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Joseph Mungai

@josephmungai2

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Detail-oriented data and quality specialist skilled in annotation, validation, SQL, and Excel.

Kenya

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What I'm looking for

I seek remote full- or part-time roles focusing on data annotation, QA, and validation where I can apply SQL and Excel skills, deliver high accuracy, and grow analytically.

I am a detail-oriented Data and Quality Specialist with a Bachelor’s degree in Mathematics and Computer Science and hands-on experience in data annotation, quality assurance, validation, and reporting. I have designed and queried structured datasets using SQL, performed extensive data cleaning with Excel, and consistently delivered high-accuracy results in remote environments.

I excel at identifying inconsistencies, applying strict QA guidelines, and producing clear summary insights and structured reports. I am a reliable remote worker with strong analytical reasoning, fast accurate typing, and immediate availability for full- or part-time roles.

Experience

Work history, roles, and key accomplishments

Data and Quality Specialist

Freelance

Provided data annotation, quality assurance, and validation for structured and unstructured datasets, improving dataset consistency and accuracy for remote projects. Performed data cleaning and generated analytical reports using SQL and Excel to support decision-making.