Open to opportunities

Frank Istifanus

@frankistifanus

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AI Data Annotation and Quality Specialist optimizing datasets and LLM performance.

Nigeria

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What I'm looking for

I seek roles focused on dataset curation, LLM evaluation, and prompt engineering within teams emphasizing AI safety, collaboration, and measurable model improvement.

I am an AI Data Annotation & Quality Specialist with hands-on experience labeling, auditing, and structuring large text, image, and audio datasets to improve model performance, accuracy, and safety. I design annotation workflows, perform LLM evaluation with scoring rubrics, and collaborate with ML teams to close data gaps and reduce labeling inconsistencies.

My background includes creating prompt templates and test cases that boosted task performance, developing instructional and synthetic datasets for training and validation, and documenting error patterns that guided fine-tuning cycles. I combine technical tooling (Labelbox, Scale AI, Toloka, HuggingFace, OpenAI Playground) with rigorous QA and ethical decision-making to deliver production-ready datasets.

Experience

Work history, roles, and key accomplishments

AI Data Annotation Specialist

Bluewave

Jun 2025 - Oct 2025 (4 months)

Labeled, audited, and structured large text, image, and audio datasets achieving 98–99% annotation accuracy and designed workflows that reduced labeling inconsistencies by 30%. Performed LLM output evaluation and collaborated with ML teams to close data gaps and improve model readiness.

Data Annotation Quality Assurance LLM Output Evaluation Prompt Testing Workflow Design AI Safety

LLM Evaluation Associate

AlignTest

Jan 2024 - May 2025 (1 year 4 months)

Created structured prompt templates and test cases that improved model task performance by 40% and evaluated responses for relevance, clarity, safety, and factual accuracy to inform fine-tuning cycles.

Prompt Engineering Documentation Performance Testing

Content/Technical Writer

StarDigits

May 2023 - Dec 2024 (1 year 7 months)

Developed instructional datasets, user guides, and structured explanations for AI/LLM training and created synthetic datasets to support testing and validation, improving model comprehension of technical topics.

Technical Writing Instructional Design Synthetic Data Validation

Education

Degrees, certifications, and relevant coursework

University of Osun

Attended the University of Osun; specific degree and dates not provided in the input.

University of Ibadan

Bachelor of Science, Computer Science

Bachelor of Science in Computer Science; coursework included Machine Learning Basics, NLP Fundamentals, Data Analytics, and Human–Computer Interaction.