Dennis M.

Key Skills

Software

Other

Axiom AI

Anno-Mage

Appen

Top Subject Matter

AI and machine learning model training

AI training datasets (text classification/moderation)

AI training support (transcription)

Top Data Types

Image

Text

Audio

Top Task Types

Classification

Entity (NER) Classification

Transcription

Freelancer Overview

I am an experienced Data Labeling and AI Training Freelancer with over 7 years of professional freelance experience supporting artificial intelligence and machine learning projects. My expertise includes image annotation, text labeling, transcription, sentiment analysis, data categorization, content moderation, and quality assurance. I have worked with diverse datasets and consistently delivered accurate, high-quality annotations that improve AI model performance and reliability. I am highly detail-oriented, organized, and capable of meeting strict deadlines while maintaining data accuracy and confidentiality. Throughout my freelance career, I have collaborated with international clients and remote teams on AI training projects requiring precision, consistency, and analytical thinking. My strong communication skills, adaptability, and proficiency with online annotation tools allow me to efficiently handle large-scale labeling tasks. I am committed to delivering dependable results and contributing to the development of advanced AI systems through high-quality training data and professional project execution.

Labeling Experience

Data Labeling & AI Training Freelancer (quality assurance and verification)

OtherText

Performed quality assurance and verification activities to validate labeled datasets used in machine learning training. Ensured that annotations met required accuracy and consistency standards across multiple projects. Supported confidentiality requirements when handling sensitive project data during labeling and review.• QA reviews and dataset verification for labeled outputs. • Accuracy and consistency validation. • Handling sensitive data with confidentiality. • Maintaining quality standards under strict deadlines.

2019 - Present

Data Labeling & AI Training Freelancer (transcription support)

OtherAudioTranscription

Contributed to AI training activities involving transcription to convert spoken content into labeled text outputs. Followed project instructions to produce consistent, usable transcription data for model training. Applied quality checks to reduce errors and maintain dataset quality for downstream usage.• Transcription for AI training support. • Producing labeled transcription outputs. • Quality assurance to minimize transcription errors. • Meeting deadlines for multiple concurrent projects.

2019 - Present

Data Labeling & AI Training Freelancer (text labeling and classification support)

OtherTextEntity (NER) Classification

Performed text labeling and annotation for AI training, including categorization and labeling of text data for model learning. Supported AI training tasks such as sentiment analysis and content moderation to improve classification and moderation capabilities. Completed quality assurance reviews to maintain labeling reliability and dataset integrity.• Text annotation and labeling for ML tasks. • Sentiment analysis and content moderation support. • QA checks to ensure label accuracy and consistency. • Remote collaboration with global clients and teams.

2019 - Present

Data Labeling & AI Training Freelancer (image annotation support)

OtherImageClassification

Provided image annotation and labeling support for AI and machine learning projects, translating visual data into model-ready labels. Performed data categorization tasks to support downstream training and evaluation workflows. Conducted quality assurance checks to ensure labeled outputs were accurate and consistent across datasets.• Image annotation and dataset labeling for ML projects. • Data categorization and organization for training sets. • QA review for accuracy and consistency. • Collaboration with remote clients and teams on annotation tasks.

2019 - Present

Education

Work History