Johnstone O.

Key Skills

Software

Labelbox

CVAT

Scale AI

Remotasks

Top Subject Matter

AI/ML training datasets

Computer vision and NLP model training

Top Data Types

Text

Audio

Video

Top Task Types

Classification

Bounding Box

Segmentation

Freelancer Overview

Data Labeling Specialist — Data annotation and quality review for AI datasets. Core strengths include Labelbox, CVAT, and Scale AI. AI-training focus includes data types such as Image, Text, and Audio and labeling workflows including Classification, Bounding Box, and Segmentation.

Labeling Experience

Data Labeling Specialist — Data annotation and quality review for AI datasets

LabelboxImageClassification

Labeled and annotated multi-modal datasets for AI and machine learning projects following established guidelines. Ensured dataset quality by reviewing and correcting labeling errors to maintain accuracy and consistency. Maintained production targets while collaborating with team members to improve labeling workflow efficiency. • Annotated and categorized images, text, audio, and video data • Performed quality assurance checks and corrected mislabels • Applied label guidelines to keep outputs consistent across tasks • Coordinated with supervisors to meet daily deadlines

2024 - Present

AI Data Annotator — Image and text annotation for model training

ImageBounding BoxSegmentation

Completed image and text annotation tasks to support AI model training projects. Used bounding boxes and segmentation-style labeling to capture target objects and regions, along with classification where required. Conducted quality checks on completed work and followed strict project instructions and confidentiality requirements. • Applied bounding boxes for object localization • Performed segmentation and classification annotations • Conducted QA checks before task submission • Followed instructions and confidentiality requirements for each project

2023

Education