Data & Analytics Specialist

Make More Profit Without Spending More.

I help online store owners and growing businesses improve their tracking, build real-time dashboards, and turn messy data into decisions that grow revenue using GA4, GTM, Python, Looker Studio, Power BI, and SQL.

The call is free and takes 30 minutes. I'll tell you what you need, even if it isn't me.

100 visitors to a store with no funnel tracking
  1. Viewed a product100
  2. Added to cart70
  3. Reached checkout40
  4. Bought20

80 people left without buying. Without tracking, you can't tell which step lost them or why.

Illustrative numbers from my WooCommerce case study below.

Works with Looker Studio Power BI Google Sheets and Excel GA4 Google Tag Manager Shopify and WooCommerce SQL and Python

Why work with me

When sales stop showing up in your reports, most analysts will just tell you the tracking is broken. I go in, find exactly what's causing it and fix it. I spent years as a web developer before I became an analyst, so I can read both the reports and the website behind them.

I don't hand over a dashboard and walk away. I make sure the data going in is clean, the story it tells is accurate, and you know what to do when you look at it.

Based in Johannesburg. Working with clients globally.

UM Usamah Maphumulo — Data & Analytics Specialist

Work you can check

These are self-initiated projects, built on public datasets or a demo store, so you can see how I think before we work together. Each has a full write-up on LinkedIn.

GA4 DebugView showing the full purchase journey
Tracking build, WooCommerce, June 2026

A silent plugin conflict was hiding every purchase from analytics

I built a GA4 and GTM event suite from scratch on a demo store. Along the way I found a checkout plugin that replaced WooCommerce's thank-you page, so no purchase ever reached analytics. Fixing it made the whole journey visible, from product view to purchase.

  • Full journey confirmed in GA4 DebugView with the correct transaction ID, revenue and currency
  • Native WooCommerce analytics switched off, so one system counts every sale
GA4Google Tag ManagerWooCommerceDataLayer
2loos web analytics Looker Studio dashboard

From ad spend to bookings

A 3-page Looker Studio dashboard and stakeholder report for a hypothetical local service business, built on 21,000+ modelled sessions and six months of Google and Meta spend. Cost per lead ranged from R27 to R108 across six campaigns, and 83% of visitors never reached a pricing or booking page.

PythonLooker StudioFunnel analysis
Marketing performance Power BI dashboard

Marketing performance and campaign ROI

A 3-page Power BI dashboard built from 2,240 customer records. It flags 664 customers at risk of churning and shows that heavy website visitors spend less, not more.

PythonPower BIETL
Netflix catalogue Power BI dashboard

Netflix's global catalogue

A Python to MySQL to Power BI pipeline over 8,797 titles. About 67% of TV shows never get a second season, and catalogue growth peaks in Q3.

PythonMySQLPower BI
Executive revenue Power BI dashboard

Global revenue pivot

Five messy CSV files behind a $9.32M-revenue scenario, unified in MySQL and shown in one executive dashboard. Recommendation: protect the balanced channel mix and grow the markets ranked 2 to 4.

PythonMySQLPower BI
Café sales Tableau dashboard

Café sales analysis

Raw point-of-sale transactions turned into a roadmap: peak trading windows, underperforming products and inventory inefficiencies.

PythonSQLTableau

Two kinds of work

Pick the one that matches where your data lives today. We can confirm the right scope together after a free call.

Spreadsheets to dashboards

For small and growing businesses tracking bookings, jobs or sales in spreadsheets, with no clean way to see what's going on.

  • Data audit and cleanup

    Find out what's really in your spreadsheet, and fix it.

  • Business dashboard

    Revenue, jobs and utilisation in one live view instead of four tabs.

  • Automated tracking system

    A capture form that keeps your data clean and flags double-bookings, so the dashboard never goes stale.

Tracking you can trust

For online stores that need GA4 and Google Tag Manager working properly, with a dashboard on top.

  • Analytics audit

    Find out what your GA4 data is, and isn't, telling you.

  • GA4 and GTM tracking setup

    Every step from product view to purchase, tested before handover.

  • Connected store dashboard

    GA4, ads and store data in one view your whole team can open.

Not sure which one you need? Explore services Ask me on a free call

How we'd work together

  1. 1

    Book a free 30-minute call

    We talk through your business, your data and what you actually need. No pitch, no pressure.

  2. 2

    I confirm scope and price in writing

    What I'll do, what I need from you, what it costs and when it's done. No surprises.

  3. 3

    I deliver, you own it

    Everything is documented, so you're never dependent on me to keep using it.

Tell me what you can't see yet

It takes two minutes. I read every message and reply within one business day.

No spam and no hard sell. Just a reply from me.

Message sent

Thanks for reaching out. I'll reply within one business day with next steps.