Diego Mejia

Key Skills

Software

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Top Subject Matter

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Freelancer Overview

I am a detail-oriented AI support professional with hands-on experience in data annotation, content evaluation, transcription, and quality assurance for AI training data. My background in computer science and AI development, combined with roles at Mindrift, Handshake AI, and Remotasks, has given me a strong foundation in text and image labeling, guideline-based evaluation, and Python scripting for AI workflows. I excel at following complex instructions, maintaining accuracy and consistency across large datasets, and identifying edge cases to improve model performance. I am comfortable working independently in remote settings and have contributed to projects involving language model evaluation and AI research, including building a reusable testing framework that reduced evaluation cycle time by 25%. My strong attention to detail, confidentiality, and productivity make me well suited for data labeling and AI training data roles.

Labeling Experience

AI Data Specialist (Freelance, Remote)

AppenImageData Collection

As an AI Data Specialist, I performed data collection, evaluation, and annotation to support the improvement of AI-generated content in English. My work included pairwise output comparisons, object tagging and labeling, and applying strict quality assurance guidelines. I maintained a consistent and high-quality workflow across various media types in a remote setting. • Completed pairwise comparisons by evaluating outputs on clarity, relevance, and instruction adherence. • Conducted object tagging and labeling across images, video, audio, and text data. • Applied detailed guidelines and quality assurance checks for data consistency. • Supported ongoing improvement of AI content through annotation and feedback.

As an AI Data Specialist, I performed data collection, evaluation, and annotation to support the improvement of AI-generated content in English. My work included pairwise output comparisons, object tagging and labeling, and applying strict quality assurance guidelines. I maintained a consistent and high-quality workflow across various media types in a remote setting. • Completed pairwise comparisons by evaluating outputs on clarity, relevance, and instruction adherence. • Conducted object tagging and labeling across images, video, audio, and text data. • Applied detailed guidelines and quality assurance checks for data consistency. • Supported ongoing improvement of AI content through annotation and feedback.

2024

Data Evaluation and Quality Reviewer (Contract, Remote)

AppenTextEvaluation Rating

As a Data Evaluation and Quality Reviewer, I reviewed AI outputs for quality, accuracy, and relevance according to defined rubrics and standards. I flagged and documented issues including missing constraints and inconsistencies. My reviews helped improve the safety and clarity of AI-generated English text content. • Issued clear notes on flagged low-quality, unsafe, or off-topic content. • Maintained a structured review process to ensure adherence to project guidelines. • Focused on English language outputs for clarity and relevance. • Contributed to enhancing the overall text quality of AI systems.

As a Data Evaluation and Quality Reviewer, I reviewed AI outputs for quality, accuracy, and relevance according to defined rubrics and standards. I flagged and documented issues including missing constraints and inconsistencies. My reviews helped improve the safety and clarity of AI-generated English text content. • Issued clear notes on flagged low-quality, unsafe, or off-topic content. • Maintained a structured review process to ensure adherence to project guidelines. • Focused on English language outputs for clarity and relevance. • Contributed to enhancing the overall text quality of AI systems.

2023 - 2024

Education

Work History