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Esther Wanjeri

Esther Wanjeri

Data Annotator - Machine Learning & AI

KENYA flag
Nairobi, Kenya
$10.00/hrIntermediateAppenClickworkerCloudfactory

Key Skills

Software

AppenAppen
ClickworkerClickworker
CloudFactoryCloudFactory
CVATCVAT
LabelboxLabelbox
Label StudioLabel Studio
OneFormaOneForma
RemotasksRemotasks
TolokaToloka
TelusTelus

Top Subject Matter

No subject matter listed

Top Data Types

DocumentDocument
ImageImage
TextText
VideoVideo

Top Label Types

Action Recognition
Audio Recording
Bounding Box
Data Collection
Object Detection
Polygon
Prompt Response Writing SFT

Freelancer Overview

I am a dedicated data annotator and data labeler with hands-on experience supporting AI and machine learning projects through precise annotation of images, text, and audio. My background includes working on diverse platforms such as Toloka, Remotasks, and FUZU, where I consistently delivered high-quality labeled data for computer vision and NLP tasks, meeting strict accuracy standards and tight deadlines. I am proficient with annotation tools like CVAT, Labelbox, and Super Annotate, and skilled in using Google Sheets and Microsoft Excel for data management. My attention to detail, adaptability to new tools, and strong communication skills have enabled me to collaborate effectively with quality assurance teams and contribute to continuous process improvements. I am committed to ensuring data integrity and reliability in every project I undertake.

IntermediateEnglishSwahiliFrench

Labeling Experience

No Data Labeling experience added

Esther W. hasn’t added any AI Training or Data Labeling experience to their OpenTrain profile yet.

Education

Z

Zetech university

Bachelor's in education , Education

Bachelor's in education
2020 - 2022

Work History

F

Fuzu

Data labler

none
2025 - Present
T

Transcriber.com

Freelancer Transcriber

none
2024 - 2025