MARY MAINA
I’m Mary Maina, a detail-oriented remote freelancer with a strong background in AI data annotation, content evaluation, research, and writing.
About
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.
- 6 years' experience
- Joined September 2026
Skills· 11
Languages
- EnglishFluent
- Kikuyu, GikuyuFluent
- SwahiliFluent
- ChineseIntermediate
Industry experience
- Education
- Professional Services
- Transportation & Logistics
- Financial Services
- Other
Work experience
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.
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.
Education
still pursuing
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