Open to opportunities

S Choudhary

@schoudhary

Message

Senior Data Scientist specializing in LLM engineering, RAG, and ML model evaluation.

India

Message

What I'm looking for

I seek roles building and evaluating LLMs and ML systems, with strong emphasis on rigorous evaluation, production deployment, collaboration, and growth in LLM/AI research.

I am a Senior Data Scientist with 5+ years of applied data science experience building and deploying ML and DL models across domains such as education, e-commerce, and healthcare. I specialize in LLM engineering, RAG pipelines, vector databases, prompt engineering, and structured evaluation to measure hallucination, tool use, and reasoning robustness.

In my current role I design stress-testing frameworks for Gemini, GPT and Claude, develop agent-based IoT simulation environments, and contribute to RLHF workflows to improve model alignment. I have built predictive and credit-risk models, implemented ensemble techniques, and engineered datasets that improved model generalization and evaluation depth.

I work hands-on with Python, SQL, PyTorch, TensorFlow, Transformers, and AWS (EC2, SageMaker) to deliver production-ready models and evaluation pipelines. I prioritize rigorous evaluation, interpretable insights, and practical deployments that drive data-driven decision making.

Experience

Work history, roles, and key accomplishments

Current

Senior Data Scientist

Current

Highbrow Technology Inc.

May 2024 - Present (1 year 10 months)

Designed and executed LLM stress-testing and evaluation frameworks, built RAG pipelines and agent-based IoT simulations to benchmark grounding, reasoning, and tool-use, and contributed to RLHF workflows to improve alignment.

LLM Evaluation RAG Vector Databases Prompt Engineering Python Benchmarking

Data Scientist

Fractal Analytics Pvt Ltd

Feb 2024 - Apr 2024 (2 months)

Applied regression models to optimize ROI in Market Mix Modeling projects and performed SQL-based data extraction to support strategic marketing decisions.

Regression Modeling SQL ROI Optimization Data Analysis Python Statistical Modeling

Data Scientist

Schoollog

Aug 2022 - Jan 2024 (1 year 5 months)

Developed and deployed predictive models to identify at-risk students, conducted EDA and visualization of student data, and delivered actionable insights to improve intervention strategies.

predictive modeling Classification Data Cleaning EDA Data Visualization SQL Python Reporting

Associate Data Scientist

Schoollog

Jan 2018 - Feb 2020 (2 years 1 month)

Built and validated credit risk models using logistic regression, decision trees, random forests and ensemble techniques, producing an additive scoring model with a KS of 51.5% and enabling data-driven decisions.

Risk Modeling Logistic Regression Random Forest SQL Python Data Cleaning