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Ukachi Ugochukwu

Ukachi Ugochukwu

AI Data Annotator - NLP Systems

NIGERIA flag
Makogi, Nigeria
ExpertAppenCVATOneforma

Key Skills

Software

AppenAppen
CVATCVAT
OneFormaOneForma

Top Subject Matter

No subject matter listed

Top Data Types

ImageImage

Top Label Types

Data Collection

Freelancer Overview

I am a detail-oriented AI data annotator and model training specialist with several years of hands-on experience supporting large language model (LLM) development and reinforcement learning workflows. My expertise lies in annotating and evaluating high volumes of NLP training data, including tasks such as named entity recognition (NER), sentiment and intent classification, and complex error correction. I consistently deliver datasets with a 98–100% quality acceptance rate, thanks to my native-level English proficiency and strong command of grammar, syntax, and natural phrasing. I am adept at applying structured rubrics, providing constructive feedback to improve AI alignment, and ensuring strict compliance with data integrity and confidentiality standards. My background in computer science and experience with linguistic quality assurance enable me to contribute effectively to projects focused on conversational AI and NLP system refinement.

ExpertEnglish

Labeling Experience

CVAT

Data labelling

CVATImageData Collection
Collected images of people and animals interacting with certain objects and labelled them according to the given rules.

Collected images of people and animals interacting with certain objects and labelled them according to the given rules.

2025

Education

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Work History

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