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David Buckwalter

Senior Software Engineer / Data Scientist (Data Annotation Focus)

USA flagVirginia, Usa
$30.00/hrExpertLabelboxCVATSuperannotate

Key Skills

Software

LabelboxLabelbox
CVATCVAT
SuperAnnotateSuperAnnotate
Scale AIScale AI
V7 LabsV7 Labs

Top Subject Matter

Machine Learning/Data Science/NLP
Business Intelligence/Data Science
Data Annotation

Top Data Types

TextText
ImageImage
VideoVideo

Top Task Types

Data CollectionData Collection
Bounding BoxBounding Box
PolygonPolygon
SegmentationSegmentation
Point/Key PointPoint/Key Point
Object DetectionObject Detection
Text GenerationText Generation
TranscriptionTranscription
ClassificationClassification
PolylinePolyline

Freelancer Overview

Senior Software Engineer / Data Scientist (Data Annotation Focus). Brings 21+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Internal and Proprietary Tooling. Education includes Master of Science, University of Virginia (2010) and Bachelor of Science, Virginia Tech (2006). AI-training focus includes data types such as Text and labeling workflows including Data Collection.

ExpertEnglishPortugueseFrench

Labeling Experience

Speech Recognition & Audio Transcription Dataset Labeling

AudioTranscription
Annotated and transcribed diverse audio datasets for speech recognition systems, including accents, noisy environments, and multilingual content. Performed audio classification and timestamped transcription with high accuracy. Processed over 2,000 hours of audio data, ensuring quality through proofreading and validation workflows, achieving over 97% transcription accuracy.

Annotated and transcribed diverse audio datasets for speech recognition systems, including accents, noisy environments, and multilingual content. Performed audio classification and timestamped transcription with high accuracy. Processed over 2,000 hours of audio data, ensuring quality through proofreading and validation workflows, achieving over 97% transcription accuracy.

2023 - Present

Senior Software Engineer / Data Scientist (Data Annotation Focus)

TextData Collection
Managed large-scale data annotation pipelines ensuring the creation of high-quality datasets for machine learning projects. Led prompt engineering initiatives focused on improving LLM output accuracy for AI applications. Designed and deployed AI-powered applications leveraging annotated data to enhance predictive analytics and automation. • Oversaw end-to-end data labeling workflows for NLP and predictive systems • Developed and maintained annotation quality control standards • Collaborated across teams to streamline data curation processes • Supervised the aggregation and preprocessing of text-based data for model training

Managed large-scale data annotation pipelines ensuring the creation of high-quality datasets for machine learning projects. Led prompt engineering initiatives focused on improving LLM output accuracy for AI applications. Designed and deployed AI-powered applications leveraging annotated data to enhance predictive analytics and automation. • Oversaw end-to-end data labeling workflows for NLP and predictive systems • Developed and maintained annotation quality control standards • Collaborated across teams to streamline data curation processes • Supervised the aggregation and preprocessing of text-based data for model training

2018 - Present

Surveillance Video Object Tracking & Behavior Analysis

VideoObject Detection
Performed frame-by-frame annotation of surveillance footage to track human movement and detect behavioral patterns. Labeled objects across time sequences and applied temporal segmentation for activity recognition. Handled over 1,200 hours of video data while maintaining consistency across frames. Implemented QA workflows to ensure annotation precision and temporal continuity.

Performed frame-by-frame annotation of surveillance footage to track human movement and detect behavioral patterns. Labeled objects across time sequences and applied temporal segmentation for activity recognition. Handled over 1,200 hours of video data while maintaining consistency across frames. Implemented QA workflows to ensure annotation precision and temporal continuity.

2023 - 2023

Autonomous Driving Image Annotation Project

ImageBounding Box
Annotated large-scale image datasets for autonomous driving systems, including labeling vehicles, pedestrians, traffic signs, and road lanes. Used bounding boxes and semantic segmentation techniques to ensure precise object detection. Processed over 50,000 images with strict quality assurance protocols, including multi-level reviews and accuracy validation, achieving over 98% labeling accuracy.

Annotated large-scale image datasets for autonomous driving systems, including labeling vehicles, pedestrians, traffic signs, and road lanes. Used bounding boxes and semantic segmentation techniques to ensure precise object detection. Processed over 50,000 images with strict quality assurance protocols, including multi-level reviews and accuracy validation, achieving over 98% labeling accuracy.

2023 - 2023

Software Engineer (Data Annotation Workflow Improvement)

TextData Collection
Improved data annotation workflows to support business intelligence and analytics initiatives. Implemented streamlined processes that reduced labeling errors by 25% over several years. Developed automated data annotation tools to accelerate the generation of ML datasets for predictive modeling. • Built and optimized backend pipelines for text data annotation • Integrated data labeling solutions with automated reporting systems • Coordinated with analytics teams to ensure reliable dataset creation • Established quality assurance protocols for annotated data

Improved data annotation workflows to support business intelligence and analytics initiatives. Implemented streamlined processes that reduced labeling errors by 25% over several years. Developed automated data annotation tools to accelerate the generation of ML datasets for predictive modeling. • Built and optimized backend pipelines for text data annotation • Integrated data labeling solutions with automated reporting systems • Coordinated with analytics teams to ensure reliable dataset creation • Established quality assurance protocols for annotated data

2012 - 2018

Education

U

University of Virginia

Master of Science, Computer Science

Master of Science
2008 - 2010
V

Virginia Tech

Bachelor of Science, Computer Science

Bachelor of Science
2002 - 2006

Work History

T

TechNova Solutions

Senior Software Engineer / Data Scientist

Virginia
2018 - Present
B

Blue Ridge Analytics

Software Engineer

Virginia
2012 - 2017