the platform orchestrates 10 million monthly orders—without buckling.

Revenue & Growth

  • Orders up 2.6 × (4 M → 10 M per month).
  • Annual GMV +$2.1 B with zero extra marketing spend.

Customer Experience

  • CSAT 95 % · NPS +38—industry‑leading.
  • Refund claims −41 %; substitution acceptance 93 %.

Operational Efficiency

  • Picker UPH +28 %; courier idle –17 %.
  • 24h code‑to‑prod cycle, 99.99 % API uptime.

Market & Brand Impact

  • Expanded from 12 to 30 metro areas in 10 months.
  • Featured by TechCrunch as “Fastest Grocery App 2025”.

Feature Highlights

1

Real‑Time Stock Sync

zero phantom inventory
Certainty
2

Dynamic Routing Engine

shorter miles, faster drops
Speed
3

Smart Substitutions

shopper‑approved swaps
Control
4

Delivery ETA 2.0

±90 s accuracy
Trust
5

Order‑Fee Optimiser

bigger baskets, happy CFO
Margin
6

Dark‑Store OS

wave picking super‑charged
Efficiency
7

Driver Super‑App

gamified retention
Engagement
8

AI Demand Forecast

less spoilage, fuller shelves
Sustainability
9

Carbon Route Scorer

greener deliveries
Eco‑Friendly
10

Loyalty Streaks

habit‑building rewards
Retention
11

Voice‑Add to Cart

Alexa/Assistant integration
Convenience
12

Smart Tips

ML nudges lift courier earnings 12 %
Fairness
13

Bulk Buy Bundles

wholesale pricing on staples
Value
14

Instant Re‑Order

1‑tap “last basket” repeat
Simplicity
15

GPT‑4 Pantry Chat

recipe‑aware cart suggestions
Personalisation

Ready to turn speed and certainty into market share?

Book a discovery call—we’ll map the exact levers to boost order volume, slash cancellations and delight shoppers, couriers, and CFOs alike.

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