Oleksandr

Key Skills

Software

Don't disclose

Top Subject Matter

Image dataset creation and quality assurance for visual content

AI models responses evaluation (text, graphical content in prompt )

Coding agents responses evaluation

Top Data Types

Image

Text

Document

Top Task Types

Bounding Box

Segmentation

Classification

Entity (NER) Classification

Question Answering

Object Detection

RLHF

Computer Programming/Coding

Evaluation/Rating

Text Summarization

Fine-tuning

Freelancer Overview

Graphic Assistant / Approver — Mindy Support (Kyiv). Brings 12+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Don't disclose. Education includes Bachelor of Science, National Technical University of Ukraine (KPI) (2017). AI-training focus includes data types such as Image and labeling workflows including Evaluation and Rating.

Labeling Experience

Data Annotator - Freelance

TextRLHF

Support AI model training. Concentrating on data visualization, responses evaluation. Quality assurance to refine model outputs and ensure accuracy in contents. Applied Reinforcement Learning from Human Feedback (RLHF) techniques to improve model learning.

2026 - Present

Image Reviewer (Data Annotation) - Mindy Support

Image

Performed image review and approval work aligned to company guidelines and quality standards. Prepared and organized visual materials for database creation and maintenance while ensuring compliance with technical requirements. Maintained accuracy and efficiency when processing large volumes of content. • Processed and reviewed images per quality standards • Organized visual assets for database maintenance • Conducted quality control against technical requirements • Managed large content volumes with high accuracy

2016 - 2017

Graphic Assistant (Data Annotation) / Approver — Mindy Support (Kyiv)

Don't discloseImage

Served as a Graphic Assistant (Data Annotation) / Approver, processing and reviewing images for compliance with company guidelines. Performed quality control checks to ensure outputs met technical requirements and quality standards. Worked with large volumes of visual content while maintaining accuracy and consistency in labeled materials. • Processed images according to internal guidelines • Reviewed items for adherence to quality/technical standards • Prepared and organized visual materials for database creation and maintenance • Conducted quality assurance as an approver

2016 - 2017

Education

Work History