Headline

LLM Training

About

I lead the Data Science team at Draup, specializing in NLP, ML, & Deep Learning to create scalable solutions. I specialize in transformers, semantic search, text classification, clustering, NER, NLU, building RAG applications, vector bases, text2sql, relationship extraction, information retrieval, and recommendation systems. Beyond development, I’m passionate about mentoring, assisting with hiring and sharing insights through YouTube, blogs, and GitHub.

Location

Bengaluru

AI stack

anthropic apis

huggingface

Fireworks AI

Milvus

Qwen

vLLM

Work experience

Principal Data Scientist at Draup, Jan 2026 - Present · 10 mos, Bengaluru, Building and Scaling Small Language Models (SLMs)

Architect - Data Science at Draup, Jan 2023 - Dec 2025 · 3 yrs, Bengaluru, • Led Draup's Data Science team specializing in NLP, ML, and Deep Learning. • Managed the integration of multiple RAG models & Text-to-SQL models in the CURIE project for real-time information retrieval. • Developed and optimized the LLM-Powered News Engine to efficiently process and cluster company-specific news content at scale.

Data Scientist IV at Draup, Jan 2022 - Apr 2023 · 1 yr 4 mos, Bengaluru, Karnataka, India, Leading Machine Learning team

Software Engineer at Calient.AI, Oct 2017 - Sep 2018 · 1 yr, Bengaluru Area, India, • Designed and developed an "Auto-Discovery & Verification Automation" system for Optical Circuit Switches at Calient.AI • Automated verification and discovery of ports, reducing human effort and improving efficiency. • Implemented algorithms to enable auto-discovery and verification, enhancing system functionality.

Software Developer at Techniche E-Commerce Solutions Pvt. Ltd., Apr 2015 - Feb 2017 · 1 yr 11 mos, Bengaluru Area, India, • Designed and developed small-scale e-commerce websites using MEAN stack technologies. • Led end-to-end project delivery, including database design, REST API development, and payment gateway integrations. • Collaborated with cross-functional teams for successful project deployment.

Software Engineer at Hewlett-Packard, Aug 2013 - Dec 2014 · 1 yr 5 mos, Bengaluru Area, India

Education

Bachelor of Engineering (BE), Computer Science, Jawaharlal Nehru National College Of Engineering (VTU)

Public links

github: https://github.com/sachinkalsi

medium: https://medium.com/@sachinkalsi

youtube.com: https://youtube.com/@sachin_kalsi

sachinkalsi.github.io: https://sachinkalsi.github.io/