๐Ÿš€ Expert Data Scientist & AI Engineer

Hi, I'm Chetan Bavdhankar

M.Sc. Physics |

Bridging Physics & Data Science

A unique blend of scientific rigor and engineering excellence

From Supernova to Software

With a Master's degree in Physics from Pune University and research experience in Astrophysics and Cosmology at the National Center for Nuclear Research, I bring a unique analytical perspective to data science and AI engineering.

Currently at ING Hubs Poland in Warsaw, I execute advanced analytics projects optimizing model thresholds, build robust data pipelines, and lead quarterly back-testing initiatives across 35+ entities.

My passion lies in creating intelligent systems - from multi-agent AI pipelines to conversational chatbots - that solve real-world problems with elegance and efficiency.

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Years Experience
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Entities Managed
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Production-grade AI projects
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Max Efficiency gained from Automation

Professional Experience

Expert Data Scientist
ING Hubs Poland | Warsaw, Poland
Jan 2024 โ€“ Present
  • Executing B&U projects (Risk UAT, Trigger Based BackTesting, Segmentation) to optimize model thresholds, ensuring compliance and preventing false positives/negatives
  • Performed advanced analysis using Python for Transaction Monitoring projects, including customer retention, data volume, and optimizing for positive rates
  • Worked with large-scale datasets using PySpark and big data tools
  • Co-owner of quarterly BackTesting project across 35+ entitiesโ€”managing codebase, assigning dev tasks, and delivering high-quality code
  • Built robust data pipelines using data from multiple databases and tables in Parquet, Iceberg, and JSON formats for efficient querying
  • Contributed to data and code migration to a new analytics platform and part of the core team managing quarterly data storage
  • Applied ML techniques: SVM (text mining), DBSCAN (outlier detection), Random Forest (regression for output sampling)
  • Integrated AI tools into workflows: Used GitHub Copilot to enhance development efficiency, participated in internal AI Guild, conducting exploratory work on Ollama, Copilot, and Power BI integration for technical insights
Senior Data Scientist
ING Hubs Poland | Warsaw, Poland
Jun 2021 โ€“ Dec 2023
  • Supported in methodology to optimize Transaction Monitoring Systems
  • Planned, tested, and managed codebase, ensuring the resilience and reliability of executions
  • Supported BAU project readiness (control design, RUAT, BackTesting) and presented analytical reports to business stakeholders
Research Scholar
National Center for Nuclear Research | Warsaw, Poland
Mar 2018 โ€“ Mar 2021
  • Merged several data sets from different telescopes studying the most energetic supernova type Ia and their host galaxies
  • Created in-body simulation using Monte-Carlo method to make over 10,000 unique and unbiased samples of supernova data by using correlations in observed physical properties
  • Trained a Support Vector Machines (SVM) model to compare observed and simulated data using their cross correlations and estimate missing effects

Featured Projects

A selection of my personal work showcasing skills in Artificial Intelligence, Android app development, and data science

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AI Agent

AEGIS - Emergency System

Multilingual AI emergency guidance system bridging the gap between distressed citizens and responders using Telegram, Mistral Large LLMs, and real-time dashboard triage.

Python Mistral AI Flask Telegram API
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AI Agent

ArxivGnosis

Intelligent research assistant that discovers, ranks, and summarizes Arxiv papers using LLMs. Features impact filtering and automated content creation workflows.

Python LangChain LLMs Arxiv API
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Data Science

Business Segmentation Analysis

Customer segmentation using K-Means clustering on 100K+ records for risk assessment and AML compliance. Optimized segment identification with Silhouette Analysis and PCA visualization.

Python K-Means PCA scikit-learn Pandas
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AI/ML

Conversational AI Chatbots

Developed Agentic RAG chatbot with vector DB memory, context handling, and public web UI. Fine-tuned LLMs (LLaMA 2, Mistral) via Ollama for offline, STT/TTS voice interaction.

RAG Vector DB Ollama LLaMA
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Android

FortressAI Suite

Secure AI-powered conversational agents with encrypted local storage, biometrics, and device automation using Accessibility Services.

Kotlin Jetpack Compose Room Firebase
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Android

AstroNear

Astronomy & stargazing companion with location-based celestial body identification using MVVM architecture and modern Android practices.

Kotlin MVVM Hilt Retrofit
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Android

BrainTeaser - IQ Offline

Collection of offline casual games & brain-teasers with privacy-first, fully local execution and Room database persistence.

Kotlin Compose Room Coroutines
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Agentic Web App

Hodophile Travel Agent

Multi-origin travel optimizer finding Global Minimum costs via a 4-agent optimization engine (Scout, Matchmaker), multi-modal search, and neighborhood intelligence.

Vanilla JS Agentic AI Optimization algorithm
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Web

Interactive Games Collection

Browser-based chess and Sudoku games with full rule enforcement, timers, and validation logic.

HTML5 JavaScript CSS3

Technical Skills

A comprehensive toolkit spanning data science, AI/ML, and software development

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Data Science & Analytics

Python SQL Pandas PySpark NumPy scikit-learn
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AI & Machine Learning

LangChain LangGraph Ollama Mistral AI PyTorch OpenAI Anthropic
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Android app Development

Kotlin Jetpack Compose Room Hilt Coroutines MVVM
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Cloud & Tools

AWS GCP Excel Copilot Git GitHub
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Research & Physics

Monte Carlo SVM Statistical Analysis Astrophysics
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Soft Skills

Ownership Proactiveness Detail Oriented Agile Leadership

Let's Connect

Interested in collaboration or have a project in mind? I'd love to hear from you!

Ready to collaborate?

Whether you're looking for a data scientist, AI engineer, or app developer, I'm always open to discussing new opportunities and innovative projects.

Based in Warsaw, Poland, I'm available for remote work and local opportunities.