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Stephen Ndubuisi

Stephen Ndubuisi

AI Data Annotation & LLM Evaluation Specialist (Freelance)

Nigeria flagRemote, Nigeria
$20.00/hrExpertOther

Key Skills

Software

Other

Top Subject Matter

Technology Policy & Product Operations
Business Domain Expertise
Education Domain Expertise

Top Data Types

TextText
DocumentDocument

Top Task Types

ClassificationClassification

Freelancer Overview

AI Data Annotation & LLM Evaluation Specialist (Freelance). Brings 8+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Other. Education includes Bachelor of Science, Computer Science, University of Benin. AI-training focus includes data types such as Text and labeling workflows including Evaluation, Rating, and Classification.

ExpertEnglish

Labeling Experience

Independent AI Model Evaluation Project

OtherText
In an independent AI Model Evaluation Project, I evaluated accuracy, bias, and factual correctness of AI-generated responses. I performed prompt testing and response rankings to assess model quality and performance. I applied robust fact-checking processes to validate outcomes and identified improvements for future model training. • Conducted test prompt writing and ranking • Documented model strengths and weaknesses • Applied source verification to ensure accuracy • Generated detailed feedback for model enhancements

In an independent AI Model Evaluation Project, I evaluated accuracy, bias, and factual correctness of AI-generated responses. I performed prompt testing and response rankings to assess model quality and performance. I applied robust fact-checking processes to validate outcomes and identified improvements for future model training. • Conducted test prompt writing and ranking • Documented model strengths and weaknesses • Applied source verification to ensure accuracy • Generated detailed feedback for model enhancements

2023 - Present

AI Data Annotation & LLM Evaluation Specialist (Freelance)

OtherText
As an AI Data Annotation & LLM Evaluation Specialist, I annotated and labeled datasets to develop machine learning and NLP models. I evaluated large language model outputs for accuracy, relevance, bias, and factual consistency. I performed response ranking and intent classification, and validated AI-generated content through structured web research and quality assurance. • Executed prompt evaluation and model output ranking tasks • Applied annotation guidelines across multiple domains • Conducted fact verification and dataset validation • Maintained high-quality, reliable training datasets

As an AI Data Annotation & LLM Evaluation Specialist, I annotated and labeled datasets to develop machine learning and NLP models. I evaluated large language model outputs for accuracy, relevance, bias, and factual consistency. I performed response ranking and intent classification, and validated AI-generated content through structured web research and quality assurance. • Executed prompt evaluation and model output ranking tasks • Applied annotation guidelines across multiple domains • Conducted fact verification and dataset validation • Maintained high-quality, reliable training datasets

2020 - Present

Research, Data Entry & Content Analysis Specialist (Freelance)

OtherTextClassification
In the role of Research, Data Entry & Content Analysis Specialist, I contributed to AI training projects by preparing and classifying datasets. I analyzed user queries and intent to improve content relevance and accuracy. I supported data preparation tasks essential for AI model development and evaluation. • Performed structured web research and dataset organization • Conducted quality assurance checks on labeled data • Assisted in dataset structuring and classification • Improved data accuracy for research analytics

In the role of Research, Data Entry & Content Analysis Specialist, I contributed to AI training projects by preparing and classifying datasets. I analyzed user queries and intent to improve content relevance and accuracy. I supported data preparation tasks essential for AI model development and evaluation. • Performed structured web research and dataset organization • Conducted quality assurance checks on labeled data • Assisted in dataset structuring and classification • Improved data accuracy for research analytics

2019 - Present

Education

U

University of Benin

Bachelor of Science, Computer Science

Bachelor of Science
Not specified

Work History

F

Freelance

Data Entry & Data Processing Specialist

Remote
2019 - Present
F

Freelance

Technical Writing & Documentation Specialist

Remote
2019 - Present