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mayankchoudhary23/README.md

Hi, I'm Mayank Choudhary

I am a Data Science graduate student at Stevens Institute of Technology with hands-on experience in data analysis, KPI reporting, and dashboard development.

I specialize in transforming raw data into actionable insights using SQL, Python, and visualization tools (Tableau, Power BI). My work spans operational analytics, time series forecasting, and ETL pipeline engineering, with a strong focus on driving data-informed decisions across business and operations teams.


🛠️ Technical Stack

Languages & Querying SQL Python R

Data Visualization & BI Tableau Power BI Looker Studio Excel

Analytics & Statistics Statistical Analysis Data Cleaning EDA Time Series Hypothesis Testing

Reporting & Dashboards KPI Dashboards Reporting Automation Business Analysis

ETL & Data Engineering ETL Pipelines Data Wrangling Pandas NumPy

Databases PostgreSQL MySQL SQL Server NoSQL

Cloud Platforms Snowflake AWS Azure Google Cloud

Soft Skills Stakeholder Communication Problem Solving Analytical Thinking


🚀 Projects

U.S. Gig Economy Workforce Analysis Dashboard (Sep 2025 – Dec 2025) Tableau, Census Data, Federal Reserve Data

  • Built an interactive Tableau dashboard analyzing gig economy trends across 3,143 U.S. counties, visualizing worker density, income distribution, and demographic patterns.
  • Performed geospatial analysis to identify regional gig-work hotspots and income disparity patterns across 3K+ counties.

Time Series Forecasting of U.S. Deposits & Retail Sales (Sep 2025 – Dec 2025) Python, ARIMA, SARIMA

  • Conducted time series analysis on 10+ years of U.S. macroeconomic data, forecasting bank deposits and retail sales trends with 92% accuracy.
  • Generated 12-month forecasts with confidence intervals across 2 economic indicators to support strategic liquidity planning.

Enterprise Data Warehouse & Analytics Pipeline (Jan 2025 – May 2025) R, SQLite, Snowflake

  • Engineered an ETL pipeline to automate processing of 1M+ sales records, cutting manual preprocessing by 20%.
  • Transformed 2M+ OLTP records into optimized OLAP structures, improving forecast accuracy by 28% and accelerating stakeholder decision cycles by 30%.

🎓 Education

  • Master of Science in Data Science — Stevens Institute of Technology (2024–2026)
  • Master of Science in Mathematics — Raj Rishi Bhartrihari Matsya University (2020–2022)
  • Bachelor of Science (Honours) in Mathematics — Sri Venkateswara College, University of Delhi (2017–2020)

📬 Connect with Me

LinkedInEmail

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  1. financial-operations-analytics financial-operations-analytics Public

    End-to-end financial analytics project with forecasting, churn prediction, RFM segmentation, cohort analysis, CLV modeling, and executive dashboards using Python.

    Jupyter Notebook 1

  2. gig-economy-workforce-analysis gig-economy-workforce-analysis Public

    Interactive Tableau dashboard analyzing U.S. gig economy trends across 3,143 counties using Census, Federal Reserve & County Health data.

    1

  3. healthcare-readmission-prediction healthcare-readmission-prediction Public

    End-to-end ML pipeline predicting 30-day hospital readmissions for diabetes patients

    Jupyter Notebook 1

  4. lumbar-spine-degeneration-classification lumbar-spine-degeneration-classification Public

    End-to-end deep learning pipeline for automated lumbar spine degeneration classification from MRI scans using EfficientNet-B3, ResNet50, and Vision Transformers

    Jupyter Notebook 1

  5. reddit-sentiment-stock reddit-sentiment-stock Public

    NLP pipeline using Reddit sentiment + LLM + XGBoost + Logistic Regression to predict stock return direction

    Jupyter Notebook 1

  6. time-series-forecasting-us-economy time-series-forecasting-us-economy Public

    Box-Jenkins time series analysis and 12-month forecasting of U.S. Bank Deposits & Retail Sales using ARIMA and SARIMA models in R

    R 1