David Mahinda

Key Skills

Software

Labelbox

Scale AI

Top Subject Matter

Digital media

Technology Policy & Product Operations

social platforms

Top Data Types

Text

Image

Document

Top Task Types

Classification

Freelancer Overview

Content Reviewer – Labeled and rated content for ML training and evaluation. Brings 3+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Labelbox and Scale AI. Education includes Bachelor of Science, Dedan Kimathi University of Technology (2025). AI-training focus includes data types such as Text and Image and labeling workflows including Evaluation, Rating, and Classification.

Labeling Experience

Content Reviewer – Labeled and rated content for ML training and evaluation

LabelboxText

As a Content Reviewer, I rated and evaluated large volumes of user-generated and AI-generated textual content for quality, accuracy, and policy compliance. I collaborated with a machine learning team to provide labeled datasets that support algorithm improvements. My work contributed to developing refined content evaluation guidelines and reporting on content trends. • Labeled and rated over 200 content pieces daily for training and QA purposes • Provided systematic feedback to enhance moderation algorithms • Mentored reviewers on evaluation techniques and standards • Utilized annotation tools and contributed to machine learning initiatives

As a Content Reviewer, I rated and evaluated large volumes of user-generated and AI-generated textual content for quality, accuracy, and policy compliance. I collaborated with a machine learning team to provide labeled datasets that support algorithm improvements. My work contributed to developing refined content evaluation guidelines and reporting on content trends. • Labeled and rated over 200 content pieces daily for training and QA purposes • Provided systematic feedback to enhance moderation algorithms • Mentored reviewers on evaluation techniques and standards • Utilized annotation tools and contributed to machine learning initiatives

2025 - Present

Content Moderator & Quality Analyst – Classified text and image data for moderation systems

Scale AIImageClassification

As a Content Moderator & Quality Analyst, I classified and analyzed various forms of digital media, including text and images, to uphold platform guidelines and quality. I maintained high accuracy while processing and annotating content to aid in moderation system improvements. Regular participation in calibration sessions ensured labeling consistency across global teams. • Classified and annotated text and images across several digital domains • Achieved a 98% quality and accuracy rate in content annotation • Identified outlier cases and provided feedback to enhance data annotation policies • Created documentation to support future annotation and onboarding efforts

As a Content Moderator & Quality Analyst, I classified and analyzed various forms of digital media, including text and images, to uphold platform guidelines and quality. I maintained high accuracy while processing and annotating content to aid in moderation system improvements. Regular participation in calibration sessions ensured labeling consistency across global teams. • Classified and annotated text and images across several digital domains • Achieved a 98% quality and accuracy rate in content annotation • Identified outlier cases and provided feedback to enhance data annotation policies • Created documentation to support future annotation and onboarding efforts

2024 - 2025

Education

Work History