Alexander K.

Key Skills

Software

Label Studio

Roboflow

Internal/Proprietary Tooling

Top Subject Matter

Industrial Safety and Worker Monitoring (construction sites and industrial facilities)

RLHF and model evaluation for AI systems

Top Data Types

Image

Document

Text

Top Task Types

Object Detection

Bounding Box

Polygon

RLHF

Entity (NER) Classification

Segmentation

Freelancer Overview

Data Annotator / Labeler (Remote freelance) — AI Training Data Annotation and Model Ranking Support. Core strengths include N and A. AI-training focus includes data types such as Image and labeling workflows including Object Detection.

Labeling Experience

Data Annotator / Labeler (Remote freelance) — AI Training Data Annotation and Model Ranking Support

ImageObject Detection

Performed visual data annotation for RLHF and industrial safety/worker monitoring use cases on construction sites and industrial facilities. Labeled protective equipment and relevant objects using structured geometric annotations and followed detailed labeling instructions for challenging conditions. Conducted model ranking support and quality assurance by evaluating label consistency and accuracy across the dataset. • Object detection/recognition labeling for helmets and high-visibility vests • Hazard zone detection with polygons and bounding boxes • Fact-checking and evaluation support for visual conditions • Quality assurance and refinement of labeling instructions

2025 - 2025

Education

Work History