OLANIYI BELLO
Summary
Accomplished data professional with expertise in data visualisation using Power BI, Tableau, and Excel. Proficient in SQL and database management, advanced Excel functions, and ETL processes for data cleaning and transformation. Skilled in business intelligence reporting, data storytelling, and predictive analytics. Adept at requirement gathering, stakeholder management, and utilising communication tools such as Slack and Microsoft Teams. Career goal includes leveraging analytical skills to drive strategic decision-making and business growth.
Overview
12
12
years of professional experience
1
1
Certification
Work History
Freelance Business Data Analyst
Upwork
12.2024 - Current
- Delivered tailored data analytics solutions for over 10 global clients across various industries, including retail, e-commerce, marketing, and finance, resulting in an average increase of 20% in operational efficiency..
- Developed comprehensive reports and interactive dashboards using SQL and Power BI to support strategic decision-making.
- Conducted detailed data analysis to optimize pricing strategies, inventory management, and customer segmentation, contributing to revenue growth of 10-15% for key clients..
- Collaborated directly with stakeholders to gather requirements, understand business objectives, and translate complex data into actionable insights.
- Addressed data discrepancies and validated data integrity to ensure accurate reporting.
Data Associate
10Alytic
07.2023 - 05.2024
- Integrated SQL queries tools (SSMS, PostgreSQL) with Power BI to extract, transform, and load (ETL) data, ensuring seamless connectivity, accurate data modeling, and robust analytical capabilities.
- Performed statistical analysis in Excel to investigate revenue variability across industries, uncovering key outliers that informed enrolment and pricing strategies.
- Built and deployed interactive dashboards in Power BI and Tableau to track real-time KPIs and insights, improving data accessibility for non-technical stakeholders by 40%.
- Collaborated seamlessly using Microsoft 365 (Teams, SharePoint, Excel, PowerPoint) to streamline data-sharing processes, foster cross-departmental collaboration, and significantly improve productivity across analytics and curriculum development teams.
- Presented complex data insights to executive stakeholders in 9+ strategic meetings, contributing to a 35% increase in client satisfaction through actionable recommendations.
- Optimised SQL queries and stored procedures in PostgreSQL and Microsoft SQL Server, reducing query run-times and improving system efficiency by 20%.
- Enhanced data modelling and relationship using Power Query and DAX, resulting in improved accuracy and faster data transformation workflows.
Intern Energy Research Analyst
Teesside University
01.2022 - 06.2022
- Developed self-interactive Tableau dashboards to track biodiesel fuel production efficiency, delivering insights that increased production output by 10%.
- Integrated various data sources (Excel, PDF, Text/CSV, Webpage) into Power BI for comprehensive analysis, enhancing decision making.
- Designed and delivered data-driven presentations for academic and industry stakeholders, ensuring clear communication of research findings.
- Collaborated with stakeholders to gather requirements and deliver actionable insights that improved project outcomes.
- Streamlined reporting and collaboration using Office 365 tools including SharePoint, Outlook, and Teams.
Business Data Manager
M.OLA-OLUWA NIG LTD
05.2019 - 03.2021
- Created interactive reports with drill-through features, slicers, and dynamic visuals, enabling stakeholders to explore cost and pricing impacts on profitability across dealership, real estate, and retail sectors.
- Migrated data storage and management process from Excel to Access Database, resulting in inventory tracking accuracy and reduced data processing time.
- Analysed customer purchase trends and payment behavior patterns to identify target customer segments, enabling proactive strategies and personalized recommendations that improved customer engagement and retention.
- Spearhead the migration of reporting processes from Excel and PowerPoint to Power BI, resulting in a 30% reduction in reporting cycle time and enhanced visualization capabilities.
- Designed and delivered comprehensive training programs and user-guides for staff on modern data management and visualization tools (Power BI and Access), resulting in a 21% increase in team productivity and analytical efficiency.
Junior Data Analyst
Larfage Cement Company
09.2013 - 02.2016
- Communicated with cross-functional teams to retrieve project business goal, data gathering requirement, identify KPI’s, and performing analysis to present recommendations that support business decision making.
- Conducted pricing and profitability analysis using advanced Excel models, enhancing financial decision-making.
- Applied advanced Excel techniques (Power Query, Pivot Tables, VLOOKUP, INDEX/MATCH) to analyse and interpret data, enhancing strategic planning and improving operational efficiency by 20%.
Education
MSc -
Petroleum Engineering
BSc -
Petroleum and Natural Gas Engineering
Skills
- Data visualisation (Power BI, Tableau, Excel)
- SQL & Database Management
- Advance Excel (Excel Functions, Pivot Tables, Power Query)
- Data Cleaning and Transformation (ETL)
- Business Intelligence & Reporting
- Data storytelling & Presentation
- Requirement gathering & Stakeholder Management
- Data modelling & Predictive Analytics
- Forecasting and Trend Analysis
- Communication and Collaboration tools (Slack, Microsoft Teams, Outlook)
- SaaS (Microsoft Power Bi Service)
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Certification
- Udacity: Nanodegree in Data Analysis and Visualisation with Microsoft Power BI
- Udacity: Nanodegree in Business Analytics
- 10Alytic: Master of Data Analyst Certification
- KPMG Forage: Data Analytics Job Simulation
- KPMG Forage: Data Visualisation – Empowering Business with Effective Insights
Timeline
Freelance Business Data Analyst
Upwork
12.2024 - Current
Data Associate
10Alytic
07.2023 - 05.2024
Intern Energy Research Analyst
Teesside University
01.2022 - 06.2022
Business Data Manager
M.OLA-OLUWA NIG LTD
05.2019 - 03.2021
Junior Data Analyst
Larfage Cement Company
09.2013 - 02.2016
MSc -
Petroleum Engineering
BSc -
Petroleum and Natural Gas Engineering
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