Kelvin Simiyu

Key Skills

Software

Appen

Top Subject Matter

No subject matter listed

Top Data Types

Text

Top Label Types

Classification

Freelancer Overview

I have hands-on experience in data labeling and annotation, specializing in image and video annotation using tools like Labelbox, CVAT, and Label Studio. My background in optical equipment analysis and laser systems design has given me a strong understanding of image quality and defect detection, which I apply to precise and accurate data annotation tasks. I am skilled in image bounding, quality checks, and defect mitigation, and have contributed to projects focused on improving lens efficiency and detecting refraction errors. My technical expertise, combined with a strong foundation in physics, mathematics, and optical system design, enables me to deliver high-quality training data for AI and computer vision applications.

Labeling Experience

Data Labeling Job Simulation Participant

AppenTextClassification

Completed a Data Labeling Job Simulation focused on batch labeling and personally identifiable information (PII) awareness. Performed practical tasks in review, quality control, and iterative feedback within the domain. Gained hands-on exposure to best practices in data annotation workflows and data privacy considerations. • Batch labeled various text data sets for quality and accuracy • Ensured compliance with PII handling standards • Conducted multiple review and quality control cycles • Practiced iterative improvements based on feedback

Completed a Data Labeling Job Simulation focused on batch labeling and personally identifiable information (PII) awareness. Performed practical tasks in review, quality control, and iterative feedback within the domain. Gained hands-on exposure to best practices in data annotation workflows and data privacy considerations. • Batch labeled various text data sets for quality and accuracy • Ensured compliance with PII handling standards • Conducted multiple review and quality control cycles • Practiced iterative improvements based on feedback

2019

Education

Work History