AI Data Annotation & Machine Learning Dataset Specialist

Hello! I am a professional Data Annotation and Machine Learning Specialist with extensive experience delivering high-accuracy datasets for AI models, computer vision, and NLP applications. Having successfully collaborated with global startups and tech enterprises, I specialize in transforming raw, unstructured data into premium training sets.My expertise includes precise image/video bounding boxes, semantic segmentation, polygon mapping, text classification, and LLM fine-tuning. I am highly proficient with industry-standard tools like CVAT, Roboflow, LabelImg, and Label Studio.I pride myself on meticulous data quality, strict adherence to complex guidelines, and rapid turnaround times. Let’s collaborate to power your next AI model with flawless data. Contact me today to discuss your project requirements!

Portfolio

This project showcases a compilation of high-accuracy data annotation work designed for training complex computer vision and AI models.Key Technical Elements Shown:Semantic Segmentation: High-precision pixel-level masking for autonomous vehicle tracking, mapping vehicles, pedestrians, and road infrastructures with 100% boundary accuracy.2D Bounding Boxes: Object localization and tracking across street-view data for surveillance and traffic monitoring models.Tool Proficiency: Demonstrated mastery across leading industry platforms including CVAT and Roboflow for managing diverse annotation styles (polygons, boxes, and semantic masks).

This project showcases a compilation of high-accuracy data annotation work designed for training complex computer vision and AI models.Key Technical Elements Shown:Semantic Segmentation: High-precision pixel-level masking for autonomous vehicle tracking, mapping vehicles, pedestrians, and road infrastructures with 100% boundary accuracy.2D Bounding Boxes: Object localization and tracking across street-view data for surveillance and traffic monitoring models.Tool Proficiency: Demonstrated mastery across leading industry platforms including CVAT and Roboflow for managing diverse annotation styles (polygons, boxes, and semantic masks).

My services

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Seller since Jun 2026

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Antonio_12

New

I will do data annotation and image labeling for computer vision

From $16.28

Skills

Image Recognition
DataLayer
Machine learning

Work experience

Lead Data Annotation Specialist Independent Freelancer - Since Mar 2019
Collaborated with international tech startups and AI development teams to prepare high-quality machine learning datasets. Specialized in precise 2D/3D bounding boxes, multi-class semantic segmentation, polygon mapping, and text classification for NLP