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Winnie Wanjohi

Winnie Wanjohi

Data Annotation Specialist - AI & Machine Learning

KENYA flag
Nairobi, Kenya
$20.00/hrIntermediateAppenClickworkerImerit

Key Skills

Software

AppenAppen
ClickworkerClickworker
iMeritiMerit

Top Subject Matter

No subject matter listed

Top Data Types

AudioAudio
ImageImage
TextText

Top Label Types

Data Collection
Text Generation
Text Summarization
Transcription

Freelancer Overview

I am a detail-oriented Data Annotation Specialist with hands-on experience labeling and categorizing large datasets—including images, videos, and text—to support AI and machine learning projects. I have worked with leading companies such as Telus International and RWS, where I maintained high accuracy and consistency while meeting daily annotation targets and tight project deadlines. My expertise includes using proprietary annotation tools for computer vision and natural language processing (NLP) tasks, conducting thorough quality checks, and collaborating with global teams to optimize workflows and resolve ambiguities. I am adaptable, quick to learn new tools and standards, and committed to delivering high-quality training data that powers advanced AI solutions.

IntermediateEnglishSwahili

Labeling Experience

Appen

AI TRAINER

AppenImageText Generation
Image annotation

Image annotation

2023 - 2024

Education

K

Kenyatta University

Bachelor of Public Policy and Administration, Public Policy and Administration

Bachelor of Public Policy and Administration
2019 - 2023
N

Ngararia Girls High School

High School Diploma, General Secondary Education

High School Diploma
2015 - 2018

Work History

V

Various Event Companies

Event Hostess

Nairobi
2021 - Present
V

Various Expos

Expo Booth Assistant

Nairobi
2023 - 2023