Isabella Njenga
@isabellanjenga
AI Data Annotation and LLM Evaluator focused on high-quality labels, safety-aware review, and consistent prompt-response scoring.
KenyaWhat I'm looking for
I’m an AI Data Annotation Specialist and LLM Evaluator with a Computer Science background and a strong focus on text review, data quality assurance, and instruction-following evaluation. I assess AI-generated responses for accuracy, helpfulness, clarity, safety, and relevance, applying consistent judgment to identify edge cases and improve dataset quality.
Since 06/2022, I’ve evaluated AI outputs remotely by comparing multiple responses, flagging unclear or non-compliant content, and reviewing prompts and answers for hallucinations, unsupported claims, missing details, formatting issues, and grammar problems. In parallel (02/2023–present), I support research, data validation, categorization, and spreadsheet-based organization while improving QA accuracy by tracking recurring data issues.
I also work as a Freelance Editor/Proofreader and Content Quality Analyst (01/2024–present), strengthening my language judgment for AI response evaluation. I’m comfortable with high-volume, confidential workflows and available for remote AI training, RLHF-style evaluation, data labeling, search evaluation, content review, and dataset quality assurance projects.
Experience
Work history, roles, and key accomplishments
Freelance Editor & Proofreader
Freelance
Jan 2024 - Present (2 years 4 months)
Edited and proofread long- and short-form content, improving grammar, clarity, readability, tone, structure, and consistency while preserving meaning. Evaluated audience fit, professionalism, factual flow, and instruction adherence to support content quality and AI response evaluation.
Data Labeling & QA Specialist
Remote
Feb 2023 - Present (3 years 3 months)
Performed structured online research and data validation, checking datasets for errors, duplicates, missing information, formatting problems, and inconsistencies. Classified text by topic, intent, sentiment, relevance, and quality while following annotation guidelines to support quality assurance workflows.
AI Data Annotation Specialist
Remote
Jun 2022 - Present (3 years 11 months)
Evaluated and compared AI-generated responses for accuracy, helpfulness, completeness, tone, clarity, relevance, and instruction-following, selecting higher-quality outputs. Labeled content per project guidelines, flagged hallucinations and unsafe or non-compliant responses, and improved prompt wording and expected formatting.
Education
Degrees, certifications, and relevant coursework
Strathmore University
Bachelor's degree in Computer Science, Computer Science
Earned a bachelor's degree in Computer Science from Strathmore University in 2022, covering programming fundamentals, databases, algorithms, and data structures.
Tech stack
Software and tools used professionally
Availability
Location
KenyaAuthorized to work in
Job categories
Skills
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