Welcome to My Portfolio

Vamsi Krishna Chirumalla

Senior Data Analyst & Data Scientist with 4+ years of industry experience combined with advanced Master's training in Data Science & Business Analytics. Full-stack expertise spanning data engineering, machine learning, business intelligence, and AI/LLMs.

4+
Industry Experience
15+
Technologies
20+
Academic Projects
3.7
Master's GPA

Technical Expertise

Data Science & ML

Python • Pandas • NumPy • Scikit-learn • Statistical Analysis • EDA • Feature Engineering • PCA

Deep Learning

TensorFlow • Keras • PyTorch • CNN • LSTM • RNN • Autoencoders • Transformers • BERT

NLP & Text

NLTK • spaCy • TextBlob • VADER • TF-IDF • Sentiment Analysis • POS Tagging • NER

BI & Visualization

Power BI • Tableau • Matplotlib • Seaborn • Excel • Plotly • Dashboard Design • DAX

Databases & SQL

Oracle • SQL Server • PostgreSQL • SQLite • MongoDB • Advanced SQL • ER Modeling

Big Data & Cloud

PySpark • Apache Kafka • AWS • Azure • Google Cloud • ETL/ELT • Data Warehouses

Network & Graph

NetworkX • Graph Analytics • PageRank • Community Detection • Link Prediction

Security & Infrastructure

SSL/TLS • IPsec • SSH • Cisco Packet Tracer • IoT Security • Zero Trust Architecture

Professional Journey

Teaching & Academic Leadership

Graduate Teaching Assistant

Florida Atlantic University
2 Years (During Master's)
Selected TA for graduate-level Data Science & Analytics courses. Provided mentoring, guidance, and support to students.
  • Mentored 60+ graduate students per semester across Python, SQL, ML, NLP, Big Data
  • Developed supplementary course materials, tutorials, and lab exercises
  • Provided one-on-one guidance on student projects and research
  • Graded assignments and provided constructive feedback
  • Contributed to curriculum development based on industry trends

Industry Experience

Senior Data Analyst

Regions Bank
Jan 2026 – Present
Leading U.S. financial institution. Developing dashboards, identifying trends, delivering data-driven insights.
  • Developed complex SQL solutions across Snowflake, BigQuery, Redshift
  • Performed advanced data analysis using Python (Pandas, NumPy, Scikit-learn)
  • Designed executive dashboards using Power BI, Tableau, Looker
  • Built and automated ETL/ELT pipelines using Alteryx, dbt, Python
  • Leveraged Generative AI tools for automated reporting and productivity

Data Analyst

Elevance Health
Feb 2025 – Dec 2025
Healthcare organization. Developed reports, analyzed healthcare data, delivered insights.
  • Analyzed healthcare datasets using SQL and Python for trend identification
  • Developed interactive dashboards using Power BI, Tableau, Looker Studio
  • Optimized complex queries across SQL Server, PostgreSQL, Snowflake, BigQuery
  • Built and managed ETL pipelines using AWS, GCP, Databricks
  • Performed A/B testing, statistical analysis, forecasting, predictive analytics

Data Analyst

Cognizant
Mar 2022 – Dec 2023
Global IT services. Analyzed datasets, built reports, provided actionable insights.
  • Utilized SQL and Python to extract, cleanse, and analyze large datasets
  • Developed interactive dashboards using Power BI, Tableau, Looker
  • Performed data validation, root cause analysis, forecasting, statistical modeling
  • Built and maintained ETL workflows using Alteryx, SQL, Snowflake, AWS, BigQuery
  • Collaborated with cross-functional teams to automate reporting

Programmer Analyst

Piramal Pharma Limited
Jan 2021 – Feb 2022
Global pharmaceutical company. Designed applications, optimized performance.
  • Analyzed insurance, claims, and customer data using SQL and Python
  • Designed executive dashboards using Power BI, Tableau, Looker Studio
  • Extracted, validated, and transformed data using SQL, Alteryx, Snowflake, AWS
  • Conducted ad-hoc analysis and statistical evaluations using Scikit-learn

Featured Projects

Data Engineering
01
E-Commerce Sales Analytics
End-to-end ETL pipeline processing 12,000+ records. Built 7 analytical datasets with 12 advanced SQL queries. Engineered 30+ business metrics and customer segmentation strategy.
Python SQL Pandas ETL
View Repository →
Machine Learning
02
Customer Churn Prediction
Random Forest ML model achieving 92% accuracy on 10,000 customer profiles. Engineered 28 advanced features with actionable retention strategies based on risk segmentation.
Scikit-learn Random Forest ML Feature Eng.
View Repository →
Healthcare Analytics
03
Healthcare Claims Analytics
Interactive Streamlit dashboard processing 50,000+ healthcare claims. Developed 12 advanced SQL queries analyzing denial patterns. Implemented $150M+ claims tracking system.
Streamlit Plotly SQL Healthcare
View Repository →

Academic Projects & Coursework

Data Science & Machine Learning

Deep Learning

Natural Language Processing

Information Retrieval & Computer Vision

Social Networks & Big Data Analytics

Cloud Computing & Infrastructure

Data Security & Network

Education & Qualifications

Master of Science in Data Science & Business Analytics

Florida Atlantic University — Boca Raton, Florida, USA
Jan 2024 – Dec 2025
CGPA: 3.7 / 4.0
Coursework: Data Science Tools, Machine Learning, Deep Learning, NLP, Cloud Computing, Big Data Analytics, Database Systems, Information Retrieval, Data Security

B.Tech in Electrical Engineering

R.V.R & J.C College of Engineering — Guntur, India
May 2019 – Mar 2022
GPA: 8.39 / 10.0

Diploma in Electrical & Electronics Engineering

Gudlavalleru Polytechnic College — Gudiwada, India
May 2016 – Apr 2019
Score: 88.28%

Professional Certifications

Microsoft Certified Power BI Data Analyst Associate
Tableau Desktop Specialist Certification
AWS Certified Cloud Practitioner

Let's Work Together

Have a data challenge? Let's discuss how I can help transform your data into strategic insights and measurable business outcomes.

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