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Frederick Nogroski

AI Data Annotator / AI Trainer

USA flagAnchorage, Usa
$20.00/hrExpertLabelboxCVAT

Key Skills

Software

LabelboxLabelbox
CVATCVAT

Top Subject Matter

Computer Vision/Object Detection
Pose Estimation
General Annotation (Image, Video, Text)

Top Data Types

ImageImage
VideoVideo
AudioAudio

Top Task Types

Bounding Box
Polygon
Point Key Point
Object Detection
Text Generation

Freelancer Overview

AI Data Annotator / AI Trainer. Core strengths include Labelbox. Education includes Bachelor of Science, University of Alaska Anchorage (2019). AI-training focus includes data types such as Image and labeling workflows including Bounding Box.

ExpertEnglishPortugueseFrench

Labeling Experience

Computer Vision Data Annotation for Autonomous Driving Systems

ImageBounding Box
Annotated and processed over 500,000+ images and video frames for autonomous driving AI models, focusing on high-precision object detection and scene understanding. Applied bounding boxes, polygons, and keypoint annotations to label vehicles, pedestrians, road signs, and lane markings. Performed multi-frame object tracking across complex traffic scenarios, ensuring temporal consistency in datasets. Maintained 98–99% annotation accuracy by strictly following labeling guidelines and conducting detailed quality assurance checks. Collaborated with AI engineers to refine annotation standards, contributing to a 15% improvement in model performance. Successfully handled large-scale datasets under tight deadlines, delivering 100% on-time project completion while reducing error rates by 20% through validation processes.

Annotated and processed over 500,000+ images and video frames for autonomous driving AI models, focusing on high-precision object detection and scene understanding. Applied bounding boxes, polygons, and keypoint annotations to label vehicles, pedestrians, road signs, and lane markings. Performed multi-frame object tracking across complex traffic scenarios, ensuring temporal consistency in datasets. Maintained 98–99% annotation accuracy by strictly following labeling guidelines and conducting detailed quality assurance checks. Collaborated with AI engineers to refine annotation standards, contributing to a 15% improvement in model performance. Successfully handled large-scale datasets under tight deadlines, delivering 100% on-time project completion while reducing error rates by 20% through validation processes.

2022 - Present

Video Annotation & Object Tracking for Retail Analytics AI

VideoPolygon
Annotated and analyzed 5,000+ hours of retail surveillance video footage to support AI-driven customer behavior analysis. Applied bounding boxes and polygon annotations to track customer movement, product interactions, and in-store patterns. Performed frame-by-frame object tracking across complex scenes with multiple subjects, ensuring temporal consistency and accuracy. Achieved 97–98% annotation accuracy while maintaining high consistency across large datasets. Improved workflow efficiency by 25% through structured annotation processes and tool optimization. Contributed to reducing dataset inconsistencies by 30%, enhancing overall model training quality. Successfully delivered all assigned tasks within strict project deadlines.

Annotated and analyzed 5,000+ hours of retail surveillance video footage to support AI-driven customer behavior analysis. Applied bounding boxes and polygon annotations to track customer movement, product interactions, and in-store patterns. Performed frame-by-frame object tracking across complex scenes with multiple subjects, ensuring temporal consistency and accuracy. Achieved 97–98% annotation accuracy while maintaining high consistency across large datasets. Improved workflow efficiency by 25% through structured annotation processes and tool optimization. Contributed to reducing dataset inconsistencies by 30%, enhancing overall model training quality. Successfully delivered all assigned tasks within strict project deadlines.

2021 - 2021

Audio Data Labeling & Transcription for Speech Recognition AI

AudioTranscription
Labeled and transcribed 10,000+ audio clips for speech recognition and NLP model training. Performed accurate transcription, speaker identification, and audio classification across diverse accents and environments. Maintained 98%+ transcription accuracy by following strict linguistic and formatting guidelines. Tagged speech elements such as pauses, noise, and overlapping dialogue to improve dataset quality. Enhanced dataset usability by improving labeling consistency, reducing rework by 20%. Demonstrated strong attention to detail and ability to handle large-scale audio datasets efficiently while meeting tight deadlines.

Labeled and transcribed 10,000+ audio clips for speech recognition and NLP model training. Performed accurate transcription, speaker identification, and audio classification across diverse accents and environments. Maintained 98%+ transcription accuracy by following strict linguistic and formatting guidelines. Tagged speech elements such as pauses, noise, and overlapping dialogue to improve dataset quality. Enhanced dataset usability by improving labeling consistency, reducing rework by 20%. Demonstrated strong attention to detail and ability to handle large-scale audio datasets efficiently while meeting tight deadlines.

2020 - 2021

Education

U

University of Washington

Master of Science, Applied Mathematics

Master of Science
2017 - 2019
U

University of Alaska Anchorage

Bachelor of Science, Computer Science

Bachelor of Science
2016 - 2019

Work History

A

Alaska Department of Labor and Workforce Development

Senior Data Scientist

Anchorage
2021 - Present
N

Northern Economics, Inc.

Quantitative Data Scientist

Anchorage
2019 - 2021