Nathan Stewart

Key Skills

Software

Other

Lionbridge

Appen

Clickworker

Data Annotation Tech

Labelbox

Label Studio

Mercor

Micro1

Mindrift

OneForma

Toloka

Telus

Top Subject Matter

General AI/LLM Training

AI Data Quality Review

Audio Transcription

Top Data Types

Image

Audio

Text

Document

Top Task Types

Transcription

Entity Ner Classification

Classification

Bounding Box

Segmentation

Object Detection

Text Generation

Question Answering

Text Summarization

Fine Tuning

Evaluation Rating

Computer Programming Coding

Data Collection

Prompt Response Writing SFT

RLHF

Freelancer Overview

AI Data Contributor — Aether Microtask Project. Brings 10+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Other, Lionbridge, and Appen. Education includes Bachelor of Arts, University of Westminster (2017). AI-training focus includes data types such as Image, Audio, and Text and labeling workflows including Evaluation, Rating, and Transcription.

Labeling Experience

Freelance AI Data & Language Specialist

OtherTextClassification

Offered freelance data annotation, transcription, translation, and content evaluation services for AI training datasets. Managed end-to-end remote projects with a focus on accuracy, confidentiality, and on-time delivery. Supported data pipelines for training natural language processing models spanning various domains. • Delivered labeling, transcription, and evaluation for NLP tasks. • Maintained independent client communication and scheduling. • Adapted to diverse project requirements and datasets. • Provided expertise for multiple AI and language data initiatives.

Offered freelance data annotation, transcription, translation, and content evaluation services for AI training datasets. Managed end-to-end remote projects with a focus on accuracy, confidentiality, and on-time delivery. Supported data pipelines for training natural language processing models spanning various domains. • Delivered labeling, transcription, and evaluation for NLP tasks. • Maintained independent client communication and scheduling. • Adapted to diverse project requirements and datasets. • Provided expertise for multiple AI and language data initiatives.

2017 - Present

Transcriber — Sigma.ai

OtherAudioTranscription

Responsible for transcribing multilingual audio content for AI speech recognition datasets. Ensured high linguistic accuracy in varying acoustic and accent environments. Maintained dataset formatting and passed rigorous quality reviews to ensure data integrity. • Managed transcription of diverse audio samples. • Handled accents, noise, and audio quality variation effectively. • Adhered to quality and formatting guidelines strictly. • Contributed to datasets for AI and speech model training.

Responsible for transcribing multilingual audio content for AI speech recognition datasets. Ensured high linguistic accuracy in varying acoustic and accent environments. Maintained dataset formatting and passed rigorous quality reviews to ensure data integrity. • Managed transcription of diverse audio samples. • Handled accents, noise, and audio quality variation effectively. • Adhered to quality and formatting guidelines strictly. • Contributed to datasets for AI and speech model training.

2024 - 2024

Data Annotator — Lionbridge Technologies

LionbridgeTextEntity Ner Classification

Performed comprehensive data annotation tasks including text classification, sentiment labeling, entity tagging, and content categorization. Interpreted complex annotation guidelines to ensure labeling consistency across the dataset. Collaborated with project reviewers to enhance accuracy and reliability of the annotated data. • Tagged named entities and categorized textual content. • Labeled sentiment, topics, and other classification features. • Maintained annotation quality and adherence to standards. • Worked remotely on diverse datasets for model development.

Performed comprehensive data annotation tasks including text classification, sentiment labeling, entity tagging, and content categorization. Interpreted complex annotation guidelines to ensure labeling consistency across the dataset. Collaborated with project reviewers to enhance accuracy and reliability of the annotated data. • Tagged named entities and categorized textual content. • Labeled sentiment, topics, and other classification features. • Maintained annotation quality and adherence to standards. • Worked remotely on diverse datasets for model development.

2021 - 2023

Translator — Appen

AppenText

Translated datasets and digital content from English into French and Spanish for AI multilingual model training. Ensured accuracy, contextual meaning, and cultural adaptation in all translations performed. Supported data preparation for international AI projects requiring linguistic localization. • Translated data across multiple languages. • Maintained linguistic and cultural fidelity in content. • Facilitated global dataset development workflows. • Assisted in multilingual AI dataset creation and validation.

Translated datasets and digital content from English into French and Spanish for AI multilingual model training. Ensured accuracy, contextual meaning, and cultural adaptation in all translations performed. Supported data preparation for international AI projects requiring linguistic localization. • Translated data across multiple languages. • Maintained linguistic and cultural fidelity in content. • Facilitated global dataset development workflows. • Assisted in multilingual AI dataset creation and validation.

2019 - 2020

Education

Work History