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oluwatosin alaiya

@oluwatosinalaiya

Freelance Data Analyst on Upwork and Fiverr who built Power BI dashboards for healthcare, UPS shipping, and Adidas sales.

Nigeria

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As a Freelance Data Analyst on Upwork and Fiverr, I design and maintain interactive Power BI dashboards for clients, using Power Query and DAX to clean, model, and analyze data.

I built a Healthcare Analytics Dashboard covering 500 patients across four hospital branches and roughly ₱141M in tracked revenue. I also built a UPS Shipping Performance Dashboard tracking 77 shipments, ₦580K in revenue, and a 75% on-time delivery rate.

For an Adidas US Sales Dashboard, I analyzed $120.17M in revenue and $47.22M in profit across six product lines. I maintain a GitHub portfolio of dashboard projects with documented READMEs and walkthrough videos, and I'm currently pursuing the Microsoft PL-300 Power BI Data Analyst certification.

Experience

Work history, roles, and key accomplishments

Current

Freelance Data Analyst

Current

Upwork / Fiverr

Apr 2025 - Present (1 year 6 months)

Designed and maintained interactive Power BI dashboards for clients, applying data visualization, Power Query, and DAX to clean, model, and analyze data. Built multiple analytics dashboards including healthcare, shipping, and retail sales projects.

Power BI DAX Power Query Data Modeling Data Visualization Data Analysis Statistical Analysis Business intelligence reporting GitHub

Virtual Assistant

Upwork

May 2023 - Jan 2025 (1 year 8 months)

Performed accurate data entry and record management for remote clients, maintaining organized and up-to-date databases. Developed strong organizational and attention-to-detail habits that carried directly into data analytics work.

Data Entry Records Management Organization Attention To Detail

Customer Service Representative

Upwork

Jan 2022 - Apr 2023 (1 year 3 months)

Provided remote customer support via chat and email for clients, resolving inquiries and maintaining response-time standards. Built strong written communication and problem-solving skills through daily client interaction.

Customer Support Written Communication Problem Solving