Karthik Nair

Senior Data Scientist

Senior data scientist — ML & experimentation that moves the metric

About

I turn business questions into experiments and models, then prove they worked. Five years across marketplace and fintech — currently owning recommendations for 4M monthly shoppers and the A/B testing framework that keeps every launch honest. I obsess over clean statistics and recommendations a non-technical exec can act on in a minute.

4M

Monthly shoppers modelled

12%

Lift in add-to-cart rate

₹1.4Cr

Annual overstock saved

Selected work

+12% ATC
Re-ranker

XGBoost ranking model lifting add-to-cart 12%.

PythonXGBoostML
−30% runtime
Experiment Platform

A/B framework with sequential testing & guardrails.

A/B testingstatistics
₹1.4Cr/yr
Demand Forecaster

Top-200-SKU model cutting overstock write-offs.

forecastingPython
3D Portfolio

This WebGL site, built on Eliorexa.

three.jsReact

Skills & tools

Python
SQL
scikit-learn
XGBoost
A/B testing
statistics
Tableau
Airflow
MLflow
PySpark

Let's build something

Karthik is open to the right opportunity. Reach out — or grab the résumé.