Open to Opportunities

Nicolette Mtisi.

Data Scientist · Data Analyst

Transforming complex data into decisions that drive real outcomes.

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Who I Am

I am a Data Scientist and AI Engineer with a passion for turning raw data into actionable intelligence. Currently completing my MS in Data Analytics and Visualization at Yeshiva University's Katz School of Science and Health, I bring hands-on experience in machine learning, NLP, business intelligence, and data engineering. I love building things that are both technically rigorous and easy to understand, whether that is a predictive model, an NLP pipeline, or an interactive dashboard.

New York, NY United States
Data and Operations Analyst Intern SnapRefund · 2026
MS Data Analytics Katz School · 2025 to 2026
500+ Connections LinkedIn · Growing Network

Experience and Education

Work Experience

Internship Jan 2026 to May 2026

Data and Operations Analyst Intern

SnapRefund

New York, NY · Remote

  • Queried and analyzed 10,000+ monthly insurance transactions across ClaimsSnap and AgentSnap using SQL and Excel to surface operational bottlenecks
  • Streamlined billing workflows and reduced manual payment processing times by 20% for carriers and TPAs
  • Published industry insights that increased platform adoption by 15%
SQLExcelData AnalysisContent Strategy
Part-time Oct 2025 to Present

Social Media and Communications Graduate Assistant

Katz School of Science and Health

New York, NY

  • Synthesized 15+ student interviews into narratives that drove targeted engagement for prospective students
  • Analyzed digital engagement metrics across platforms with 10,000+ followers, optimizing content to increase reach by 20%
AnalyticsContentCommunications
Self-employed Aug 2021 to Dec 2024

Founder and Owner

Nicole's Treats

Harare, Zimbabwe

  • Analyzed sales and customer data using Python and Excel, optimizing pricing strategies for 50+ products and increasing revenue by 12%
  • Designed Tableau visualizations for 500+ monthly transactions, boosting product development efficiency by 25%
  • Leveraged data insights to acquire 300 new customers and increase engagement by 20%
PythonTableauExcelData Analysis
Internship Aug 2022 to Aug 2023

Data Science Intern

Zimbabwe Power Company (ZPC)

Harare, Zimbabwe

  • Cleaned and structured 10,000+ records, boosting reporting accuracy by 25%
  • Developed dashboards in Excel and Tableau for 5 operational units
  • Delivered insights that reduced fuel waste by 10%, saving $70,000 annually
PythonTableauExcelData Cleaning

Education

YU

MS, Data Analytics and Visualization

Yeshiva University, Katz School

Jan 2025 to Dec 2026

PythonSQLMachine LearningNLPData Visualization
UZ

BSc (Hons) in Data Science and Informatics

University of Zimbabwe

Graduated Sept 2024

StatisticsData ModelingPythonResearch

Featured Projects

BUSINESS INTELLIGENCE

Insurance Profitability Explorer

Interactive Power BI dashboard analyzing profitability across products, underwriter performance, and sales channels using simulated insurance data built for strategic decision making.

2025 · Personal Project

Power BIDAXData ModelingBusiness Intelligence
DATA ENGINEERING

USA Flight Delay and Cancellation Analysis

End-to-end analysis of real-world airline data identifying delay and cancellation patterns using Python and SQL, visualized in Tableau for actionable travel insights.

2025 · Personal Project

PythonSQLTableauData Cleaning
NLP AND AI

Twitter Sentiment Analysis with DistilBERT

Fine-tuned DistilBERT to classify airline tweet sentiment with high accuracy. Deployed on Hugging Face Spaces with a live Gradio demo accessible to anyone.

2025 · Personal Project

NLPDistilBERTHugging FaceGradioPython
NLP AND AI

Sentiment Analysis using NLP

Built a robust sentiment classifier using NLTK and Scikit-learn, exploring fundamental NLP techniques for text preprocessing and classification from scratch.

2024 · Personal Project

NLPPythonScikit-learnNLTK
MACHINE LEARNING

Predictive Maintenance for Machinery

Machine learning model predicting equipment failures from sensor data using ensemble techniques and class balancing strategies to reduce downtime and maintenance costs.

2024 · Personal Project

PythonScikit-learnPredictive ModelingML
BUSINESS INTELLIGENCE

Power BI Sales Dashboard, Adventure Works

End-to-end sales performance dashboard transforming raw transactional data into interactive executive-level visuals and KPI tracking for Adventure Works.

2024 · Personal Project

Power BIDAXExcelData Modeling
DATA ENGINEERING

Chronic Disease Analytics System

Transformed OLTP health records into a full OLAP data warehouse using PostgreSQL and ETL pipelines to surface actionable chronic disease insights for urban health management.

2024 · Personal Project

PostgreSQLETLData WarehousingSQL

Skills and Technologies

LANGUAGES
PythonSQLPostgreSQL
DATA TOOLS
Power BITableauExcelDAXQuickSight
MACHINE LEARNING
Scikit-learnPandasNumPyMatplotlibSeaborn
NLP AND AI
DistilBERTHugging FaceGradioLLMsRAGOpenAI
DATA ENGINEERING
ETLData WarehousingData ModelingOLAP
BUSINESS INTELLIGENCE
DashboardsCustomer InsightsKPI ReportingBI Strategy

Let's Work Together

I am actively seeking data analytics, data science, and AI engineering roles. If you have a project or opportunity that could use my skills, I would love to connect.

GITHUB nic-stack
LOCATION New York, NY

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