Hi, I'm Nicolette Mtisi

I can help unlock the power of your data. Passionate AI Engineer & Data Scientist.

View My Work Get In Touch
Download Resume

Projects

Insurance Profitability Explorer Project

Insurance Profitability Explorer

Developed an interactive Power BI dashboard to analyze insurance profitability, providing key insights on product performance, underwriter efficiency, and sales channels.

This project transforms simulated insurance data into a strategic decision-making tool, demonstrating how data analytics can drive proactive management and optimize business performance.

Power BI DAX Data Visualization Business Intelligence (BI) Data Modeling

View Live Dashboard | Read Article

USA Flight Delay and Cancellation Analysis Project

USA Flight Delay and Cancellation Analysis

Analyzed flight delay and cancellation patterns using real-world airline data to identify key factors and trends, leveraging Python and SQL for data processing.

Detailed analysis of flight delays/cancellations, identifying patterns and key contributing factors using data-driven insights to improve travel efficiency.

Python Tableau Data Cleaning & Wrangling Data Visualization

View Project | Read Article

Twitter Sentiment Analysis using DistilBERT Project

Twitter Sentiment Analysis using DistilBERT

Built and deployed a lightweight NLP model using DistilBERT to classify airline tweet sentiments, deployed on Hugging Face Spaces with a Gradio UI.

A step-by-step journey into building a BERT-based sentiment classifier for airline tweets, focusing on leveraging LLMs and deploying with Gradio.

NLP DistilBERT Hugging Face Python Machine Learning Gradio

View Project | Live Demo | Read Article

Sentiment Analysis using NLP Project

Sentiment Analysis using NLP

Developed an NLP-based model to analyze sentiment in text data, using Python libraries like NLTK and scikit-learn for preprocessing and classification.

Explored fundamental NLP techniques to build a robust sentiment analysis model, detailing data preprocessing and classification methods.

NLP Python Scikit-learn Machine Learning Data Cleaning & Wrangling

View Project | Read Article

Predictive Maintenance for Machinery Project

Predictive Maintenance for Machinery

Built a machine learning model to predict machinery failures based on sensor data, improving maintenance schedules and reducing downtime.

A comprehensive approach to predictive maintenance, leveraging ensemble techniques and data balancing strategies to enhance equipment reliability and minimize downtime.

Machine Learning Python Predictive Modeling Data Cleaning & Wrangling

View Project | Read Article

Power BI Sales Dashboard for Adventure Works Project

Power BI Sales Dashboard for Adventure Works

Designed an interactive Power BI dashboard to visualize sales performance for Adventure Works, highlighting key metrics and trends for decision-making.

A detailed guide on transforming raw data into actionable insights using Power BI, showcasing sales performance and key business trends for Adventure Works.

Power BI Data Visualization Business Intelligence (BI) Data Modeling Microsoft Excel

View Project | Read Article

Chronic Disease Analytics System Project

Chronic Disease Analytics System – OLTP to OLAP

Developed a system to transform transactional (OLTP) health data into an analytical (OLAP) format for chronic disease insights.

Explores the transformation of transactional health data into an analytical framework to derive actionable insights for chronic disease management.

PostgreSQL ETL Data Warehousing Data Modeling SQL

View Project | Read Article

About Me

Nicolette Mtisi

Hello! I'm Nicolette Mtisi, a passionate Data Scientist dedicated to transforming complex data into actionable insights. My expertise lies in building powerful analytical models and making data truly understandable, enabling it to speak through careful preparation, insightful visualization, and compelling storytelling.

I apply these skills to solve real-world challenges, such as predicting future trends or understanding complex behaviors, providing businesses with clear, data-driven intelligence. My goal is to empower organizations across diverse industries to make informed strategic decisions that drive measurable outcomes and foster innovation.

Welcome to my corner of the web! Feel free to explore my projects to see my work in action, connect with me, or simply say hello. I'm always eager to collaborate on impactful, data-driven initiatives!

Work Experience

Data Science Intern Zimbabwe Power Company (ZPC)

Aug 2022 – Aug 2023

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

Data Analyst & Sales Assistant VEETNIC Enterprises

Jan 2024 – Dec 2024

  • Conducted market basket analysis, identifying product combinations for 30,000+ monthly transactions, increasing sales by 8%.
  • Maintained sales databases, streamlining data entry for 30,000 monthly transactions, reducing errors by 15%.
  • Created sales and inventory reports using Power BI and Excel, improving decision-making speed by 20%.

Founder & Owner Nicole’s Treats

Aug 2021 – Dec 2024

  • Analyzed sales and customer data using Python and Excel, optimizing pricing strategies for 50+ products, increasing revenue by 12%.
  • Designed Tableau visualizations for sales and customer preferences, analyzing 500+ monthly transactions, boosting product development efficiency by 25%.
  • Leveraged data insights for marketing campaigns, increasing customer engagement by 20% and acquiring 300 new customers.

Education

M.S.: Data Analytics and Visualization

Yeshiva University, Katz School of Science and Health - New York, NY

Expected Dec 2026

B.Sc. (Hons) in Data Science & Informatics

University of Zimbabwe - Harare, Zimbabwe

Graduated Sept 2024

My Toolkit

Python
SQL
Microsoft Excel
Power BI
Tableau
Machine Learning
Predictive Modeling
Data Wrangling
Data Visualization
Natural Language Processing (NLP)
Large Language Models (LLMs)
Retrieval-Augmented Generation (RAG)
ETL
PostgreSQL
Data Modeling
Business Intelligence (BI)
Customer Insights
Time Series Analysis
NumPy
Pandas
Scikit-learn
Matplotlib
Seaborn
LLM
Hugging Face
Open AI
Gradio
Git

Get In Touch

I'm currently seeking new opportunities and collaborations. My inbox is always open!

Send Me a Message