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shadrack cheruiyot

@shadrackcheruiyot1

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Data annotation specialist driving high-quality AI training data and model performance.

United States

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What I'm looking for

I seek part-time remote roles focused on data quality and AI training pipelines, where I can lead annotation efforts, improve data accuracy, and collaborate with ML teams to optimize model performance.

I am a results-driven Data Science professional with over five years’ experience in data annotation, evaluation, and AI model preparation. I lead annotation teams, implemented guidelines that cut error rates by 35%, and achieved 98% QA accuracy across 50,000+ annotated items monthly while collaborating closely with ML engineers to improve model outcomes.

I have strong technical skills in Python, SQL, R, and data tools including Pandas, NumPy, Scikit-learn, Tableau and Power BI, and have performed large-scale data cleaning and preprocessing on datasets of 500K+ records. I hold relevant certifications such as Google Data Analytics Professional Certificate and Microsoft Certified: Data Analyst Associate, and I pursue roles that emphasize data quality optimization, AI ethics, and NLP.

Experience

Work history, roles, and key accomplishments

Current

Senior Data Annotation Specialist

Current

DataTech Solutions

Mar 2022 - Present (3 years 11 months)

Led a team of 8 annotators to label and categorize text, image, and audio datasets, achieving 98% QA accuracy and reducing annotation error rates by 35% while processing 50,000+ data points monthly.

Data Annotation Quality Assurance Python SQL Annotations Image Labeling Audio Transcription

Data Quality Analyst

AI Innovations Corp

Jun 2020 - Feb 2022 (1 year 8 months)

Performed comprehensive data evaluation and preprocessing for AI training datasets (500K+ records), executed pairwise comparisons and ranking tasks, and produced reports that improved data quality for model training.

Data Evaluation data preprocessing Python SQL Reporting Pairwise Comparisons Data Quality

Education

Degrees, certifications, and relevant coursework

Ohio University

Bachelor of Science, Data Science and Analytics

Grade: 3.7/4.0

Completed a Bachelor of Science in Data Science and Analytics with coursework in machine learning, data mining, statistical analysis, NLP, and computer vision; graduated May 2020.