WINNIE KIMANI
@winniekimani
Detail-oriented Data Annotator training multimodal datasets for reliable ML models.
What I'm looking for
I’m a detail-oriented and reliable Data Annotator with hands-on experience labeling text, image, audio, and video data to train and evaluate machine learning models. I follow detailed labeling guidelines to maintain high accuracy and consistency across large data volumes.
In my current remote role with Sama, I’ve labeled and categorized over 50,000 data points, performing bounding box, polygon, and segmentation annotation for computer vision datasets, and tagging text for sentiment analysis, intent detection, and content moderation. I’ve maintained an accuracy and quality score above 96% by reviewing guidelines carefully and flagging ambiguous edge cases to leads.
Before that, as a Generalist / Data Entry Associate at Kenya Data Solutions, I handled data entry, data cleaning, and record verification across spreadsheets and client systems, supporting research, customer support, and administrative coordination. I’m comfortable working independently in deadline-driven remote environments and collaborating with QA and project leads to meet quality targets.
Experience
Work history, roles, and key accomplishments
Data Annotator
Sama
Jan 2023 - Present (3 years 6 months)
Labeled and categorized 50,000+ multimodal data points (images, text, audio) following client guidelines for ML training and evaluation. Performed computer vision annotations and NLP tagging for sentiment, intent detection, and content moderation, maintaining 96%+ accuracy in a remote QA-driven workflow.
Generalist / Data Entry Associate
Kenya Data Solutions
Mar 2021 - Dec 2022 (1 year 9 months)
Performed accurate data entry, data cleaning, and record verification across spreadsheets and internal client systems. Supported cross-functional administrative and client-facing tasks while organizing and categorizing large volumes of information for reporting.
Education
Degrees, certifications, and relevant coursework
ALX Africa
Certificate in Data Annotation & AI Training Fundamentals, Data Annotation & AI Training
2022 -
Completed a Certificate in Data Annotation & AI Training Fundamentals at ALX Africa in 2022.
Kenyatta University
Bachelor of Science in Information Technology, Information Technology
2017 - 2021
Completed a Bachelor of Science in Information Technology at Kenyatta University (2017–2021).
Tech stack
Software and tools used professionally
Availability
Location
Authorized to work in
Job categories
Skills
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