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Leonard Ndubi

Leonard Ndubi

AI Data Trainer / Annotator (Freelance)

KENYA flag
Embu, Kenya
$8.00/hrIntermediateOtherAppenLabelbox

Key Skills

Software

Other
AppenAppen
LabelboxLabelbox

Top Subject Matter

AI Model Training

Top Data Types

TextText
Computer Code ProgrammingComputer Code Programming

Top Task Types

Evaluation Rating
Classification

Freelancer Overview

I have hands on experience in AI data training and annotation, where I have worked on tasks involving data labeling, content evaluation, and quality review. My work has required a high level of accuracy, consistency, and attention to detail to ensure that datasets meet strict guidelines for training machine learning models. I am experienced in following complex instructions and maintaining data quality across different types of annotation projects. In addition, I have a background in software testing and ICT support, which has strengthened my analytical thinking and problem-solving skills. I am skilled in identifying errors, reviewing outputs, and providing structured feedback to improve system performance. I am highly adaptable to new tools and workflows, and I am committed to delivering reliable, high quality results in AI training and data annotation tasks.

IntermediateSwahiliEnglish

Labeling Experience

Text Classification Assistant (Freelance)

TextClassification
Assisted in categorizing text into predefined labels for AI model development. Ensured consistent labeling and followed project guidelines to maintain dataset quality.

Assisted in categorizing text into predefined labels for AI model development. Ensured consistent labeling and followed project guidelines to maintain dataset quality.

2024 - Present

AI Data Trainer / Annotator (Freelance)

OtherTextEvaluation Rating
As an AI Data Trainer and Annotator, I performed text-based evaluation and rating tasks to support machine learning model development. My responsibilities included reviewing AI-generated responses and assessing them for accuracy, relevance, coherence, and adherence to provided guidelines. I applied strong attention to detail when identifying errors, inconsistencies, and areas for improvement in model outputs. I consistently maintained high quality standards while meeting deadlines in a remote work environment. My work required strict adherence to instructions, critical thinking, and the ability to deliver reliable and consistent evaluations.

As an AI Data Trainer and Annotator, I performed text-based evaluation and rating tasks to support machine learning model development. My responsibilities included reviewing AI-generated responses and assessing them for accuracy, relevance, coherence, and adherence to provided guidelines. I applied strong attention to detail when identifying errors, inconsistencies, and areas for improvement in model outputs. I consistently maintained high quality standards while meeting deadlines in a remote work environment. My work required strict adherence to instructions, critical thinking, and the ability to deliver reliable and consistent evaluations.

2024 - Present

Education

U

University of Embu

Bachelor of Science, Computer Science

Bachelor of Science
Not specified

Work History

N

National Council For Persons With Disabilities

ICT Support Assistant

Embu
2022 - 2023