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J

Jackson Maina

AI Training Specialist

KENYA flag
Nairobi, Kenya
$20.00/hrExpertAppenClickworkerData Annotation Tech

Key Skills

Software

AppenAppen
ClickworkerClickworker
Data Annotation TechData Annotation Tech
LabelboxLabelbox
OneFormaOneForma
Snorkel AISnorkel AI
TelusTelus
TolokaToloka
Other

Top Subject Matter

Technology and Internet-High accuracy data labelling and annotation
Media and Entertainment-Video frame annotation and object tracking
Education and Edtech-AI training pipelines and machine learning fundamentals

Top Data Types

ImageImage
VideoVideo
TextText

Top Task Types

Classification
Evaluation Rating
Question Answering
Text Generation
Object Detection
Polygon
Bounding Box
Point Key Point
Polyline
Cuboid
Text Summarization
Transcription
Red Teaming
Segmentation
Entity Ner Classification
Fine Tuning

Freelancer Overview

AI Data Annotator and Swahili–English Language Specialist experienced in training datasets for machine learning and natural language processing systems. Skilled in text classification, translation evaluation, conversational AI annotation, and computer vision tasks including image labeling and video object tracking. Known for maintaining high annotation accuracy, following detailed guidelines, and delivering consistent, high-quality data for AI model training.

ExpertSwahiliEnglish

Labeling Experience

Image Annotation and Object Detection for Computer Vision Models

ImageBounding Box
Annotated image datasets used for training computer vision models. Tasks included drawing bounding boxes around objects, tagging visual categories, and labeling attributes to improve object detection and recognition accuracy. Maintained high annotation quality while following strict labeling guidelines and consistency standards.

Annotated image datasets used for training computer vision models. Tasks included drawing bounding boxes around objects, tagging visual categories, and labeling attributes to improve object detection and recognition accuracy. Maintained high annotation quality while following strict labeling guidelines and consistency standards.

2024 - Present

Translation Evaluation and Linguistic Data Labeling

OtherTextEvaluation Rating
Reviewed and evaluated machine-translated Swahili and English text to improve translation quality for AI models. Tasks included ranking translation outputs, identifying linguistic errors, and providing feedback on fluency, accuracy, and contextual meaning to support better multilingual AI performance.

Reviewed and evaluated machine-translated Swahili and English text to improve translation quality for AI models. Tasks included ranking translation outputs, identifying linguistic errors, and providing feedback on fluency, accuracy, and contextual meaning to support better multilingual AI performance.

2023 - Present

Video Data Annotation and Object Tracking for AI Systems

VideoObject Detection
Labeled and annotated video datasets used to train AI models in motion detection and activity recognition. Responsibilities included tracking objects across video frames, tagging events, and ensuring accurate temporal annotations to improve model performance in dynamic environments.

Labeled and annotated video datasets used to train AI models in motion detection and activity recognition. Responsibilities included tracking objects across video frames, tagging events, and ensuring accurate temporal annotations to improve model performance in dynamic environments.

2024 - 2025

Multilingual Text Classification and AI Training Data Annotation

TextClassification
Annotated multilingual datasets to train AI models in identifying intent, sentiment, and topic categories. Tasks included classifying user-generated content, detecting harmful or misleading text, and validating dataset accuracy according to labeling guidelines. Maintained consistency and high-quality annotations to support model training and evaluation.

Annotated multilingual datasets to train AI models in identifying intent, sentiment, and topic categories. Tasks included classifying user-generated content, detecting harmful or misleading text, and validating dataset accuracy according to labeling guidelines. Maintained consistency and high-quality annotations to support model training and evaluation.

2024 - 2025

Education

U

University of Nairobi

Bachelor of Arts, Linguistics

Bachelor of Arts
2010 - 2014

Work History

G

Gotranscript

Law translator

Nairobi
2025 - 2025