Headline

Data Scientist (M2/Sr.) | Analytics | GenAI Enthusiast | LLMs

About

Data Scientist with deep expertise in marketing, voice analytics, and large-scale customer data, building production-grade ML and NLP systems that drive measurable business impact. At CARS24, I partnered closely with growth, product, and business teams to leverage customer-level data—including clickstream behavior, WhatsApp, SMS, calling, RCS, and rich profile data—to enable data-driven decisioning across acquisition, engagement, and monetization. I’ve built and productionized propensity models (conversion, upsell/cross-sell, suppression) using XGBoost, NLP classifiers, and BERT-based models, powering highly targeted CRM campaigns, improving customer segmentation, intent detection, lead prioritization, and optimizing campaign performance across channels. My work spans the entire ML lifecycle, from feature engineering and offline evaluation to deployment, monitoring, and continuous iteration in production. From an infrastructure and platform perspective, I’ve worked extensively with AWS, SageMaker, FastAPI, Airflow, and SQL-based analytics on Snowflake to build scalable and reliable data and ML pipelines. I’ve supported operational excellence through Grafana-based monitoring and implemented CI/CD workflows using GitHub Actions to streamline model and service deployments. A BITS Pilani (EEE) graduate, I’m driven by applying advanced ML and NLP to solve complex, high-impact problems at the intersection of data, technology, and business.

Location

Bengaluru

AI stack

hugging face

langchain

ollama

openai

Work experience

Lead Data Scientist at CARS24, Sep 2024 - Present · 1 yr 9 mos, Bengaluru, Karnataka, India, • Lead Data Scientist at CARS24, Bengaluru, Karnataka, India • Developed GenAI Applications like chatbot, Document automation, text analytics using AWS, Sagemaker, Fast API • Implemented Qdrant vector DB for efficient data storage and retrieval • Utilized Pandas, Numpy, XGBoost for data analysis and modeling

Data Scientist at HDFC Bank, Sep 2021 - Jan 2025 · 3 yrs 5 mos, Bengaluru, Karnataka, India

Senior Manager (Data science) at ICICI Bank, Mar 2021 - Sep 2021 · 7 mos, Mumbai, Maharashtra, India

Manager (Data Science) at ICICI Bank, Mar 2020 - Mar 2021 · 1 yr 1 mo, Mumbai, Maharashtra, India, Currently part of Data Science and Analytics Group at ICICI Bank Mumbai

Machine Learning Engineer at Quantiphi, Jul 2018 - Feb 2020 · 1 yr 8 mos, Mumbai Metropolitan Region, Part of research and development team at Quantiphi Analytics Pvt. Ltd, researching on NLP usecases. With around more than one year of experience as a data scientist I am well versed with data manipulation, exploratory data analysis, machine learning algorithm, feature engineering , NLP , training and testing, and other deep learning related tasks. Also achieved Gold level at Worldquant platform.

Product Development Engineer at Reflexis Systems, Inc., Jan 2018 - Jun 2018 · 6 mos, Pune/Pimpri-Chinchwad Area

Education

Bachelor’s Degree, Electrical and Electronics Engineering, Birla Institute of Technology and Science, Pilani

Public links

github: https://github.com/sachin5nowal