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Catherine Warugu

@catherinewarugu

AI Data Annotation and Evaluation Specialist at SuperAnnotate, contributing to AI data training and annotation workflows.

Kenya

Message

At SuperAnnotate, I contribute to AI data training and annotation workflows, evaluate data quality, and apply task-specific guidelines.

At BELAY, I annotated 200+ images with CVAT and maintained 98%+ accuracy across computer vision projects. I also reviewed and validated 300+ text and image annotations.

I developed annotation decision trees for ambiguous cases, reducing inter-annotator disagreement by 25%. I also implemented a systematic error-detection process that reduced dataset rework by 40%.

For LLM training, I evaluated outputs against safety policies and flagged hallucinations and policy violations. I also designed and iterated on 200+ prompt-response pairs with engineers.

Experience

Work history, roles, and key accomplishments

Current

Data Trainer

Current

SuperAnnotate

Oct 2026 - Present (1 month)

Contributes to AI data training and annotation workflows, evaluates data quality, and applies task-specific guidelines to support accurate, consistent, high-quality labeled data.

AI Data Training Data Annotation Quality Evaluation Analytical reasoning Attention To Detail

AI Data Annotation & Evaluation Specialist

BELAY

Jan 2023 - Dec 2025 (2 years 11 months)

Delivered high-fidelity labeled datasets at scale, annotated 200+ images with CVAT, and evaluated LLM outputs against safety policies. Developed decision trees to reduce inter-annotator disagreement by 25% and implemented error-detection processes that reduced dataset rework by 40%.

Data Annotation CVAT 2D Bounding Boxes LLM Evaluation safety policy assessment Quality Assurance Inter Annotator Consistency error detection Decision Trees Data Validation

Customer Service & Data Support

Brickman Properties Limited

Jun 2022 - Sep 2022 (3 months)

Resolved 100+ customer disputes with a 95%+ satisfaction rate and maintained 100% accuracy on communication records and data entry. Developed systems for tracking and organizing customer data with zero errors.

Customer Service Dispute Resolution Data Entry Data organization Communication Skills

Records and Data Support Intern

Ministry of Lands, Housing and Urban Development

Jan 2017 - Dec 2018 (1 year 11 months)

Processed and validated 300+ title deed records with 100% accuracy and organized 500+ documents, reducing data retrieval time by 50%.

Data Processing Data Validation Document Management Data organization

Education

Degrees, certifications, and relevant coursework

AIRDT Shule

Diploma, Information Technology

Diploma in Information Technology with coursework in AI fundamentals, machine learning, software engineering, database management, and data analytics.