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C

Chinecherem Johnmark

AI Data Annotator/Trainer

ExpertLabelboxCVATSuperannotate

Key Skills

Software

LabelboxLabelbox
CVATCVAT
SuperAnnotateSuperAnnotate
Scale AIScale AI
Label StudioLabel Studio
ProdigyProdigy
Snorkel AISnorkel AI

Top Subject Matter

Machine Learning/AI Model Training Datasets

Top Data Types

ImageImage

Top Task Types

Bounding Box

Freelancer Overview

AI Data Annotator/Trainer. Core strengths include Labelbox, CVAT, and SuperAnnotate. Education includes Bachelor of Science, UNN (2024) and West African Senior School Certificate, Saint Charles College, Onitsha (2017). AI-training focus includes data types such as Image and labeling workflows including Bounding Box.

Expert

Labeling Experience

Labelbox

AI Data Annotator/Trainer

LabelboxImageBounding Box
As an AI Data Annotator/Trainer, I was responsible for labeling and curating high-quality datasets across computer vision, NLP, multimodal, and LLM fine-tuning projects. I consistently achieved high annotation accuracy and strong inter-annotator agreement scores. My work included following complex guidelines and identifying edge cases to ensure data quality. • Labeled 5,000+ data points including images, text, and multimodal inputs. • Performed RLHF-style preference ranking, safety evaluations, and feedback on LLM outputs. • Maintained daily throughput of up to 3,000 annotations/day with high-quality standards. • Utilized tools such as Labelbox, CVAT, SuperAnnotate, Scale AI, Label Studio, Prodigy, Amazon SageMaker Ground Truth, VGG Image Annotator, and Snorkel.

As an AI Data Annotator/Trainer, I was responsible for labeling and curating high-quality datasets across computer vision, NLP, multimodal, and LLM fine-tuning projects. I consistently achieved high annotation accuracy and strong inter-annotator agreement scores. My work included following complex guidelines and identifying edge cases to ensure data quality. • Labeled 5,000+ data points including images, text, and multimodal inputs. • Performed RLHF-style preference ranking, safety evaluations, and feedback on LLM outputs. • Maintained daily throughput of up to 3,000 annotations/day with high-quality standards. • Utilized tools such as Labelbox, CVAT, SuperAnnotate, Scale AI, Label Studio, Prodigy, Amazon SageMaker Ground Truth, VGG Image Annotator, and Snorkel.

2021 - Present

Education

U

UNN

Bachelor of Science, Political Science

Bachelor of Science
2020 - 2024
S

Saint Charles College, Onitsha

West African Senior School Certificate, General Secondary Education

West African Senior School Certificate
2011 - 2017

Work History

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Chinecherem J. hasn’t added any Work History to their OpenTrain profile yet.