Key Skills

Freelancer Overview

I am an experienced data annotation specialist with over five years of hands-on expertise delivering high-quality labeled datasets for computer vision, NLP, and audio machine learning projects. My work spans diverse domains such as telecommunications, fintech, logistics, and autonomous driving, where I have partnered with leading Kenyan technology companies to optimize datasets and directly improve model performance. I excel in annotation schema design, quality assurance, and workflow optimization, and have driven measurable advances like a 16% increase in object detection mAP and significant improvements in NER F1 scores through structured relabeling and rigorous quality control. I am highly skilled in developing and version-controlling annotation guidelines, conducting error analysis, and collaborating cross-functionally with ML engineers and data scientists to align annotation processes with business goals. My strong attention to detail, documentation practices, and commitment to mentoring team members ensure consistent, production-ready datasets tailored to local contexts and complex use cases.

Labeling Experience

Education

Work History