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Samuel Muchemi

@samuelmuchemi

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Experienced Data Annotation Specialist with a focus on quality assurance.

Kenya

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What I'm looking for

I am looking for a role that offers growth opportunities and values accuracy.

I am an experienced Data Annotation Specialist with a strong background in computer vision annotation, particularly in object detection and segmentation. My expertise lies in maintaining high-quality standards and optimizing annotation processes for various datasets, including images, videos, and LiDAR. I have a proven track record in quality assurance and feedback implementation, which has significantly contributed to improved data management tools.

In my role as a Data Quality Reviewer at Clutterbot, I conduct regular audits to ensure data quality and consistency, providing constructive feedback to annotators to rectify errors before final dataset submission. My previous experience at CloudFactory involved supporting machine learning and AI projects by ensuring high-quality annotated datasets across diverse industries. I am passionate about accuracy and am eager to leverage my comprehensive industry knowledge in a challenging role that offers growth opportunities.

Experience

Work history, roles, and key accomplishments

Data Quality Reviewer

Clutterbot

Apr 2025 - Present (2 months)

Conducted regular audits to ensure data quality and consistency, highlighting errors for rectification by annotators before final submission of datasets. Provided constructive feedback to data annotators on errors and inconsistencies, offering additional training and support to improve overall annotation quality.

Data Validation Data Correction Feedback Training Quality Assurance

Data Annotation | QA

CloudFactory

Sep 2020 - Present (4 years 9 months)

Annotated datasets across various industries using tools like CVAT, Dataloop, and client-owned software, applying bounding boxes, polygons, key points, and segmentation. Conducted quality control checks, peer reviews, and error resolution to maintain high accuracy in annotated datasets.

Data Annotation Quality Assurance CVAT Dataloop QGIS Object Detection Segmentation Data Loop

Sales Support & Data Analyst

AMG Realtors

Aug 2019 - Present (5 years 10 months)

Managed and maintained sales databases, ensuring accuracy and consistency while utilizing Microsoft Excel and Google Sheets for data analysis, trend identification, and forecasting. Streamlined sales operations and workflow processes to improve team productivity and assisted in automating data entry, reporting, and tracking systems.

Data Analysis Microsoft Excel Google Sheets Process Optimization Customer Support

Education

Degrees, certifications, and relevant coursework

Meru University of Science and Technology

Bachelor of Science, Statistics

Studied statistical methods, data analysis, and quantitative techniques. Gained expertise in interpreting complex datasets and applying statistical models.