Chisom Okoli

Key Skills

Software

Appen

Mercor

OneForma

Top Subject Matter

No subject matter listed

Top Data Types

Audio

Computer Code Programming

Document

Geospatial Tiled Imagery

Image

Video

Top Label Types

Action Recognition

Audio Recording

Bounding Box

Data Collection

Evaluation Rating

Mapping

Point Key Point

Prompt Response Writing SFT

Question Answering

Segmentation

Text Generation

Text Summarization

Transcription

Freelancer Overview

I am a data scientist with hands-on experience in data annotation, labeling, and AI training data, particularly in search engine evaluation and e-commerce domains. My work at Appen involved annotating and performing quality assurance on search results and AI model outputs, where I applied detailed guidelines and provided structured feedback to optimize relevance, safety, and accuracy. I have also contributed to AI-driven product recommendation systems by validating product data and assessing user experiences. With a background in linguistics and data science, I am skilled in prompt engineering, response analysis, and data analysis. I am committed to delivering high-quality results on time and am passionate about exploring the intersection of language, artificial intelligence, and technology.

Labeling Experience

Data Annotator Generalist

AppenAudioQuestion AnsweringTranslation Localization

I contributed to data labeling projects on Appen, focusing on annotating text, images, and audio to train AI models. My tasks included categorization, sentiment analysis, and entity tagging, ensuring accuracy through strict quality guidelines. The projects varied in size, from small pilot datasets to large-scale labeling efforts, with consistent adherence to quality measures and productivity standards.

I contributed to data labeling projects on Appen, focusing on annotating text, images, and audio to train AI models. My tasks included categorization, sentiment analysis, and entity tagging, ensuring accuracy through strict quality guidelines. The projects varied in size, from small pilot datasets to large-scale labeling efforts, with consistent adherence to quality measures and productivity standards.

2023 - 2025

Data Annotator Generalist

AppenVideoBounding BoxPoint Key Point

I contributed to data labeling projects on Appen, focusing on annotating text, images, and audio to train AI models. My tasks included categorization, sentiment analysis, and entity tagging, ensuring accuracy through strict quality guidelines. The projects varied in size, from small pilot datasets to large-scale labeling efforts, with consistent adherence to quality measures and productivity standards.

I contributed to data labeling projects on Appen, focusing on annotating text, images, and audio to train AI models. My tasks included categorization, sentiment analysis, and entity tagging, ensuring accuracy through strict quality guidelines. The projects varied in size, from small pilot datasets to large-scale labeling efforts, with consistent adherence to quality measures and productivity standards.

2023 - 2025

Education

Work History