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I’m Mary Maina, a detail-oriented remote freelancer with a strong background in AI data annotation, content evaluation, research, and writing. I review and classify text and visual data carefully against provided guidelines, ensuring relevance, accuracy, and consistency while catching errors or ambiguous cases. Alongside my freelance work, I’m currently studying Procurement and Supply Chain Management, which helps me approach business research and structured reporting with practical understanding of purchasing, suppliers, inventory, and process improvement. I enjoy working independently on project-based tasks, learning new platforms quickly, and delivering clear, well-organized written and annotated outputs to quality standards.…I’m Mary Maina, a detail-oriented remote freelancer with a strong background in AI data annotation, content evaluation, research, and writing. I review and classify text and visual data carefully against provided guidelines, ensuring relevance, accuracy, and consistency while catching errors or ambiguous cases. Alongside my freelance work, I’m currently studying Procurement and Supply Chain Management, which helps me approach business research and structured reporting with practical understanding of purchasing, suppliers, inventory, and process improvement. I enjoy working independently on project-based tasks, learning new platforms quickly, and delivering clear, well-organized written and annotated outputs to quality standards.

MARY MAINA

Data Annotator, Data Scientist, Content Creator, +3

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I’m Mary Maina, a detail-oriented remote freelancer with a strong background in AI data annotation, content evaluation, research, and writing. I review and classify text and visual data carefully against provided guidelines, ensuring relevance, accuracy, and consistency while catching errors or ambiguous cases. Alongside my freelance work, I’m currently studying Procurement and Supply Chain Management, which helps me approach business research and structured reporting with practical understanding of purchasing, suppliers, inventory, and process improvement. I enjoy working independently on project-based tasks, learning new platforms quickly, and delivering clear, well-organized written and annotated outputs to quality standards.…I’m Mary Maina, a detail-oriented remote freelancer with a strong background in AI data annotation, content evaluation, research, and writing. I review and classify text and visual data carefully against provided guidelines, ensuring relevance, accuracy, and consistency while catching errors or ambiguous cases. Alongside my freelance work, I’m currently studying Procurement and Supply Chain Management, which helps me approach business research and structured reporting with practical understanding of purchasing, suppliers, inventory, and process improvement. I enjoy working independently on project-based tasks, learning new platforms quickly, and delivering clear, well-organized written and annotated outputs to quality standards.

Available to hire

I’m Mary Maina, a detail-oriented remote freelancer with a strong background in AI data annotation, content evaluation, research, and writing. I review and classify text and visual data carefully against provided guidelines, ensuring relevance, accuracy, and consistency while catching errors or ambiguous cases.

Alongside my freelance work, I’m currently studying Procurement and Supply Chain Management, which helps me approach business research and structured reporting with practical understanding of purchasing, suppliers, inventory, and process improvement. I enjoy working independently on project-based tasks, learning new platforms quickly, and delivering clear, well-organized written and annotated outputs to quality standards.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Beginner

Language

English

Fluent

Kikuyu, Gikuyu

Fluent

Swahili

Fluent

Chinese

Intermediate

Work Experience

Independent AI, Data & Digital Projects (Remote) at Independent / Freelance

January 1, 2025 - Present

Reviewed and classified digital content according to predefined instructions and project criteria. Performed AI data annotation and labeling for text and visual data, including object identification and bounding-box labeling, and ensured guideline compliance. Conducted quality assurance checks to confirm relevance, accuracy, and consistency, and flagged ambiguous or inconsistent cases. Completed online assessments and onboarding activities, adapted to new platforms and workflows, and delivered structured work products. Also supported research, information verification, data entry, document preparation, typing, and structured content review for project deliverables.

Academic Research & Business Analysis (University Projects) at Kirinyaga University / University projects

January 1, 2020 - Present

Conducted research and analysis related to procurement, supply chain, and business management topics. Produced structured reports and assignments requiring clear reasoning, accurate terminology, and careful documentation. Applied business knowledge to supplier management, inventory, costs, purchasing decisions, quality management, and process improvement. Worked with quantitative business concepts such as cost accounting, CVP analysis, break-even analysis, WACC, present value, EOQ, and inventory costing while maintaining organization and clarity in written outputs.