Hrishikesh S.

Key Skills

Software

Don't disclose

Other

Top Subject Matter

Machine learning datasets and Data Science

AI answer evaluation

RLHF annotations

Top Data Types

Document

Top Task Types

Data Collection

RLHF

Freelancer Overview

Data Science Intern (Columbia University) — dataset curation and analysis support. Brings 3+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Don't disclose and Other. Education includes Bachelor of Technology, KIET Group of Institutions (2026) and Higher Secondary Certificate (Class XII), Beena Public School (2021). AI-training focus includes data types such as Computer Code and Programming and labeling workflows including Data Collection and RLHF.

Labeling Experience

Data Science Intern (Columbia University) — dataset curation and analysis support

Don't discloseData Collection

Collected and curated large-scale datasets to support machine learning workflows, improving overall data quality by 35%. Applied Python-based preprocessing and exploratory analysis to understand the data and refine downstream model inputs. Worked with researchers to support AI model development and improve robustness and reliability by 28%. • Dataset collection and curation • Exploratory data analysis in Python/Pandas • Data quality improvement • Research collaboration for model support

2025 - 2026

AI Answer Evaluator (OutlierAI) — evaluation and RLHF-style annotation

OtherRLHF

Evaluated and validated AI-generated analytical responses in the Data Analysis domain by auditing Python logic, reducing model output errors by 30%. Performed structured RLHF-style annotations to improve response accuracy and reliability by 25%. Collaborated with engineering teams to refine AI-assisted workflows and evaluation standards, improving efficiency and consistency by 20%. • Response evaluation and validation • Python logic auditing • Structured RLHF annotations • Supporting evaluation workflow standards

2024 - 2025

Education

Work History