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Emmanuel Mba

Emmanuel Mba

AI Data Annotator, Generative AI Specialist & Prompt Engineer

Nigeria flagN/A, Nigeria
$18.00/hrIntermediateOtherData Annotation TechGoogle Cloud Vertex AI

Key Skills

Software

Other
Data Annotation TechData Annotation Tech
Google Cloud Vertex AIGoogle Cloud Vertex AI
OneFormaOneForma
Scale AIScale AI
TelusTelus
MindriftMindrift
iMeritiMerit

Top Subject Matter

Generative AI
Large Language Models
AI-generated Images

Top Data Types

TextText
ImageImage
DocumentDocument

Top Task Types

Prompt + Response Writing (SFT)Prompt + Response Writing (SFT)
ClassificationClassification
Question AnsweringQuestion Answering
Fine-tuningFine-tuning
Evaluation/RatingEvaluation/Rating
Object DetectionObject Detection
Text GenerationText Generation
Text SummarizationText Summarization
RLHFRLHF
Data CollectionData Collection

Freelancer Overview

Generative AI Specialist & Prompt Engineer. Brings 4+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Other. Education includes Bachelor of Medical Rehabilitation, University of Nigeria, Enugu Campus (2025). AI-training focus includes data types such as Text and Image and labeling workflows including Prompt + Response Writing (SFT) and Classification.

IntermediateEnglishIgboFrench

Labeling Experience

AI Data Annotator

OtherImageClassification
Evaluated AI-generated images for realism and adherence to structured guidelines using annotation standards. Identified issues in images such as lighting inconsistencies, proportions, and overall visual coherence. Provided written justifications to support annotation decisions and collaborated to improve training accuracy. • Maintained accuracy and met deadlines across extensive image datasets. • Ensured consistent application of standards by coordinating with other annotators. • Improved AI model outputs by highlighting and addressing visual anomalies. • Contributed to refining and updating annotation guidelines for quality control.

Evaluated AI-generated images for realism and adherence to structured guidelines using annotation standards. Identified issues in images such as lighting inconsistencies, proportions, and overall visual coherence. Provided written justifications to support annotation decisions and collaborated to improve training accuracy. • Maintained accuracy and met deadlines across extensive image datasets. • Ensured consistent application of standards by coordinating with other annotators. • Improved AI model outputs by highlighting and addressing visual anomalies. • Contributed to refining and updating annotation guidelines for quality control.

2025 - Present

Generative AI Specialist & Prompt Engineer

OtherTextPrompt Response Writing SFT
Designed, tested, and refined prompts to guide generative AI models for consistent and accurate outputs. Evaluated AI-generated responses for correctness, relevance, and instruction adherence, identifying issues with hallucinations, bias, or unsafe content. Provided feedback and rewrites to enhance AI alignment, working across tasks like reasoning, summarization, and classification. • Maintained high consistency and quality across large volumes of repetitive assessments. • Evaluated outputs rigorously based on structured guidelines and rubric-based scoring. • Improved model performance by systematically highlighting weaknesses and error patterns. • Delivered thorough, actionable insights to optimize AI training workflows.

Designed, tested, and refined prompts to guide generative AI models for consistent and accurate outputs. Evaluated AI-generated responses for correctness, relevance, and instruction adherence, identifying issues with hallucinations, bias, or unsafe content. Provided feedback and rewrites to enhance AI alignment, working across tasks like reasoning, summarization, and classification. • Maintained high consistency and quality across large volumes of repetitive assessments. • Evaluated outputs rigorously based on structured guidelines and rubric-based scoring. • Improved model performance by systematically highlighting weaknesses and error patterns. • Delivered thorough, actionable insights to optimize AI training workflows.

2024 - Present

Education

U

University of Nigeria, Enugu Campus

Bachelor of Medical Rehabilitation, Physiotherapy

Bachelor of Medical Rehabilitation
2020 - 2025

Work History

F

Freelance

Virtual Assistant and Data Analyst

N/A
2022 - 2025