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Santanu Sengupta

Santanu Sengupta

AI Data Annotator & RLHF Evaluator (Freelance)

India flagKolkata, India
$5.00/hrEntry LevelSnorkel AI

Key Skills

Software

Snorkel AISnorkel AI

Top Subject Matter

Business Domain Expertise
Management Domain Expertise
Fmcg Domain Expertise

Top Data Types

TextText
DocumentDocument

Top Task Types

RLHF

Freelancer Overview

AI Data Annotator & RLHF Evaluator (Freelance). Brings 24+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Snorkel AI. Education includes Executive Master of Business Administration, Management Institute (2023) and Bachelor of Commerce, Calcutta University (2003). AI-training focus includes data types such as Text and labeling workflows including RLHF.

Entry LevelEnglishBengaliHindi

Labeling Experience

Snorkel AI

AI Data Annotator & RLHF Evaluator (Freelance)

Snorkel AITextRLHF
As a freelance AI Data Annotator and RLHF Evaluator at Snorkel AI, contributed to structured annotation and evaluation tasks for large language model improvement projects. Performed web research verification and provided reinforcement learning from human feedback by rating, ranking, and evaluating AI-generated text outputs. Leveraged advanced business and analytical skills to assess business, management, and FMCG domain prompts and responses for factual accuracy and instruction-following quality. • Completed RLHF evaluations, ranking AI outputs on reasoning quality and instruction-following. • Conducted comparative rating of multi-turn business and management-related AI responses. • Performed structured annotation, including verification against web sources and factual claim assessment. • Maintained high accuracy and consistency standards to support LLM fine-tuning pipelines.

As a freelance AI Data Annotator and RLHF Evaluator at Snorkel AI, contributed to structured annotation and evaluation tasks for large language model improvement projects. Performed web research verification and provided reinforcement learning from human feedback by rating, ranking, and evaluating AI-generated text outputs. Leveraged advanced business and analytical skills to assess business, management, and FMCG domain prompts and responses for factual accuracy and instruction-following quality. • Completed RLHF evaluations, ranking AI outputs on reasoning quality and instruction-following. • Conducted comparative rating of multi-turn business and management-related AI responses. • Performed structured annotation, including verification against web sources and factual claim assessment. • Maintained high accuracy and consistency standards to support LLM fine-tuning pipelines.

2026 - 2026

Education

C

Calcutta University

Bachelor of Commerce, Commerce

Bachelor of Commerce
2003 - 2003
C

Central Board of Secondary Education

High School Diploma, General Studies

High School Diploma
1999 - 1999

Work History

K

Kedara Trading LLP

Sales & Field Operations Consultant

Kolkata
2026 - Present
S

Spice Mobility Ltd

Area Sales Manager / Smartphone Head

Kolkata
2011 - 2015