Looking for a job

Winner Donald

@winnerdonald

I’m a Data Analyst skilled in Power BI, Excel, and SQL, focused on transforming raw data into clear insights that support smarter business decisions.

Nigeria

Message

What I'm looking for

I seek a data-focused role where I can build interactive Power BI solutions, influence decisions, and grow analytics impact within collaborative teams.

I am a Data Analyst with hands-on experience in data cleaning, modelling, visualisation, and dashboard design.

I also specialise in using Power Query, Power BI, Excel, and basic SQL to transform raw datasets into simple, actionable insights.
I’ve worked across different domains including marketing, sales, customer analytics, and operational performance.

I have successfully transformed complex dataset into actionable insight that help teams make better decisions. I’m always improving my analytical skills and learning new ways to work efficiently with data.

Experience

Work history, roles, and key accomplishments

Data Analyst (Portfolio Projects)

Personal Project

Jan 2024 - Mar 2025 (1 year 2 months)

• I built different analytics dashboards using Power BI, Power Query, SQL, and Excel.
• I analyzed flight delay performance, bank campaign results dataset
• Cleaned and transformed raw datasets using Power Query and SQL.
•I also designed KPIs, DAX measures, and drill-down visuals to uncover insights and support business decisions.

Power BI Excel Tableau Data Modeling Data Analysis Data Cleaning DAX Power Query

Data Analyst(Personal Project)

Personal Project

Jan 2024 - Mar 2025 (1 year 2 months)

I analyzed an ecommerce and retail datasets using Power query, Excel and SQL

I built DAX-driven measures to track total revenue, order volume, units sold, and delivery time, enabling leadership to quickly spot high-performing categories .

I revealed that late deliveries increased churn likelihood by 25%, helping guide improvements to logistics operations

Power BI DAX Power Query Data Modeling Excel SQL Dashboarding KPI Tracking Data Cleaning

Data analyst(Personal Project)

Personal project

Jan 2024 - Mar 2025 (1 year 2 months)

I modeled and analyzed a BMW global sales dataset, covering about 253M units sold across various regions, fuel types
I also developed DAX measures for average selling priceEV share % (Electric Vehicle Sales Shares), fuel-type split, and regional performance, thereby improving executive insights by 40%.

Power BI Power Query Excel Data Visualization Data Cleaning