Chisom Onwuchekwa

Key Skills

Software

Labelbox

Internal/Proprietary Tooling

Top Subject Matter

Computer Vision and Natural Language Processing

Legal Services & Contract Review

Regulatory Compliance & Risk Analysis

Top Data Types

Image

Text

Document

Top Task Types

Bounding Box

Classification

Freelancer Overview

Detail-oriented Data Annotation Specialist with 3+ years of experience delivering high-quality labeled datasets for machine learning and AI applications. Skilled in image, text, audio, and video annotation with a strong focus on accuracy, consistency, and meeting tight deadlines. Experienced in collaborating with cross-functional teams, maintaining annotation guidelines, and improving data quality pipelines. My Background in frontend engineering enhances my ability to work with data tools, visualization systems, and structured workflows.

Labeling Experience

Data Annotation Specialist (Freelance / Remote)

LabelboxImageBounding Box

As a Data Annotation Specialist, I annotated large-scale datasets for computer vision and natural language processing applications. My work included bounding box, segmentation, and keypoint labeling to support AI development. I maintained high accuracy and performed QA to improve dataset reliability. • Labeled over 500,000 data points across multiple domains • Collaborated with cross-functional teams to ensure annotation consistency • Utilized software like Labelbox, CVAT, Supervisely, and Scale AI • Specialized in both image and text annotation for AI/ML projects

As a Data Annotation Specialist, I annotated large-scale datasets for computer vision and natural language processing applications. My work included bounding box, segmentation, and keypoint labeling to support AI development. I maintained high accuracy and performed QA to improve dataset reliability. • Labeled over 500,000 data points across multiple domains • Collaborated with cross-functional teams to ensure annotation consistency • Utilized software like Labelbox, CVAT, Supervisely, and Scale AI • Specialized in both image and text annotation for AI/ML projects

2023 - Present

Data Labeling | Standard AI (Contract / Remote)

LabelboxImageClassification

As a Data Labeling contractor at Standard AI, I was responsible for reviewing and validating image and text annotations. I developed guidelines to enhance labeling consistency and quality compliance. Training new annotators and supporting team onboarding were essential contributions. • Performed QA on annotated datasets for standardization • Created documentation to streamline annotation processes • Ensured labeling output met strict accuracy requirements • Helped reduce errors and onboarding time for new annotators

As a Data Labeling contractor at Standard AI, I was responsible for reviewing and validating image and text annotations. I developed guidelines to enhance labeling consistency and quality compliance. Training new annotators and supporting team onboarding were essential contributions. • Performed QA on annotated datasets for standardization • Created documentation to streamline annotation processes • Ensured labeling output met strict accuracy requirements • Helped reduce errors and onboarding time for new annotators

2022 - 2022

Junior Data Annotator (Freelance / Remote)

LabelboxImageClassification

As a Junior Data Annotator, I contributed to large-scale image and text labeling projects to generate structured training data. I completed image classification and text tagging tasks with a strong focus on throughput and detail. My diligent approach supported pipeline efficiency and annotation quality. • Executed high-volume image classification assignments • Tagged text for classification and entity recognition • Maintained throughput while upholding quality standards • Gained familiarity with multiple annotation tools

As a Junior Data Annotator, I contributed to large-scale image and text labeling projects to generate structured training data. I completed image classification and text tagging tasks with a strong focus on throughput and detail. My diligent approach supported pipeline efficiency and annotation quality. • Executed high-volume image classification assignments • Tagged text for classification and entity recognition • Maintained throughput while upholding quality standards • Gained familiarity with multiple annotation tools

2021 - 2022

Education

Work History