Niraj K
Senior Data Scientist
Gurugram, Haryana, India
Summary
👤
Senior🎓
Top SchoolNiraj K is a Senior Data Scientist and ML Engineer based in Gurugram with 9 years of professional experience and a focused 4-year track record in production machine learning for payment fraud. He has designed and deployed fraud-detection models and strategic rule layers across industries at American Express and Accertify, delivering measurable reductions in fraud dollars and operational costs while improving customer experience. Niraj combines strong feature engineering and model validation practices (A/B and stress testing) with practical deployment skills using PySpark, MLflow, FastAPI, Docker and AWS, and has mentored junior data scientists to scale team capability. Notably, he led an automated review solution that doubled annual savings and introduced novel feature types that materially improved model performance. Trained at the Indian Statistical Institute, he pairs rigorous academic foundations with a pragmatic, cross-functional approach to productionizing ML.
9 years of coding experience
3 years of employment as a software developer
Bachelor's degree, Computer Science, Bachelor's degree, Computer Science at Govind Ballabh Pant Engineering College - IndiaMaster's degree, Computer Science, Master's degree, Computer Science at Indian Statistical Institute, Kolkata
English, Japanese, German, Hindi
Github Skills (5)
solve6
data-structures4
cpp3
android-app1
android1
Programming languages (1)
Github contributions (5)
neeraj2681/neeraj2681.github.io
Mar 2021 - Mar 2025
Contributions:46 pushes, 3 branches in 4 years
neeraj2681/InterviewBit-Practice
Feb 2020 - Oct 2021
Contributions:51 commits, 40 pushes, 1 branch in 1 year 8 months
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