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Subrata Sarker

Subrata Sarker

Experienced Data Annotator specialized in STEM

USA flag
Ellicott City, Usa
$50.00/hrIntermediateOther

Key Skills

Software

Other

Top Subject Matter

No subject matter listed

Top Data Types

Computer Code ProgrammingComputer Code Programming
ImageImage
TextText

Top Label Types

Bounding Box
Computer Programming Coding
Diagnosis
Emotion Recognition
Fine Tuning
Object Detection
Prompt Response Writing SFT
Question Answering
Translation Localization

Freelancer Overview

I am an experienced materials scientist with over 12 years of research and development expertise, complemented by hands-on experience in data annotation and AI training data evaluation. In my most recent role as a Data Annotator at Handshake AI, I assessed AI-generated responses for factual accuracy, clarity, reasoning quality, and tone, while identifying inconsistencies and linguistic errors to improve model performance. My technical background includes advanced data analysis using Python and SQL, as well as proficiency in image analysis tools such as ImageJ, which enables me to contribute effectively to projects involving computer vision and scientific data labeling. I bring strong attention to detail, analytical skills, and a collaborative approach to ensuring high-quality training datasets for AI applications.

IntermediateEnglishBengali

Labeling Experience

Data Annotator, Handshake AI

OtherTextEvaluation Rating
As a Data Annotator at Handshake AI, I was responsible for evaluating AI-generated responses for accuracy and clarity. My work involved reviewing datasets for factual correctness and refining prompts for contextual accuracy. I carried out quality assurance to ensure consistency in data labeling and maintain dataset integrity. • Evaluated and rated AI-generated outputs for factuality and clarity. • Refined prompts to guide better AI model performance. • Identified and documented errors such as hallucinations and inconsistencies. • Conducted quality assurance reviews to ensure dataset consistency.

As a Data Annotator at Handshake AI, I was responsible for evaluating AI-generated responses for accuracy and clarity. My work involved reviewing datasets for factual correctness and refining prompts for contextual accuracy. I carried out quality assurance to ensure consistency in data labeling and maintain dataset integrity. • Evaluated and rated AI-generated outputs for factuality and clarity. • Refined prompts to guide better AI model performance. • Identified and documented errors such as hallucinations and inconsistencies. • Conducted quality assurance reviews to ensure dataset consistency.

2025

Education

H

Hongik University

Doctor of Philosophy, Materials Science and Engineering

Doctor of Philosophy
2016 - 2016
U

University of Dhaka

Master of Science, Physical-Inorganic Chemistry

Master of Science
2001 - 2001

Work History

H

Hongik University

Research Professor

Sejong
2023 - 2025
H

Hongik University

Postdoctoral Researcher

Sejong
2016 - 2025