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David Nnaji

David Nnaji

AI Trainer / Content Evaluator (Business Manager at DainzBooks)

Nigeria flagEnugu, Nigeria
$25.00/hrEntry LevelInternal Proprietary ToolingDon T Disclose

Key Skills

Software

Internal/Proprietary Tooling
Don't disclose

Top Subject Matter

Business Domain Expertise
Financial Compliance & Risk Analysis
Operations Domain Expertise

Top Data Types

TextText
DocumentDocument
ImageImage

Top Task Types

Prompt + Response Writing (SFT)Prompt + Response Writing (SFT)
Text GenerationText Generation
Text SummarizationText Summarization
Fine-tuningFine-tuning
TranscriptionTranscription

Freelancer Overview

AI Trainer / Content Evaluator (Business Manager at DainzBooks). Brings 19+ years of professional experience across legal operations, contract review, compliance, and structured analysis. Core strengths include Internal and Proprietary Tooling. Education includes Bachelor of Science, University of Nigeria (2015). AI-training focus includes data types such as Text and labeling workflows including Evaluation, Rating, and Prompt + Response Writing (SFT).

Entry LevelEnglishIgbo

Labeling Experience

AI Trainer / Content Evaluator (Business Manager at DainzBooks)

Text
Served as an AI trainer responsible for rating, evaluating, and quality-assuring written business and operational content for accuracy and clarity. Applied structured rubrics and domain guidelines to assess long-form reports, financial forecasts, and operational analyses. Synthesized multiple business data sources into coherent, structured narrative outputs tailored for AI model evaluation and training. • Consistently applied annotation standards at scale to maintain output quality. • Collaborated cross-functionally to interpret requirements for AI-centered tasks. • Focused on business, finance, and operations management subject areas. • Used reporting and documentation software to simulate platform annotation workflows.

Served as an AI trainer responsible for rating, evaluating, and quality-assuring written business and operational content for accuracy and clarity. Applied structured rubrics and domain guidelines to assess long-form reports, financial forecasts, and operational analyses. Synthesized multiple business data sources into coherent, structured narrative outputs tailored for AI model evaluation and training. • Consistently applied annotation standards at scale to maintain output quality. • Collaborated cross-functionally to interpret requirements for AI-centered tasks. • Focused on business, finance, and operations management subject areas. • Used reporting and documentation software to simulate platform annotation workflows.

2018 - Present

AI Training Content Developer (ICT Trainee at Afrihub ICT Centre)

TextPrompt Response Writing SFT
Created and delivered structured ICT training materials and evaluated learner-generated content for relevance, accuracy, and adherence to guidelines. Provided targeted written feedback to improve quality and fill knowledge gaps, simulating data annotation and supervised fine-tuning processes. Developed original prompts and responses aligned to measurable objectives for AI training domains. • Focused on ICT concepts, digital skills, and computer literacy. • Produced reports evaluating learning outcomes for annotation benchmarks. • Practiced structured output evaluation and gap-filling tasks. • Used educational and content development platforms for delivery.

Created and delivered structured ICT training materials and evaluated learner-generated content for relevance, accuracy, and adherence to guidelines. Provided targeted written feedback to improve quality and fill knowledge gaps, simulating data annotation and supervised fine-tuning processes. Developed original prompts and responses aligned to measurable objectives for AI training domains. • Focused on ICT concepts, digital skills, and computer literacy. • Produced reports evaluating learning outcomes for annotation benchmarks. • Practiced structured output evaluation and gap-filling tasks. • Used educational and content development platforms for delivery.

2014 - 2014

Education

U

University of Nigeria

Bachelor of Science, Computer Science

Bachelor of Science
2011 - 2015

Work History

D

DainzBooks Global Ventures

Business Manager

Enugu
2018 - Present
P

Peton Chemicals Nigeria

Assistant Store Manager

Enugu
2016 - 2018