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Hi there! I'm Oscar Ian Nabali, a Data Annotator and AI Operations professional based in Mombasa, Kenya. I bring over 4 years of hands-on experience in data labeling, quality assurance, and large-scale dataset preparation for machine learning. I consistently maintain 95%+ annotation accuracy in guideline-driven remote environments. I thrive in remote, cross-functional teams and enjoy turning complex data into clean, trainable assets for AI models. My focus is on rigorous QA, accurate annotation, and efficient high-volume task handling to support reliable AI systems.…Hi there! I'm Oscar Ian Nabali, a Data Annotator and AI Operations professional based in Mombasa, Kenya. I bring over 4 years of hands-on experience in data labeling, quality assurance, and large-scale dataset preparation for machine learning. I consistently maintain 95%+ annotation accuracy in guideline-driven remote environments. I thrive in remote, cross-functional teams and enjoy turning complex data into clean, trainable assets for AI models. My focus is on rigorous QA, accurate annotation, and efficient high-volume task handling to support reliable AI systems.

OSCAR IAN NABALI

Data Annotator, Data Analyst, QA Engineer, +2

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Hi there! I'm Oscar Ian Nabali, a Data Annotator and AI Operations professional based in Mombasa, Kenya. I bring over 4 years of hands-on experience in data labeling, quality assurance, and large-scale dataset preparation for machine learning. I consistently maintain 95%+ annotation accuracy in guideline-driven remote environments. I thrive in remote, cross-functional teams and enjoy turning complex data into clean, trainable assets for AI models. My focus is on rigorous QA, accurate annotation, and efficient high-volume task handling to support reliable AI systems.…Hi there! I'm Oscar Ian Nabali, a Data Annotator and AI Operations professional based in Mombasa, Kenya. I bring over 4 years of hands-on experience in data labeling, quality assurance, and large-scale dataset preparation for machine learning. I consistently maintain 95%+ annotation accuracy in guideline-driven remote environments. I thrive in remote, cross-functional teams and enjoy turning complex data into clean, trainable assets for AI models. My focus is on rigorous QA, accurate annotation, and efficient high-volume task handling to support reliable AI systems.

Available to hire

Hi there! I’m Oscar Ian Nabali, a Data Annotator and AI Operations professional based in Mombasa, Kenya. I bring over 4 years of hands-on experience in data labeling, quality assurance, and large-scale dataset preparation for machine learning. I consistently maintain 95%+ annotation accuracy in guideline-driven remote environments.

I thrive in remote, cross-functional teams and enjoy turning complex data into clean, trainable assets for AI models. My focus is on rigorous QA, accurate annotation, and efficient high-volume task handling to support reliable AI systems.

Skills

AI Data Labelling

Data Visualization

Experience Level

AI Data Labelling

Expert

Data Visualization

Intermediate

Work Experience

Data Annotator / Data Specialist at RWS Group (Freelance)

September 1, 2025 - Present

Annotate and label datasets for AI/ML training; maintain 95%+ accuracy through strict guideline adherence; perform QA reviews and manage high-volume tasks.

Back Office Officer at WATU

October 1, 2024 - Present

Validate structured data and perform routine audits.