Open to opportunities

Caleb Raphael

@calebraphael

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Data analyst skilled in cleaning, transforming data and building actionable Power BI dashboards.

Nigeria

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What I'm looking for

I seek a role where I can apply data cleaning, SQL and Power BI skills to produce clear dashboards and operational insights, collaborate with teams, and grow in analytics.

I am a data analyst with hands-on experience cleaning and transforming large-scale datasets and building interactive Power BI dashboards to drive insights for stakeholders.

During a Data Analyst internship, I improved data quality by handling missing values, duplicates, and inconsistencies, used Excel and SQL to prepare COVID-19 and sales datasets, and identified temporal and geographic trends to inform decisions.

I communicate findings through reports and dashboards, collaborate across teams, and focus on turning raw data into clear, actionable insights that support organizational goals.

Experience

Work history, roles, and key accomplishments

Data Analyst

Joshua Adetife

Aug 2024 - Jan 2025 (5 months)

Cleaned and transformed large-scale COVID-19 and sales datasets using Excel and SQL, developed interactive Power BI dashboards to highlight regional trends, and improved data quality to support stakeholder decision-making.

Excel SQL Power BI Data Cleaning Data Visualization Dashboarding Data Quality Reporting

Education

Degrees, certifications, and relevant coursework

National Open University of Nigeria

Bachelor of Science, Computer Science

2023 -

Pursuing a Bachelor of Science in Computer Science at the National Open University of Nigeria, covering core computing concepts and practical data skills.