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I am a detail-oriented AI and Machine Learning freelancer focused on data annotation, AI training, and prompt engineering. I enjoy turning complex data into high-quality labeled datasets and collaborating with teams to improve model performance. With hands-on experience in image, audio, and video annotation, transcription, and dataset collection, I help clients scale AI projects while maintaining accuracy and rigorous quality assurance.…I am a detail-oriented AI and Machine Learning freelancer focused on data annotation, AI training, and prompt engineering. I enjoy turning complex data into high-quality labeled datasets and collaborating with teams to improve model performance. With hands-on experience in image, audio, and video annotation, transcription, and dataset collection, I help clients scale AI projects while maintaining accuracy and rigorous quality assurance.

CATHRINE NJERI

AI Engineer, Data Scientist, Data Annotator, +2

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I am a detail-oriented AI and Machine Learning freelancer focused on data annotation, AI training, and prompt engineering. I enjoy turning complex data into high-quality labeled datasets and collaborating with teams to improve model performance. With hands-on experience in image, audio, and video annotation, transcription, and dataset collection, I help clients scale AI projects while maintaining accuracy and rigorous quality assurance.…I am a detail-oriented AI and Machine Learning freelancer focused on data annotation, AI training, and prompt engineering. I enjoy turning complex data into high-quality labeled datasets and collaborating with teams to improve model performance. With hands-on experience in image, audio, and video annotation, transcription, and dataset collection, I help clients scale AI projects while maintaining accuracy and rigorous quality assurance.

Available to hire

I am a detail-oriented AI and Machine Learning freelancer focused on data annotation, AI training, and prompt engineering. I enjoy turning complex data into high-quality labeled datasets and collaborating with teams to improve model performance.

With hands-on experience in image, audio, and video annotation, transcription, and dataset collection, I help clients scale AI projects while maintaining accuracy and rigorous quality assurance.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Swahili

Fluent

Kikuyu, Gikuyu

Fluent

Spanish; Castilian

Beginner

Work Experience

Freelance AI Trainer & Data Annotation Specialist

January 1, 2024 - Present

Worked on AI training and prompt evaluation projects. Performed image, audio, and video annotation for AI datasets. Collected and organized speech, audio, and vision datasets. Conducted transcription and quality assurance tasks. Supported AI model development using machine learning tools and frameworks.