07/17/2025 updated

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Data Analyst | Excel | Power BI | SQL | Insightful Dashboards for Smarter Business Decisions

Lagos, Nigeria
Only remote
Bachelor of Science in Economics
Lagos, Nigeria
Only remote
Bachelor of Science in Economics

Profile attachments

SHARON JOHNSON- Resume.pdf

Data AnalysisAutomationCustomer Relationship ManagementBusiness AnalysisSpreadsheetsDrilling OperationsData ValidationData CleansingData ModelingData QualitySalesProject ManagementProduct Information ManagementVisualizationMicrosoft Power BIScenario TestingSQL DatabasesBusiness StrategiesTracking SystemsSales TrendsDatabase Administration
Data Analysis & Visualization
Advanced Microsoft Excel skills including Power Query, PivotTables, and complex formulas. Power BI expertise in DAX, visualizations, and drill-through analysis.

Database Management
SQL proficiency for data cleaning, joins, aggregations, and filtering to prepare reliable datasets for analysis.

Reporting Automation
Dashboard creation and automation that improved reporting efficiency by 40%, tracking KPIs like sales trends and customer engagement.

Data Cleaning & Validation
Spreadsheet automation, data validation techniques, and lookup functions to ensure data accuracy and consistency.

Business Analytics
Analysis of sales, customer, and product data to generate actionable business insights and data-driven strategies.

Project Management
Experience managing data projects from conception to implementation, including inventory tracking systems and customer churn analysis.

Data Modeling
Creation of data models and What-If analysis to test scenarios and predict outcomes for business decision-making.
 

Experience

Professional experience0 - 5 years
Freelancer since2024

Languages

EnglishFluent

Project history

US-China Trade War Analysis

Project
Created a 4-page Power BI report visualizing trade flows, inflation trends, and tariff events from 2017-2024 using DAX and key visuals to analyze economic impact.

Aviation Performance Analysis

Project
Analyzed airline performance data to uncover trends in flight delays, cancellations, and on-time rates using SQL, Power BI, and Excel.

Customer Churn Analysis

Project
Built a Power BI dashboard to analyze churn patterns and test retention strategies, helping identify high-risk groups and supporting a projected 12% churn reduction.

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