Chloe E.

Key Skills

Software

Labelbox

Scale AI

CVAT

Supervisely

Other

Appen

Lionbridge

Top Subject Matter

Computer Vision

Image Classification

Speech Recognition

Top Data Types

Image

Audio

Video

Text

Top Task Types

Bounding Box

Transcription

Tracking

Text Generation

Freelancer Overview

AI Data Annotation Specialist & QA Lead. Brings 3+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Labelbox, Scale AI, and CVAT. Education includes Bachelor of Science, Self‑Directed & Online Programs (2023) and High School Diploma, N/A (2021). AI-training focus includes data types such as Image, Audio, and Video and labeling workflows including Bounding Box, Transcription, and Tracking.

Labeling Experience

Programmer & AI Content Creator

OtherTextText Generation

I cleaned, normalized, and preprocessed more than 10,000 text entries for AI development use cases. Tasks included annotation format conversion among COCO, YOLO, and JSON, leveraging Python and pandas to automate the workflow. Contributed to an 85% reduction in time through efficient data preprocessing pipelines. • Developed scripts for multi-format label annotation conversion. • Automated text preprocessing with Python and pandas. • Ensured annotation consistency and compatibility for AI pipelines. • Integrated REST APIs to streamline dataset preparation.

2022 - Present

Data Labeller & Quality Rater

AppenText

As a Data Labeller & Quality Rater on global rating projects, I evaluated search relevance, POI data, ads, and visual content for datasets. My work maintained high inter-rater reliability and consistency across thousands of rating tasks, supporting model fine-tuning. Comprehensive rationale documentation was provided for each labeling decision. • Rated search results, POIs, and ads for relevance and quality. • Performed image/video quality assessment and descriptive accuracy checks. • Consistently applied complex labeling rubrics. • Authored detailed justifications for every assessment to guide model updates.

2022 - Present

AI Data Annotation Specialist & QA Lead

Scale AIText

I performed over 600 weekly LLM response evaluations, reviewing AI-generated responses for relevance, factuality, and safety. Tasks included side-by-side pairwise comparison and structured feedback to enhance large language model quality. Maintained rigorous inter-rater reliability throughout the ongoing project. • Rated LLM-generated text for safety, factual correctness, and user relevance. • Conducted pairwise comparison tasks to assess model improvement. • Documented comprehensive feedback for model fine-tuning and calibration. • Engaged in weekly QA review cycles supporting continuous improvement.

2020 - Present

AI Data Annotation Specialist & QA Lead

CVATVideoTracking

I labeled over 600 hours of video data using frame tracking and action recognition techniques. My tasks required detailed frame-by-frame annotation for training video classification and tracking models. Quality control procedures reduced error rates in delivered datasets by 28%. • Applied frame tracking and action classification in video labeling. • Ensured consistency and reliability in each annotated sequence. • Contributed to significant error reduction through rigorous QA. • Utilized leading labeling platforms supporting video annotation.

2020 - Present

AI Data Annotation Specialist & QA Lead

AppenAudioTranscription

I conducted large-scale audio transcription projects, processing more than 2,500 hours of English audio data. Duties included speaker identification, sentiment labeling, and precise timestamp alignment for training speech and sentiment models. Adhered to stringent accuracy standards to maintain dataset integrity. • Transcribed, segmented, and labeled audio files for AI training. • Provided speaker ID and sentiment annotation. • Maintained high consistency and accuracy in transcription deliverables. • Collaborated with QA processes to calibrate audio annotation guidelines.

2020 - Present

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Education

Work History