Peter Kimani
@peterkimani5
Senior data annotator specializing in AI training data quality and process optimization.
KenyaWhat I'm looking for
I am a senior data annotator with extensive experience labeling images, text, and audio for AI model training, and a Bachelor of Computer Science from Saint Paul University Limuru, Kenya.
I have annotated hundreds of thousands of data entries across platforms such as Labelbox and Supervisely, worked on projects for major clients, and driven measurable improvements in model accuracy, throughput, and error reduction.
I train and mentor annotators, develop annotation guidelines and tracking systems, and collaborate with cross-functional teams to translate data insights into actionable improvements for product and research teams.
Experience
Work history, roles, and key accomplishments
APAnnotated 700+ images, text, and audio items across 500+ projects for major clients (including Google and Amazon), improving dataset quality and reducing error rates by 20% through QA processes and guideline development.
Senior Data Annotator
Toloka
Jun 2020 - Jan 2021 (7 months)
Led annotation projects for sentiment analysis, image classification, and speech recognition; trained new annotators and improved model performance through high-quality labels and process enhancements.
Labeled 1,200+ visual items for object detection and segmentation, refined annotation protocols, and contributed processing improvements that accelerated data retrieval and increased actionable insights by 25%.
Education
Degrees, certifications, and relevant coursework
Saint Paul University Limuru
Bachelor of Computer Science, Computer Science
Bachelor of Computer Science from Saint Paul University Limuru focused on core computing principles and applications.
Tech stack
Software and tools used professionally
Availability
Location
KenyaAuthorized to work in
Job categories
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