Product • Customer • Business Intelligence

Data that leads to better decisions.

Product & Customer Data Analyst

I use SQL, Power BI, Python and Microsoft Fabric to help organisations understand customer behaviour, improve retention and make stronger commercial and operational decisions.

Portrait of Chukwujekwu Joseph Ezema
4+ yearsAnalytics experience
2 sectorsGaming and financial services
MSc DistinctionData Science
Microsoft certifiedPower BI Data Analyst
Selected work

Case studies built around business decisions

My portfolio focuses on the questions analysts face in practice: who is at risk, what should be prioritised, whether an intervention created genuine value, and how leaders should act on the evidence.

COMPLETED FLAGSHIP CASE STUDY

A/B Testing & Incremental Revenue

Evaluated a 64,000-customer randomised email experiment, identified the strongest treatment, translated causal spend lift into contribution profit, and rejected personalised targeting when held-out uplift was too uncertain for deployment.

ExperimentationPythonPower BIStatisticsCommercial analytics
SIMULATED BUSINESS CASE

Customer Churn, Retention & Value Prioritisation

Built an end-to-end SQL, Python and Power BI workflow to identify churn risk, examine retention patterns and prioritise customer groups by risk and potential value.

ChurnCohortsSQLPythonPower BI
IN DEVELOPMENT

E-commerce Funnel & Revenue Analytics

An event-level GA4 and BigQuery analysis designed to identify funnel leakage, conversion differences and product opportunities across channels and devices.

BigQueryFunnelsProduct analytics
Capabilities

Analytics from raw data to decision

Customer & product analytics

Churn, retention, cohorts, segmentation, funnels and behavioural analysis.

Experimentation

A/B testing, confidence intervals, power, guardrails and incremental value.

Business intelligence

Power BI, DAX, semantic models and executive reporting.

Analytics engineering

SQL, Microsoft Fabric, ETL, dimensional modelling and data quality.

Applied analytics

Python, statistical modelling, model evaluation and explainability.

Commercial decision support

Revenue, cost, budget, risk and operational performance analysis.

Experience

Professional work across gaming and financial services

Data Analyst — Ubisoft Reflections

Newcastle upon Tyne, UK · October 2022–May 2025
  • Built analytics solutions across recruitment, finance and studio operations using Oracle SQL, Power BI and Microsoft Fabric.
  • Consolidated large operational datasets into reusable reporting and pipeline workflows, improving access to trusted performance information.
  • Partnered with finance, user research and operational stakeholders to translate business questions into measurable reporting and decision support.

Data Analyst & Credit Analyst — Page Financials

Lagos, Nigeria · January 2020–January 2022
  • Analysed corporate accounts, repayment behaviour and credit documentation to support lending and portfolio decisions.
  • Automated recurring repayment and transaction processes using Excel and VBA, reducing manual handling and customer-service issues.
  • Combined financial analysis with customer and operational insight across consumer and business lending.
About

I connect analytical depth with commercial context.

I am a UK-based data analyst with more than four years of experience turning complex operational, customer and financial data into practical business decisions.

My background spans gaming and financial services, where I have worked with SQL, Power BI, Python and Microsoft Fabric to automate reporting, integrate large datasets and support stakeholders with trusted performance information.

I am particularly interested in why customers leave, what improves retention, whether an experiment created genuine incremental value, and how analytical findings should influence commercial decisions.

I hold an MSc in Data Science with Distinction and Microsoft Power BI certification. I have also supported people moving into analytics through training and community content.

Core toolkit

SQLPower BIDAXPythonMicrosoft FabricData modellingA/B testingCustomer analyticsData qualityStakeholder communication

Based in

Newcastle upon Tyne, United Kingdom

Target roles

Product Analyst · Customer Insights Analyst · Data Analyst · BI Analyst · Commercial Data Analyst