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Elochukwu Okonkwo

Elochukwu Okonkwo

Data Analyst – AI Data Annotation Projects

Nigeria flagFCT Abuja, Nigeria
$15.00/hrIntermediateOther

Key Skills

Software

Other

Top Subject Matter

Language models
AI response evaluation
Text data

Top Data Types

TextText
DocumentDocument
ImageImage

Top Task Types

ClassificationClassification
Text GenerationText Generation
Question AnsweringQuestion Answering
Object DetectionObject Detection

Freelancer Overview

Data Analyst – AI Data Annotation Projects. Brings 2+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Other. Education includes Bachelor of Science, University of Nigeria, Nsukka (2023). AI-training focus includes data types such as Text and labeling workflows including Evaluation, Rating, and Classification.

IntermediateEnglish

Labeling Experience

Data Analyst – AI Data Annotation Projects

OtherText
Led data annotation projects for large-scale language models, maintaining high accuracy standards and applying structured labeling guidelines across diverse text datasets. Enhanced AI model performance through prompt engineering, structured dataset testing, and content quality assessment for AI-generated outputs. Conducted writing assessments and flagged inconsistencies in AI outputs to improve reliability and consistency of model responses. • Applied robust guidelines to diverse language data • Evaluated and improved AI-generated content quality • Developed and followed structured annotation protocols • Maintained data accuracy for model training and evaluation

Led data annotation projects for large-scale language models, maintaining high accuracy standards and applying structured labeling guidelines across diverse text datasets. Enhanced AI model performance through prompt engineering, structured dataset testing, and content quality assessment for AI-generated outputs. Conducted writing assessments and flagged inconsistencies in AI outputs to improve reliability and consistency of model responses. • Applied robust guidelines to diverse language data • Evaluated and improved AI-generated content quality • Developed and followed structured annotation protocols • Maintained data accuracy for model training and evaluation

2023 - 2025

Data Scientist – Annotation Workflow Management

OtherTextClassification
Managed annotation workflows and created labeling guidelines for large text datasets, ensuring consistency and adherence to quality standards. Performed large-scale data cleaning and preprocessing, utilizing results to optimize model performance and generate actionable insights. Oversaw quality control in data annotation and labeling for reproducibility and accuracy. • Designed annotation protocols for text data • Maintained workflow efficiency and standardization • Collaborated with teams for large-scale dataset projects • Focused on data quality and impact in AI training

Managed annotation workflows and created labeling guidelines for large text datasets, ensuring consistency and adherence to quality standards. Performed large-scale data cleaning and preprocessing, utilizing results to optimize model performance and generate actionable insights. Oversaw quality control in data annotation and labeling for reproducibility and accuracy. • Designed annotation protocols for text data • Maintained workflow efficiency and standardization • Collaborated with teams for large-scale dataset projects • Focused on data quality and impact in AI training

2019 - 2021

Data Analyst Intern – Data Quality & Annotation

OtherTextClassification
Conducted quality assurance on datasets with a focus on accuracy, relevance, and consistency, and assisted in SQL-based data extraction and labeling processes. Supported content evaluation and structured reporting for management insights. Ensured data integrity by applying predefined labeling protocols throughout the internship. • Performed data QA and validation checks • Utilized SQL for data extraction and annotation • Implemented standard labeling procedures • Provided support for management-focused data analysis

Conducted quality assurance on datasets with a focus on accuracy, relevance, and consistency, and assisted in SQL-based data extraction and labeling processes. Supported content evaluation and structured reporting for management insights. Ensured data integrity by applying predefined labeling protocols throughout the internship. • Performed data QA and validation checks • Utilized SQL for data extraction and annotation • Implemented standard labeling procedures • Provided support for management-focused data analysis

2016 - 2018

Education

U

University of Nigeria, Nsukka

Bachelor of Science, Human Anatomy

Bachelor of Science
2017 - 2023

Work History

U

University Of Nigeria

Research Assistant

Enugu
2022 - 2023