Stephen N.

Key Skills

Software

CloudFactory

Remotasks

Toloka

Labelbox

Label Studio

Hasty

CVAT

CrowdSource

Clickworker

Scale AI

Top Subject Matter

AI model training datasets (2D/3D/4D calibration and quality review)

4D calibration annotation and review

Legal Services & Contract Review

Top Data Types

3D Sensor

Image

Text

Top Task Types

Bounding Box

Polygon

Segmentation

Classification

Cuboid

Object Detection

Data Collection

Polyline

Point/Key Point

Freelancer Overview

AI Trainer Specialist — CloudFactory & Avala AI. Brings 12+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include CloudFactory and Avala AI. Education includes Digital Skills & Freelancing Certificate, Pawatech Solutions / World Vision (Githurai) and Basic Certificate in Fitting & Turning, Christian Industrial Training Centres (2013). AI-training focus includes data types such as 3D Sensor and labeling workflows including Evaluation and Rating.

Labeling Experience

4D/3D Annotator — Avala AI

3D Sensor

4D/3D Annotator specializing in 4D calibration annotation and subsequent review for AI training data. Focuses on producing consistent, accurate calibration labels that align with project quality standards. Supports downstream model training by ensuring the reviewed annotations remain reliable. • Specialized 4D calibration annotation • Review and validate 4D/3D labeled data • Ensure consistency with dataset guidelines • Contribute to training-data reliability

2024 - Present

AI Trainer Specialist — CloudFactory & Avala AI

CloudFactory3D Sensor

AI Trainer Specialist performing 2D, 3D, and 4D data annotation and labeling for machine learning datasets. Conducts calibration and quality reviews to ensure labels meet dataset accuracy and consistency requirements. Works with teams to support improved model performance through iterative review and feedback. • Perform 2D/3D/4D annotation and labeling • Run calibration procedures for dataset quality • Complete quality reviews for labeled outputs • Collaborate on label improvement for ML model performance

2022 - Present

Education

Work History