Brian Mulatya

Key Skills

Software

Appen

LabelImg

Top Subject Matter

General Machine Learning and AI

AI Model Evaluation and Training

Dataset Validation for AI Training

Top Data Types

Text

Image

Top Task Types

Classification

Data Collection

Fine Tuning

Evaluation Rating

Computer Programming Coding

Freelancer Overview

Data Labeling and AI Annotation Specialist (Freelance / Remote Projects). Brings 6+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Labelbox, Appen, and Google Sheets. Education includes Master of Science, University of Nairobi (2022) and Bachelor of Science, Kenyatta University (2021). AI-training focus includes data types such as Text and labeling workflows including Classification, Evaluation, and Rating.

Labeling Experience

Dataset Validation Project (Freelance)

TextData Collection

Verified labeled datasets and corrected inconsistencies for machine learning training. Conducted dataset cleaning, validation, and organization to ensure the integrity of training data. Followed strict guidelines for dataset preparation. • Focused on accuracy and reliability of labeled text data • Utilized Google Sheets for validation and dataset management • Ensured data quality with thorough checks and corrections • Supported high-quality AI training through structured data collection

Verified labeled datasets and corrected inconsistencies for machine learning training. Conducted dataset cleaning, validation, and organization to ensure the integrity of training data. Followed strict guidelines for dataset preparation. • Focused on accuracy and reliability of labeled text data • Utilized Google Sheets for validation and dataset management • Ensured data quality with thorough checks and corrections • Supported high-quality AI training through structured data collection

2022 - Present

AI Response Evaluation Project (Freelance)

AppenTextFine Tuning

Reviewed and rated AI-generated responses as part of model evaluation projects. Provided feedback on model outputs to improve quality and reduce errors. Applied project-specific guidelines to ensure response accuracy. • Evaluated and rated AI responses for quality • Ensured feedback aligned with annotation guidelines • Validated and corrected label inconsistencies in training data • Used structured spreadsheets and annotation tools for data management

Reviewed and rated AI-generated responses as part of model evaluation projects. Provided feedback on model outputs to improve quality and reduce errors. Applied project-specific guidelines to ensure response accuracy. • Evaluated and rated AI responses for quality • Ensured feedback aligned with annotation guidelines • Validated and corrected label inconsistencies in training data • Used structured spreadsheets and annotation tools for data management

2022 - Present

Data Labeling and AI Annotation Specialist (Freelance / Remote Projects)

LabelboxTextBounding Box

Labeled and annotated text datasets for machine learning and AI training projects. Tasks included text classification, sentiment analysis, and named entity recognition using established annotation guidelines. Consistently reviewed labeled data for quality assurance and accuracy. • Performed sentiment analysis and entity tagging on large-scale text data • Used various annotation tools including Labelbox, Remotasks, and Appen • Evaluated AI-generated outputs for relevance and model improvement • Maintained productivity while working remotely to meet deadlines

Labeled and annotated text datasets for machine learning and AI training projects. Tasks included text classification, sentiment analysis, and named entity recognition using established annotation guidelines. Consistently reviewed labeled data for quality assurance and accuracy. • Performed sentiment analysis and entity tagging on large-scale text data • Used various annotation tools including Labelbox, Remotasks, and Appen • Evaluated AI-generated outputs for relevance and model improvement • Maintained productivity while working remotely to meet deadlines

2022 - Present

Education

Work History