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deardisha/README.md

👋 Hi, I'm Disha Goyal

Data Engineer | Data Analyst | Databricks Certified Data Engineer Associate | SQL • Python • PySpark • Databricks • Tableau

Recent MS Computer Science graduate from the University of Southern California, focused on building reliable data pipelines, analytics-ready datasets, and decision-support solutions.

I enjoy turning messy raw data into clean, validated, structured datasets that support business decisions, reporting, BI, machine learning, and operational workflows.


🚀 Current Focus

Area What I’m Building / Learning Tools
Data Engineering End-to-end lakehouse pipelines, ETL/ELT workflows, data validation, incremental ingestion, and medallion architecture Databricks, PySpark, Spark SQL, Delta Lake
Analytics & BI Dashboard-ready datasets, KPI reporting, business analysis, customer segmentation, and data storytelling SQL, Tableau, Power BI, Excel
Machine Learning Classification, feature engineering, model evaluation, risk scoring, and decision-support systems Python, scikit-learn, pandas
Cloud & AI Certifications Preparing for AWS Certified Cloud Practitioner and AWS Certified AI Practitioner certifications AWS Skill Builder, Cloud Fundamentals, Generative AI, Machine Learning
Continuous Learning Expanding my Databricks, Lakeflow, Unity Catalog, and cloud data engineering skills Databricks Academy, Lakeflow, Unity Catalog

💼 Featured Projects

Project Description Tech Stack
HealthPulse - Smart Patient Monitoring and Readmission Analytics Built an end-to-end healthcare analytics platform in Databricks using Bronze, Silver, and Gold architecture. Processed patient, admission, condition, medication, lab, and vital-sign data to create Patient 360 profiles, hospital operations metrics, monitoring alerts, and readmission-risk datasets. Developed classification models, explainable risk factors, audit logging, validation checks, watermark tracking, and incremental ingestion workflows. Python, PySpark, Spark SQL, Databricks, Delta Lake, Machine Learning
RetentionIQ - Telecom Churn and Retention Analytics Built an end-to-end retention decision-support solution that scores customers by churn risk, customer value, and revenue exposure. Developed a recommendation engine, campaign prioritization workflow, SQLite analytics layer, budget simulation, and interactive Tableau dashboard. Python, SQL, scikit-learn, SQLite, Tableau, pandas
U.S. EPA Emissions Analytics Dashboard Built Databricks SQL workflows to clean, transform, and analyze EPA emissions data, including state and county-level metrics and emissions-per-person calculations. Databricks SQL, SQL, Data Cleaning, Data Visualization
DuckDB Zonemap Optimization Extended DuckDB query execution by integrating column imprint bitmaps with zonemap pruning to improve predicate filtering efficiency. C++, DuckDB, SQL, Query Optimization
Cropable - AI Crop Disease Detection Published research project on an AI-powered crop disease detection system using CNN and VGG16-based image classification to identify tomato leaf diseases and recommend treatment measures. Python, CNN, VGG16, Image Processing, Machine Learning

🧠 Tech Stack

Category Tools / Skills
Programming & Querying Python, SQL, PySpark, Spark SQL
Data Engineering ETL/ELT, batch processing, incremental ingestion, data transformation, data validation, pipeline orchestration, watermarking, schema enforcement
Big Data & Lakehouse Apache Spark, Databricks, Delta Lake, Delta tables, Unity Catalog, Auto Loader, medallion architecture
Analytics & Business Intelligence Exploratory data analysis, KPI development, dashboard design, business reporting, customer segmentation, trend analysis, data storytelling
Machine Learning scikit-learn, classification, feature engineering, model evaluation, risk scoring, predictive analytics
Databases & Data Modeling MySQL, MariaDB, SQLite, Databricks SQL, relational modeling, dimensional modeling, joins, window functions
BI & Visualization Tableau, Power BI, Excel, interactive dashboards, calculated fields, filters, executive reporting
Data Quality & Governance Data profiling, missing-value handling, duplicate detection, validation rules, audit logging, data lineage, access governance
Developer Tools Git, GitHub, Jupyter Notebook, VS Code, virtual environments, CI/CD fundamentals
Cloud & Platforms AWS fundamentals, S3 concepts, cloud data services, Databricks platform

🎓 Education

🎓 University of Southern California
M.S. in Computer Science

🎓 Vellore Institute of Technology
B.Tech in Computer Science and Engineering


🏅 Certifications & Learning

  • Databricks Certified Data Engineer Associate — Issued July 18, 2026
  • Preparing for AWS Certified Cloud Practitioner
  • Preparing for AWS Certified AI Practitioner
  • Knowledge Badge - Data Ingestion with Lakeflow Connect
  • Knowledge Badge - Deploy Workloads with Lakeflow Jobs
  • Knowledge Badge - Build Data Pipelines with Lakeflow Spark Declarative Pipelines
  • Knowledge Badge - DevOps Essentials for Data Engineering
  • Knowledge Badge - SQL Analytics on Databricks
  • Knowledge Badge - AI/BI for Data Analysts

📫 Connect

LinkedIn GitHub Portfolio Email


⭐ Open to Data Engineer, Data Analyst, Analytics Engineer, Business Intelligence Analyst, and related data roles.

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  1. Shashwat53/Cropable Shashwat53/Cropable Public

    This project named “Cropable” detects the crop disease and recommends treatment accordingly. Using our application, the farmer can upload the image of the respective damaged crop our application wi…

    Python 1

  2. epa-emissions-databricks-dashboard epa-emissions-databricks-dashboard Public

    Databricks SQL dashboard analyzing 2023 EPA emissions data across U.S. states and counties.

  3. Disha-Goyal-Portfolio-Website Disha-Goyal-Portfolio-Website Public

    Disha Goyal's Portfolio Website

    HTML

  4. retentioniq-telecom-churn retentioniq-telecom-churn Public

    Telecom churn analytics and retention decision engine using Python, SQL, machine learning, SQLite, and Tableau.

    Jupyter Notebook