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Justin Winfrey

Justin Winfrey

Senior AI Research Scientist – AI Training and Dataset Curation

USA flagSan Francisco, Usa
$85.00/hrExpertGoogle Cloud Vertex AI

Key Skills

Software

Google Cloud Vertex AIGoogle Cloud Vertex AI

Top Subject Matter

Natural Language Processing (NLP) and generative models
Computer vision and object detection

Top Data Types

ImageImage
DocumentDocument
TextText

Top Task Types

Text GenerationText Generation
Object DetectionObject Detection

Freelancer Overview

Senior AI Research Scientist – AI Training and Dataset Curation. Brings 16+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Internal and Proprietary Tooling. Education includes Doctor of Philosophy, Stanford University (2014) and Master of Science, MIT (2010). AI-training focus includes data types such as Text and Image and labeling workflows including Text Generation and Object Detection.

ExpertEnglish

Labeling Experience

Senior AI Research Scientist – AI Training and Dataset Curation

TextText Generation
As Senior AI Research Scientist, led the development and optimization of advanced NLP model training pipelines. Curated and labeled extensive text datasets for generative AI, improving text generation accuracy by 25%. Implemented and evaluated preprocessing, data augmentation, and annotation strategies to ensure high-quality inputs for training large language models. • Achieved significant accuracy gains through innovative labeling techniques • Oversaw dataset curation and annotation at scale • Used internal/proprietary AI training frameworks • Focused on generative AI and NLP model improvement

As Senior AI Research Scientist, led the development and optimization of advanced NLP model training pipelines. Curated and labeled extensive text datasets for generative AI, improving text generation accuracy by 25%. Implemented and evaluated preprocessing, data augmentation, and annotation strategies to ensure high-quality inputs for training large language models. • Achieved significant accuracy gains through innovative labeling techniques • Oversaw dataset curation and annotation at scale • Used internal/proprietary AI training frameworks • Focused on generative AI and NLP model improvement

2018 - Present

AI Training Specialist – Computer Vision Model Training

ImageObject Detection
Served as AI Training Specialist, developing and optimizing computer vision model training protocols. Labeled and annotated image datasets for object detection, directly leading to a 15% increase in precision. Led cross-functional efforts to integrate ethical principles into AI model training and labeling tasks. • Focused on real-time object detection applications • Reduced bias and improved model outcomes • Led production-scale data annotation projects • Used internal proprietary AI training frameworks

Served as AI Training Specialist, developing and optimizing computer vision model training protocols. Labeled and annotated image datasets for object detection, directly leading to a 15% increase in precision. Led cross-functional efforts to integrate ethical principles into AI model training and labeling tasks. • Focused on real-time object detection applications • Reduced bias and improved model outcomes • Led production-scale data annotation projects • Used internal proprietary AI training frameworks

2014 - 2018

Education

S

Stanford University

Doctor of Philosophy, Computer Science

Doctor of Philosophy
2010 - 2014
M

MIT

Master of Science, Artificial Intelligence

Master of Science
2008 - 2010

Work History

N

Nexlify AI Solutions

Senior AI Research Scientist

San Francisco
2018 - Present
D

DeepMind Innovations

AI Training Specialist

Austin
2014 - 2018