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Evans Njenga

Evans Njenga

AI Data Annotation Specialist - Media & Communications

KENYA flag
NAIROBI, Kenya
$20.00/hrExpertLabelbox

Key Skills

Software

LabelboxLabelbox

Top Subject Matter

No subject matter listed

Top Data Types

VideoVideo

Top Label Types

Point Key Point
Tracking
Translation Localization
Data Collection

Freelancer Overview

I am an experienced AI data annotation specialist with a background in media and communications, skilled in labeling, classifying, and evaluating multimodal datasets including text, image, and audio. My work has focused on improving AI system performance by following detailed guidelines, maintaining high accuracy, and ensuring consistency across large batches of data. I am proficient with web-based annotation platforms and have successfully completed remote projects for global clients, where I rated AI-generated outputs and supported dataset quality control. My strong attention to detail, analytical skills, and fluency in English, French, and Spanish enable me to deliver reliable results in diverse projects and domains.

ExpertEnglishSpanishFrench

Labeling Experience

Labelbox

Multimodal AI Data Annotation & Evaluation Project

LabelboxVideoPoint Key PointTracking
Worked on multiple AI data annotation and evaluation projects involving text, image, and audio datasets for machine learning model training and validation. Tasks included labeling datasets, classifying content, reviewing AI-generated outputs, and applying structured rubrics to rate response quality, safety, and relevance. Performed transcription and multilingual annotation tasks, ensuring linguistic accuracy and contextual consistency. Supported computer vision projects through object identification and visual content classification. Managed large annotation batches while maintaining high accuracy and strict compliance with project guidelines. Contributed to dataset improvement by identifying inconsistencies, ambiguous labels, and edge cases. Maintained consistent productivity and reliability while working remotely across distributed teams and platforms.

Worked on multiple AI data annotation and evaluation projects involving text, image, and audio datasets for machine learning model training and validation. Tasks included labeling datasets, classifying content, reviewing AI-generated outputs, and applying structured rubrics to rate response quality, safety, and relevance. Performed transcription and multilingual annotation tasks, ensuring linguistic accuracy and contextual consistency. Supported computer vision projects through object identification and visual content classification. Managed large annotation batches while maintaining high accuracy and strict compliance with project guidelines. Contributed to dataset improvement by identifying inconsistencies, ambiguous labels, and edge cases. Maintained consistent productivity and reliability while working remotely across distributed teams and platforms.

2022 - 2023

Education

E

Egerton University

Bachelor of Arts, Media and Communications

Bachelor of Arts
2019 - 2023

Work History

U

Upwork

Freelance Data Entry & Transcription Specialist

Nairobi
2023 - 2024