Cynthia Kinzer

Key Skills

Software

Roboflow

Scale AI

Label Studio

Labelbox

Top Subject Matter

Computer Vision

Autonomous Systems

information technology systems

Top Data Types

Image

Video

Audio

Text

Document

Top Task Types

Bounding Box

Action Recognition

Transcription

Entity Ner Classification

Freelancer Overview

Freelance AI Data Annotation Specialist – Image Annotation. Core strengths include Roboflow, Scale AI, and Label Studio. Education includes Certificate, Online Professional Training (2022). AI-training focus includes data types such as Image, Video, and Audio and labeling workflows including Bounding Box, Action Recognition, and Transcription.

Labeling Experience

Freelance AI Data Annotation Specialist – Text Labeling

LabelboxTextEntity Ner Classification

I completed text data annotation and classification tasks for AI language model training projects. Work included sentiment classification, intent tagging, entity recognition, and content categorization for structured datasets. Ensured annotation guidelines were followed for high-quality NLP data. • Labeled text for sentiment, intent, and entity recognition. • Collaborated on NLP dataset preparation with Mercor and similar clients. • Reviewed and corrected datasets as needed. • Delivered high-accuracy classified text data for AI training.

I completed text data annotation and classification tasks for AI language model training projects. Work included sentiment classification, intent tagging, entity recognition, and content categorization for structured datasets. Ensured annotation guidelines were followed for high-quality NLP data. • Labeled text for sentiment, intent, and entity recognition. • Collaborated on NLP dataset preparation with Mercor and similar clients. • Reviewed and corrected datasets as needed. • Delivered high-accuracy classified text data for AI training.

2022 - Present

Freelance AI Data Annotation Specialist – Audio Labeling

Label StudioAudioTranscription

I conducted audio transcription and speech labeling, including speaker identification, timestamping, and phonetic annotation. Produced labeled speech datasets across multiple accents and environments. Ensured datasets were prepared for training speech and acoustic AI systems. • Transcribed and annotated speech audio. • Tagged background noise and speaker changes. • Worked on datasets for Babel Audio, Voices, and Silencio. • Maintained high quality standards in audio labeling.

I conducted audio transcription and speech labeling, including speaker identification, timestamping, and phonetic annotation. Produced labeled speech datasets across multiple accents and environments. Ensured datasets were prepared for training speech and acoustic AI systems. • Transcribed and annotated speech audio. • Tagged background noise and speaker changes. • Worked on datasets for Babel Audio, Voices, and Silencio. • Maintained high quality standards in audio labeling.

2022 - Present

Freelance AI Data Annotation Specialist – Video Annotation

Scale AIVideoAction Recognition

I was responsible for video annotation, labeling individual frames to identify objects, actions, and motion patterns for AI model training. Collaborated with annotation teams on high-impact dataset production. Ensured the correct labeling of large-scale video data for AI in autonomous and surveillance applications. • Frame-by-frame action labeling in video datasets. • Applied object detection and action recognition standards. • Contributed annotated data to next-generation vision models. • Participated in project review and quality assurance.

I was responsible for video annotation, labeling individual frames to identify objects, actions, and motion patterns for AI model training. Collaborated with annotation teams on high-impact dataset production. Ensured the correct labeling of large-scale video data for AI in autonomous and surveillance applications. • Frame-by-frame action labeling in video datasets. • Applied object detection and action recognition standards. • Contributed annotated data to next-generation vision models. • Participated in project review and quality assurance.

2022 - Present

Freelance AI Data Annotation Specialist – Image Annotation

RoboflowImageBounding Box

I performed image annotation using bounding boxes, polygons, keypoints, and semantic segmentation to support AI training projects. I worked with major platforms, collaborating with global teams to deliver high-quality labeled data. Met strict accuracy and project delivery requirements for large-scale computer vision datasets. • Annotated images for object detection and scene understanding. • Used Roboflow and other tools to prepare datasets. • Maintained over 98% annotation accuracy. • Validated and reviewed data for project compliance.

I performed image annotation using bounding boxes, polygons, keypoints, and semantic segmentation to support AI training projects. I worked with major platforms, collaborating with global teams to deliver high-quality labeled data. Met strict accuracy and project delivery requirements for large-scale computer vision datasets. • Annotated images for object detection and scene understanding. • Used Roboflow and other tools to prepare datasets. • Maintained over 98% annotation accuracy. • Validated and reviewed data for project compliance.

2022 - Present

Education

Work History