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Project case study

Retail adjacency and store-flow analytics

Reusable retail analytics product for cross-shopping, category adjacency, and store-flow decisions.

Helped retail teams move from isolated category views to placement and assortment decisions associated with up to 20% sales-growth impact.

Spark Python Power BI Airflow

Context

The problem

Retail stakeholders needed a repeatable way to understand how customers moved across departments and categories, then convert that signal into placement, adjacency, and assortment decisions.

The work covered customer priority assortment, cross-shopping behavior, category adjacency, and store-flow style outputs so planning teams could reason about placement, assortment, and category optimization across retail contexts.

System trace

How the work moved through the system

A high-level operating path: where the request starts, how the system shapes it, and how other teams consume the result.

  1. 1

    Spark and Python prepared large retail transaction datasets for repeatable cross-shopping analysis.

  2. 2

    Reusable data preparation separated raw transaction work from analytical segmentation.

  3. 3

    Aisle-flow and store-flow style outputs supported placement, adjacency, and category optimization conversations.

Analysis scope

Cross-category

Modeled relationships across departments, categories, and products rather than a single isolated product view.

Commercial signal

Up to 20% sales growth

Retail optimization work was associated with up to 20% sales growth through better placement and category decisions.

Reuse pattern

Segmented

Designed the analysis so multiple customer segmentation approaches could reuse the same prepared data foundations.

Architecture

System shape

4
  1. 1 Spark and Python prepared large retail transaction datasets for repeatable cross-shopping analysis.
  2. 2 Reusable data preparation separated raw transaction work from analytical segmentation.
  3. 3 Aisle-flow and store-flow style outputs supported placement, adjacency, and category optimization conversations.
  4. 4 Power BI surfaced the output in a format business teams could inspect and compare.

Ownership

What I handled

3
  1. 1 Translated retail analysis needs into repeatable data processing and reporting workflows for cross-shopping, adjacency, and store-flow questions.
  2. 2 Built reusable preparation logic so segmentation variants could share common foundations.
  3. 3 Worked across data science and platform concerns so the output could be run repeatedly at scale.

Lessons

What carried forward

2
  1. 1 Retail analytics products need strong data preparation before the statistical layer can be trusted.
  2. 2 Reusable analytical foundations matter when similar questions appear across many clients and categories.

Engineering decisions

Separate reusable preparation from analysis variants

The work was structured so segmentation methods could evolve without rebuilding the base transaction preparation each time.

Make the output business-readable

The final shape prioritized comparison and exploration so retail users could reason about cross-shopping behavior directly.

What can be shown

Public evidence without internal names

The internal systems stay private. This section keeps the public parts: my role, system boundaries, technology context, scale, decisions, constraints, and what I learned.

Internal enterprise system High-level architecture Scale signal

Analysis scope

Cross-category

This case study shares the department, category, and product relationship pattern, not client data.

Business impact

Up to 20% sales growth

Retail optimization work was associated with up to 20% sales growth through placement and category decisions.

Architecture shape

  • Retail transaction data is prepared in Spark and Python processing flows.
  • Reusable preparation layers support multiple segmentation and comparison variants.
  • Power BI presents cross-shopping output for business review.

Responsibilities

  • Built reusable data preparation for cross-shopping, adjacency, aisle-flow, and store-flow analysis.
  • Connected data science needs with platform-ready repeatable workflows.
  • Protected client, shopper, and commercial details in site descriptions.

Constraints

  • Client names, shopper-level data, commercial rules, and segmentation definitions are confidential.
  • Site notes use generalized retail taxonomy language.

Supporting context

High-level architecture

High-level retail analytics shape

Can be shown as transaction preparation, segmentation variants, relationship outputs, and BI consumption.

Scale signal

Reusable analysis signal

The case study can state cross-category and segmented reuse patterns without publishing client metrics.

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