EXPLORE

(6 reviews)

Daniel O.

@Danzy262

5.0

2.4

83%

Data Analyst | Excel, Power BI & SQL

$10 USD / Hour

・

Nigeria (4:45 PM)

・

Joined on August 12, 2025

$10 USD / Hour

・

I’m a results-driven Data Analyst who turns raw, unstructured data into clear insights that businesses can actually use. With strong skills in Excel, Power BI, and SQL, I specialize in data cleaning, analysis, and interactive dashboards that support smarter decisions, reveal trends, and improve performance.

Verifications

On time

100%

On budget

100%

Accept rate

100%

Repeat hire rate

17%

See all Data Analysts in Nigeria

Portfolio

I designed and optimized a professional Excel-based diagnostic checklist tool for structured patient assessment and record keeping.

The spreadsheet automatically calculates patient age using the date of birth and assessment date, eliminating manual calculations and reducing errors. It uses Excel Tables to ensure formulas auto-extend as new records are added, making the tool scalable and easy to maintain.

The layout was carefully structured to support clinical screening workflows, with clearly labeled fields for patient identification, assessment dates, and diagnostic checklist inputs. The design focuses on clarity, usability, and accuracy so non-technical users can confidently enter data while the sheet handles all calculations in the background.

This project demonstrates my ability to transform real-world requirements into a clean, automated Excel solution that improves efficiency, accuracy, and data organization.

Automated Excel Diagnostic Checklist

This project involved building an interactive Excel profit dashboard to analyze profitability across time, products, regions, countries, and customer segments.

The dashboard uses pivot tables, pivot charts, slicers, and structured data modeling to allow dynamic filtering and real-time analysis.

It helps businesses identify high-profit segments, seasonal trends, and product-level profitability to support strategic decision-making.

Excel Profit Analysis Dashboard

This project involved creating an interactive Excel sales dashboard to analyze performance across regions, products, countries, and order priorities.

I designed structured worksheets, pivot tables, charts, and slicers to allow dynamic filtering and real-time insights.

The dashboard helps businesses quickly identify trends, top-performing products, and regional sales patterns, reducing manual reporting and improving decision-making.

Excel Sales Performance Dashboard

Automated Excel Diagnostic Checklist

Excel Profit Analysis Dashboard

Excel Sales Performance Dashboard

5.0 · 6 Reviews

Reviews

Google Sheets Expense Auditor

very good work keep it up

+3 more

Pinterest User Research

Great work delivered perfectly on time and budget. Daniel communicates clearly and provides regular updates on the task. I highly recommend him!

Data Entry

Market Research

Data Collection

Complete Thesis Writer

Hired third time Now he want to released fund before, Really Frustration Never to hir him

+1 more

PDF to Excel Convert with Accuracy

would like to hire again, But Force me to leave feedback

+1 more

Excel Profit Margin & Cost Analysis Dashboard

Delivered perfectly

+1 more

Data Analyst

Mar, 2021 - Present

•

5 years, 1 month

Remote

Mar, 2021 - Present

•

5 years, 1 month

I work with raw and structured data to deliver accurate analysis, clear reports, and actionable insights. My responsibilities include cleaning and preparing data, analyzing trends and patterns, and creating dashboards using Excel, Power BI, and SQL. I focus on presenting data in a simple, easy-to-understand format that helps clients track performance, identify opportunities, and make informed business decisions.

Texas, United States

Closed User

@danielc322

Client – Direct Collaborator

I worked with Olasehinde Daniel on multiple freelance projects, and he was professional, reliable, and easy to work with throughout our collaboration. He communicated clearly, followed instructions well, and delivered tasks on time. He showed good attention to detail and was always open to feedback and improvements. Overall, it was a smooth working experience, and I would be comfortable working with him again on similar projects.

Mar, 2021 - Present

•

5 years, 1 month

University of Ilorin

2017 - 2021

•

4 years

B.sc. Statistics

Nigeria

2017 - 2021

•

4 years

Google Data Analytics Professional Certificate

2022

Microsoft

Completed a comprehensive professional program covering data analysis, visualization, and reporting using Excel, SQL, and Tableau. Gained practical skills in cleaning, interpreting, and presenting complex datasets for business insights.

2022

Sales Performance Dashboard Report

2021

Self-Published

Developed a comprehensive Sales Performance Dashboard Report to track and analyze sales trends, revenue growth, and product performance. Leveraged Excel, SQL, and Power BI to create interactive visualizations and actionable insights, helping businesses make data-driven decisions and optimize sales strategies.

2021