Chioma Okafor

chioma.okafor@email.com | +234 803 456 7891 | 42 Lekki Gardens Avenue, Lagos | linkedin.com/in/chiomaokafor

PROFESSIONAL SUMMARY

Results-driven Data Analyst with 5+ years of experience leveraging statistical analysis, SQL, and advanced Excel to transform complex datasets into actionable business insights. Proven track record in financial data analysis, auditing processes, and testing data integrity across diverse business functions. Skilled at collaborating with cross-functional teams to drive data-informed decision-making and optimize operational efficiency.

PROFESSIONAL EXPERIENCE

Data Analyst
Zenith Financial Services Ltd | Lagos, Nigeria
March 2022 - Present

- Analyze large-scale financial datasets using SQL and Excel to identify trends, anomalies, and opportunities for cost optimization, resulting in $1.2M annual savings
- Design and implement statistical models to forecast quarterly revenue with 94% accuracy, supporting strategic planning initiatives
- Conduct comprehensive data audits to ensure compliance with regulatory standards and maintain data integrity across enterprise systems
- Collaborate with finance and operations teams to develop automated reporting dashboards, reducing manual reporting time by 60%
- Lead testing protocols for new data pipelines and ETL processes, ensuring accuracy and reliability of business-critical information
- Present complex analytical findings to senior leadership through clear visualizations and executive summaries

Junior Data Analyst
Prosperity Analytics Group | Abuja, Nigeria
June 2019 - February 2022

- Performed statistical analysis on customer behavior data to support marketing campaign optimization, improving conversion rates by 23%
- Developed Excel-based financial models and forecasting tools for budget planning and variance analysis
- Executed data quality testing procedures and documented findings to maintain high standards of data accuracy
- Assisted in auditing financial records and reconciling discrepancies across multiple data sources
- Created ad-hoc reports and visualizations using Excel pivot tables, charts, and conditional formatting
- Supported cross-departmental projects requiring data extraction, transformation, and analysis

Data Assistant
Insight Business Solutions | Lagos, Nigeria
August 2017 - May 2019

- Maintained and updated databases using SQL queries to ensure data accuracy and accessibility
- Performed routine data entry, validation, and quality checks on financial and operational datasets
- Assisted senior analysts in preparing statistical reports and presentations for management review
- Conducted preliminary data analysis using Excel functions and formulas to support business intelligence efforts
- Participated in testing new software systems and provided feedback on data management functionality

EDUCATION

Bachelor of Science in Statistics
University of Lagos | Lagos, Nigeria
Graduated: May 2017

Relevant Coursework: Statistical Inference, Regression Analysis, Probability Theory, Data Mining, Research Methods in Social Sciences

TECHNICAL SKILLS

Data Analysis & Visualization: Microsoft Excel (Advanced: Pivot Tables, VLOOKUP, Macros, Power Query), Statistical Analysis, Data Modeling

Programming & Databases: SQL (MySQL, PostgreSQL), Database Management, Query Optimization

Statistical Methods: Descriptive Statistics, Inferential Statistics, Hypothesis Testing, Regression Analysis, Forecasting

Domain Knowledge: Financial Analysis, Auditing, Data Quality Testing, Business Intelligence

Tools & Systems: Data Validation Tools, ETL Processes, Reporting Platforms

CERTIFICATIONS

Microsoft Excel Expert Certification - 2021
SQL for Data Analysis Certificate - 2020

ACHIEVEMENTS

- Identified critical data discrepancies during financial audit that prevented $500K in potential losses
- Recognized as "Analyst of the Quarter" (Q3 2023) for exceptional contribution to revenue forecasting accuracy
- Developed comprehensive testing framework adopted company-wide for data validation processes