Adedoyin David

Key Skills

Software

Labelbox

Appen

Top Subject Matter

AI/ML model training

conversational AI

Nlp Domain Expertise

Top Data Types

Image

Text

Audio

Document

Top Task Types

Classification

Transcription

Freelancer Overview

Highly skilled AI Language Specialist and Data Annotation Expert with over 6 years of professional experience in AI evaluation, translation, transcription, proofreading, and machine learning data annotation. Proven ability to support the development of AI and Large Language Models (LLMs) by delivering high-quality linguistic data, accurate annotations, and detailed evaluation reports. Experienced in training AI systems, evaluating model outputs, correcting machine translations, tagging linguistic datasets, and transcribing multilingual audio content while maintaining strict quality and confidentiality standards. Recognized for strong attention to detail, linguistic accuracy, and ability to follow complex annotation guidelines, making me a reliable contributor to AI training pipelines, NLP datasets, and generative AI improvement projects. Passionate about helping organizations build accurate, culturally aware, and high-performing AI systems through precise language analysis and human-in-the-loop evaluation.

Labeling Experience

Senior AI Data Annotation Specialist

LabelboxImageClassification

As a Senior AI Data Annotation Specialist, I labeled and annotated large-scale text, speech, and image datasets to train AI and machine learning models. I performed dataset evaluation for natural language understanding, sentiment analysis, entity recognition, and intent classification. I processed thousands of annotation tasks per week with over 98% accuracy and collaborated closely with data scientists to refine annotation frameworks. • Labeled image, text, and speech datasets for machine learning. • Evaluated AI-generated responses and annotated data for NLP tasks. • Conducted quality review and validation of labeled datasets. • Utilized tools such as Labelbox, Prodigy, Doccano, Appen, Scale AI, and Amazon SageMaker Ground Truth.

As a Senior AI Data Annotation Specialist, I labeled and annotated large-scale text, speech, and image datasets to train AI and machine learning models. I performed dataset evaluation for natural language understanding, sentiment analysis, entity recognition, and intent classification. I processed thousands of annotation tasks per week with over 98% accuracy and collaborated closely with data scientists to refine annotation frameworks. • Labeled image, text, and speech datasets for machine learning. • Evaluated AI-generated responses and annotated data for NLP tasks. • Conducted quality review and validation of labeled datasets. • Utilized tools such as Labelbox, Prodigy, Doccano, Appen, Scale AI, and Amazon SageMaker Ground Truth.

2021 - Present

AI Content Evaluator & Data Labeler

LabelboxTextClassification

In the AI Content Evaluator & Data Labeler role, I reviewed, labeled, and categorized large text datasets including user queries and chatbot responses for NLP and AI training. I performed semantic labeling and contextual classification to improve language model training data. I evaluated AI-generated content for bias and accuracy, providing structured feedback to improve model performance. • Labeled, tagged, and categorized chatbot and user query datasets. • Conducted semantic and contextual classification for language models. • Evaluated AI-generated translations and automated content for quality. • Used Labelbox, Appen, and Doccano for high-volume annotation tasks.

In the AI Content Evaluator & Data Labeler role, I reviewed, labeled, and categorized large text datasets including user queries and chatbot responses for NLP and AI training. I performed semantic labeling and contextual classification to improve language model training data. I evaluated AI-generated content for bias and accuracy, providing structured feedback to improve model performance. • Labeled, tagged, and categorized chatbot and user query datasets. • Conducted semantic and contextual classification for language models. • Evaluated AI-generated translations and automated content for quality. • Used Labelbox, Appen, and Doccano for high-volume annotation tasks.

2019 - 2021

Data Annotation & Transcription Specialist

AppenAudioTranscription

As a Data Annotation & Transcription Specialist, I transcribed and annotated speech and multilingual audio datasets for voice recognition and speech-to-text models. I performed verbatim transcription and audio tagging across multiple dialects and accents. I also participated in dataset cleaning, segmentation, and linguistic tagging for NLP model training. • Transcribed and annotated speech datasets for AI voice systems. • Labeled multilingual datasets for machine translation and linguistic AI. • Assisted in dataset cleaning, segmentation, and tagging. • Used platforms such as Appen and Amazon SageMaker Ground Truth.

As a Data Annotation & Transcription Specialist, I transcribed and annotated speech and multilingual audio datasets for voice recognition and speech-to-text models. I performed verbatim transcription and audio tagging across multiple dialects and accents. I also participated in dataset cleaning, segmentation, and linguistic tagging for NLP model training. • Transcribed and annotated speech datasets for AI voice systems. • Labeled multilingual datasets for machine translation and linguistic AI. • Assisted in dataset cleaning, segmentation, and tagging. • Used platforms such as Appen and Amazon SageMaker Ground Truth.

2017 - 2019

Education

Work History