Alvin Maina

Key Skills

Software

Labelbox

CVAT

Supervisely

Top Subject Matter

Machine Learning Model Training

Object Detection

Speech Processing

Top Data Types

Image

Video

Audio

Top Task Types

Bounding Box

Segmentation

Point/Key Point

Tracking

Classification

Transcription

Polygon

Freelancer Overview

AI Training Specialist. Core strengths include Labelbox, YOLO, and CVAT. Education includes Bachelor of Business Information Technology, Kirinyaga University (2021) and High School Diploma, Kanjuri High School (2017). AI-training focus includes data types such as Image, Video, and Audio and labeling workflows including Bounding Box, Segmentation, and Point.

Labeling Experience

AI Training Specialist

LabelboxImageBounding BoxSegmentation

As an AI Training Specialist at ABC Data Solutions, I managed large-scale annotation projects involving images, videos, and audio. I prepared high-quality datasets for training machine learning models, focusing on object detection, tracking, and speech processing. My work included rigorous quality assurance to maintain high annotation accuracy. • Executed bounding box, segmentation mask, keypoint, and tracking annotations for video sequences • Labeled and classified speech data, including transcription and speaker identification • Utilized Labelbox for collaborative dataset management and quality control • Prepared datasets compatible with YOLO for object detection tasks

As an AI Training Specialist at ABC Data Solutions, I managed large-scale annotation projects involving images, videos, and audio. I prepared high-quality datasets for training machine learning models, focusing on object detection, tracking, and speech processing. My work included rigorous quality assurance to maintain high annotation accuracy. • Executed bounding box, segmentation mask, keypoint, and tracking annotations for video sequences • Labeled and classified speech data, including transcription and speaker identification • Utilized Labelbox for collaborative dataset management and quality control • Prepared datasets compatible with YOLO for object detection tasks

2023 - Present

Data Annotation Specialist

CVATImageBounding BoxPolygon

As a Data Annotation Specialist at TechVisionAI, I labeled and categorized over 500,000 image, video, and audio data points. My tasks included multi-object tracking, semantic segmentation, and creating dataset documentation. I contributed to optimized annotation workflows leading to reduced errors. • Annotated bounding boxes, polygons, and segmentation masks across varied datasets • Implemented multi-object tracking in video data • Generated metadata and structured documentation for datasets • Collaborated with AI and cross-functional teams to improve annotation quality

As a Data Annotation Specialist at TechVisionAI, I labeled and categorized over 500,000 image, video, and audio data points. My tasks included multi-object tracking, semantic segmentation, and creating dataset documentation. I contributed to optimized annotation workflows leading to reduced errors. • Annotated bounding boxes, polygons, and segmentation masks across varied datasets • Implemented multi-object tracking in video data • Generated metadata and structured documentation for datasets • Collaborated with AI and cross-functional teams to improve annotation quality

2021 - 2023

Education

Work History