Okafor Chukwuemeka

Key Skills

Software

Remotasks

Appen

Toloka

Scale AI

Top Subject Matter

Computer Vision

Natural Language Processing

LLM/AI Model Evaluation

Top Data Types

Image

Text

Audio

Document

Top Task Types

Bounding Box

Classification

RLHF

Transcription

Freelancer Overview

Freelance Data Annotation Specialist (Image Labeling, Bounding Box). Core strengths include Remotasks, Appen, and Toloka. Education includes Bachelor of Science, Ebonyi State University (2025). AI-training focus includes data types such as Image, Text, and Audio and labeling workflows including Bounding Box, Classification, and RLHF.

Labeling Experience

Freelance RLHF/AI Feedback Evaluator

TolokaTextRLHF

I provided reinforcement learning with human feedback (RLHF) by rating AI-generated outputs and structured model evaluations. Assignments included reviewing AI responses, supplying feedback for model fine-tuning, and supporting LLM advancement. Work was executed for several annotation and model training projects remotely. • Supplied RLHF ratings and feedback on model outputs. • Participated in AI safety and policy compliance moderation. • Used structured evaluation templates and custom tools. • Contributed to improved performance for AI-driven products.

I provided reinforcement learning with human feedback (RLHF) by rating AI-generated outputs and structured model evaluations. Assignments included reviewing AI responses, supplying feedback for model fine-tuning, and supporting LLM advancement. Work was executed for several annotation and model training projects remotely. • Supplied RLHF ratings and feedback on model outputs. • Participated in AI safety and policy compliance moderation. • Used structured evaluation templates and custom tools. • Contributed to improved performance for AI-driven products.

2022 - Present

Freelance Data Annotator (Audio Transcription)

Scale AIAudioTranscription

I completed audio transcription tasks as part of freelance data annotation projects. Tasks included accurately transcribing spoken content into structured text for machine learning dataset preparation. I demonstrated attention to detail and consistency across diverse audio datasets. • Transcribed audio files for speech recognition data. • Ensured quality and accuracy in all transcript deliverables. • Handled various accents and dialects as needed. • Delivered results within client-specified timelines.

I completed audio transcription tasks as part of freelance data annotation projects. Tasks included accurately transcribing spoken content into structured text for machine learning dataset preparation. I demonstrated attention to detail and consistency across diverse audio datasets. • Transcribed audio files for speech recognition data. • Ensured quality and accuracy in all transcript deliverables. • Handled various accents and dialects as needed. • Delivered results within client-specified timelines.

2019 - Present

Freelance Data Annotation Specialist (Text Classification)

AppenTextClassification

I conducted text classification and tagging for NLP tasks for multiple clients via freelance platforms. Responsibilities included intent recognition, sentiment labeling, and text tagging for natural language processing projects. I handled various text data in English and Nigerian Pidgin contexts. • Performed entity and sentiment classification on text data. • Worked with large volumes of text for diverse business cases. • Utilized platform-specific tools for annotation as required. • Maintained a high standard of accuracy and timely delivery.

I conducted text classification and tagging for NLP tasks for multiple clients via freelance platforms. Responsibilities included intent recognition, sentiment labeling, and text tagging for natural language processing projects. I handled various text data in English and Nigerian Pidgin contexts. • Performed entity and sentiment classification on text data. • Worked with large volumes of text for diverse business cases. • Utilized platform-specific tools for annotation as required. • Maintained a high standard of accuracy and timely delivery.

2019 - Present

Freelance Data Annotation Specialist (Image Labeling, Bounding Box)

RemotasksImageBounding Box

As a freelance data annotation specialist, I performed extensive image labeling with bounding box annotations for AI-focused clients. Over 6+ years, I worked with remote platforms and delivered more than 500 high-quality projects. My tasks involved annotating image datasets for object detection and computer vision model training. • Executed bounding box labeling for objects in diverse image datasets. • Consistently maintained annotation accuracy above 96%. • Used proprietary and commercial labeling tools across platforms. • Supported a variety of international clients with quality results.

As a freelance data annotation specialist, I performed extensive image labeling with bounding box annotations for AI-focused clients. Over 6+ years, I worked with remote platforms and delivered more than 500 high-quality projects. My tasks involved annotating image datasets for object detection and computer vision model training. • Executed bounding box labeling for objects in diverse image datasets. • Consistently maintained annotation accuracy above 96%. • Used proprietary and commercial labeling tools across platforms. • Supported a variety of international clients with quality results.

2019 - Present

Education

Work History