Chigozie Opara

Key Skills

Software

Appen

Top Subject Matter

No subject matter listed

Top Data Types

Image

Top Label Types

Entity Ner Classification

Segmentation

Question Answering

Object Detection

Text Summarization

Freelancer Overview

I am an experienced AI trainer and data annotator with a strong background in evaluating and improving AI models. My work spans grading AI-generated answers for usefulness, truthfulness, and safety, as well as labeling and annotating large volumes of data to enhance natural language understanding. I have hands-on expertise in fact-checking, prompt engineering, red-teaming, and identifying AI errors, consistently maintaining high accuracy and meeting deadlines. My experience includes writing clear instructions for team members, participating in early-access AI tool testing, and providing feedback to improve usability. I am passionate about ensuring AI systems are reliable, user-friendly, and grounded in accurate information.

Labeling Experience

Content Evaluator and Image labeller

AppenImageEntity Ner ClassificationSegmentation

The project entailed sorting out images that needed labelling, comparing data sets and lookin out for common errors and minute details. there were some tasks that required my individual input and judgement which i professionally carried out.

The project entailed sorting out images that needed labelling, comparing data sets and lookin out for common errors and minute details. there were some tasks that required my individual input and judgement which i professionally carried out.

2023 - 2025

Education

Work History