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J

Joseph Makori

AI Trainer / Data Annotator

Kenya flagNairobi, Kenya
$15.00/hrExpertAppenOtherData Annotation Tech

Key Skills

Software

AppenAppen
Other
Data Annotation TechData Annotation Tech
Micro1
OneFormaOneForma
CVATCVAT
LabelboxLabelbox

Top Subject Matter

LLM outputs
historical analysis
creative content

Top Data Types

DocumentDocument
ImageImage
VideoVideo

Top Task Types

Classification
Computer Programming Coding
Transcription

Freelancer Overview

AI Trainer / Data Annotator. Core strengths include Appen and Other. Education includes Bachelor of Science, University of Minnesota (2020). AI-training focus includes data types such as Text and labeling workflows including Evaluation, Rating, and Classification.

ExpertEnglish

Labeling Experience

Appen

AI Trainer / Data Annotator

AppenText
As an AI Trainer and Data Annotator at Crowdgen by Appen, I evaluated over 50,000 LLM responses for accuracy, relevance, clarity, and safety using detailed rubrics. I performed ranking and comparison on AI prompt outputs and created custom evaluation rubrics for nuanced text such as historical facts and creative content. I ensured consistent guideline compliance and high-fidelity data for AI model training while managing high-volume annotation workflows. • Applied rubric-based scoring to text responses for LLM evaluation. • Flagged and documented inconsistencies to provide structured justifications. • Developed custom rubrics for specialized subject matter including historical and creative textual data. • Automated repetitive annotation tasks with Python scripting for increased efficiency.

As an AI Trainer and Data Annotator at Crowdgen by Appen, I evaluated over 50,000 LLM responses for accuracy, relevance, clarity, and safety using detailed rubrics. I performed ranking and comparison on AI prompt outputs and created custom evaluation rubrics for nuanced text such as historical facts and creative content. I ensured consistent guideline compliance and high-fidelity data for AI model training while managing high-volume annotation workflows. • Applied rubric-based scoring to text responses for LLM evaluation. • Flagged and documented inconsistencies to provide structured justifications. • Developed custom rubrics for specialized subject matter including historical and creative textual data. • Automated repetitive annotation tasks with Python scripting for increased efficiency.

2023 - Present

Freelance AI/Data Services Provider

OtherTextClassification
As a Freelance AI/Data Services Provider on Fiverr and independently, I delivered data entry, annotation, and quality review projects translating client guidelines into precise outputs. I optimized prompts and evaluated AI-generated content for EdTech and content creation applications. I applied structured reasoning and quality assurance methods to ensure accurate classification results for various client projects. • Interpreted and implemented diverse annotation instructions from clients. • Reviewed and classified AI-generated educational and creative content. • Performed detailed data entry and error detection in annotated datasets. • Enhanced prompts and outputs to support EdTech annotation workflows.

As a Freelance AI/Data Services Provider on Fiverr and independently, I delivered data entry, annotation, and quality review projects translating client guidelines into precise outputs. I optimized prompts and evaluated AI-generated content for EdTech and content creation applications. I applied structured reasoning and quality assurance methods to ensure accurate classification results for various client projects. • Interpreted and implemented diverse annotation instructions from clients. • Reviewed and classified AI-generated educational and creative content. • Performed detailed data entry and error detection in annotated datasets. • Enhanced prompts and outputs to support EdTech annotation workflows.

2021 - 2023

Education

U

University of Minnesota

Bachelor of Science, Computer Science

Bachelor of Science
2016 - 2020

Work History

O

Onfon Media

Programmer

Nairobi
2025 - Present