WELCOME TO MY WEBSITE
Hi! I’m David Heller,
a Master's student in Data Science and AI with a background in
business administration and finance.
Originally from Quito, Ecuador, I moved to Miami 6 years ago to further my studies, and along the way, I developed a passion for using data to solve real-world problems.
I enjoy leveraging both my financial expertise and technical skills in data analytics to drive impactful solutions. This combination of business acumen and technical proficiency enables me to approach challenges from multiple perspectives, helping deliver effective results.
When I’m not immersed in work, I love spending time with my dog, Biela, and exploring new hobbies like hiking, playing sports, and learning about different cultures. I’m fluent in both Spanish and English, and I have a basic understanding of Hebrew.
Feel free to explore my projects and connect with me if you’d like to chat!


About Me

I’m committed to continuous learning and professional growth. As I look ahead, I’m excited to continue applying my growing knowledge in finance, data analytics, and machine learning to drive impactful results for businesses.
About Me
Over the past few years, I have built a solid foundation in finance and accounting, focusing on financial analysis, business operations, and reporting. This experience helped me see the transformative power of data in driving business decisions and uncovering valuable insights. Motivated by a desire to explore the technical side of data, I decided to pursue a Master’s in Data Science and AI at Florida International University, complementing my financial background with advanced analytical skills.
Pursuing this degree has sharpened my ability to tackle real-world challenges through predictive modeling, financial forecasting, machine learning algorithms, and data visualization. Whether working with Excel, Python, SQL, R, or Tableau, I focus on delivering clear, data-driven insights that support strategic decision-making.
I’m particularly passionate about applying this combination of business acumen and technical skills at the intersection of business strategy and data science. By leveraging both sides of my expertise, I help organizations make informed decisions, drive performance, and identify new opportunities. I take pride in delivering accurate, efficient, and actionable results that contribute to meaningful business outcomes.
I’m committed to continuous learning and professional growth. As I look ahead, I’m excited to continue applying my growing knowledge in finance, data analytics, and machine learning to drive impactful results for businesses.
What I Do
Business Stratagy
I throw myself down among the tall grass by the stream as Ilie close to the earth.
App Development
We’ll handle everything from to app development process until it is time to make your project live.
Business Stratagy
We’ll help you optimize your business processes to maximize profitability and eliminate unnecessary costs.
Mobile App
Using our expertise in mobile application development to create beautiful pixel-perfect designs.
SEO Optimisation
Your website ranking matters. Our SEO services will help you get to the top of the ranks and stay there!
UX Consulting
A UX consultant is responsible for many of the same tasks as a UX designer, but they typically.
Education
Education
Master of Science in Data Science and AI
Florida International UniversityExpected Graduation: December 2024
Bachelor of Business Administration in Finance
Florida International UniversityGraduated Summa Cum Laude in August 2021
Certifications
Data Analytics Bootcamp
IronhackJuly 2024
A full-time, 9-week bootcamp that equipped me with practical data analysis skills through live classes, labs, and projects. The curriculum covered:
• Python Programming: Data structures, control flow, functions, error handling, and OOP
• Data Wrangling: Data manipulation with Pandas, API integration, and web scraping with Beautiful Soup
• SQL: Database management, querying, and integration with Python
• Exploratory Data Analysis: Univariate, bivariate, and multivariate analysis, and hypothesis testing
• Data Visualization with Tableau: Creating interactive visualizations
• Machine Learning: Supervised and unsupervised learning techniques, feature engineering, and model evaluation with Scikit-Learn
• Advanced Technologies: Introduction to LLMs and cloud computing
• Version Control: Using Git for collaboration
Business Classes
Financial Accounting
Managerial Accounting
Corporate Finance
Financial Markets & Institutions
Financial Markets & Institutions
Financial Risk Management
Business Technology & Innovation
Marketing
Applied Business Statistics
Strategic Management
Data Science Classes
Artificial Intelligence Foundations
Data Science Foundations
Advanced Statistics
Data Mining
Advanced Data Analysis
Database Management
Data Visualization & Analytics
Advanced Database Systems
Business Analytics Applications
Portfolio
Cryptocurrency Explorer is a comprehensive application built to provide real-time data tracking, historical analysis, and predictive modeling of cryptocurrency prices. It leverages technologies like Streamlit to offer a user-friendly experience for both casual enthusiasts and data professionals alike. Users can track real-time cryptocurrency prices, analyze historical trends, and predict future prices using the ARIMA forecasting model.
Tools/Skills
Streamlit, Python, Data Visualization, ARIMA, Time Series Forecasting, CoinGecko API
US Apartment Rent Price Prediction and Data Analytics App
This Streamlit app predicts monthly rent prices for apartments across various states
in the U.S. The project involved data cleaning, exploratory data analysis, and applying machine
learning models to identify the best predictors. The app allows users to input apartment features
and compare rental price distributions and averages across states.
Tools/Skills
Python, Streamlit, Machine Learning, Data Cleaning, Data Analysis
Washington State Electric Vehicles Tableau Dashboard
This project provides an in-depth analysis of the electric vehicle (EV) landscape in
Washington State using Tableau. It covers data from the Washington State Department of
Licensing, detailing the distribution, growth, and characteristics of Battery Electric Vehicles
(BEVs) and Plug-in Hybrid Electric Vehicles (PHEVs).
Tools/Skills
Tableau, Data Visualization
Spotify Top 50 Charts in Spanish-Speaking Countries Tableau Dashboard
This project focuses on analyzing the top 50 charts of all Spanish-speaking
countries (except Cuba) for a specific week. The analysis includes data collection from Spotify,
data storage and management using SQL, detailed data analysis through SQL queries in Python,
and visualization using Tableau.
Tools/Skills
MySQL, Python, Tableau, Data Collection, Data Analysis
FIFA World Cup 2022 Analysis Using SQL
A comprehensive data analysis project focused on the FIFA World Cup 2022,
sourced from HiCounselor.com. The project involved advanced SQL techniques, including
complex joins, subqueries, Common Table Expressions (CTEs), and stored procedures, to
analyze player and team performance, match outcomes, and key tournament insights.
Tools/Skills
MySQL, Python
A/B Testing Analysis with Python
The A/B Testing Project aims to explore and analyze the effectiveness of a new
design variant compared to an existing one through rigorous statistical analysis and
experimentation. By leveraging user interaction data, the project seeks to uncover actionable
insights into various metrics such as completion rates, time spent on steps, error rates, and
abandonment rates. Through data preparation, exploration, analysis, and statistical testing using
Python libraries such as scipy and statsmodels, the project determines whether the proposed
design changes lead to meaningful improvements in user engagement and overall user
experience.
Tools/Skills
Python, A/B Testing, Hypothesis Testing, Data Visualization, Exploratory Data
Analysis
Comparative Analysis of Principal Component Regression (PCR) and Partial Least Squares Regression (PLS) on Air Quality Data Using R
This project provides a comparative analysis of Principal Component Regression
(PCR) and Partial Least Squares Regression (PLS) for predicting benzene (C6H6) concentrations
using the Air Quality Dataset from the UCI Machine Learning Repository. The primary goal is to
address multicollinearity and dimensionality reduction to improve predictive accuracy. Results
showed that PLS had superior performance with RMSE of 0.972 and R-squared of 0.974, while
PCR had a higher RMSE of 1.572 and R-squared of 0.933.
Tools/Skills
R, Principal Component Analysis, PLS, Regression Models, Data Cleaning
Regularized Regression: Comparing Ridge vs Lasso Models in Predicting College Graduation Rates in R
This project explores Ridge and Lasso regression techniques in predicting college
graduation rates using the College dataset. Ridge regression slightly outperformed Lasso
regression in terms of predictive accuracy, while Lasso offered more interpretable results by
performing feature selection.
Tools/Skills
R, Regularized Regression
Predicting Diabetes Onset Using Logistic Regression in R
This project focuses on predicting the onset of diabetes using logistic regression on
the Pima Indians Diabetes Database from Kaggle. The dataset includes variables such as glucose
concentration, blood pressure, BMI, and age. The model achieved an AUC value of 0.8396 and
an overall accuracy of 78.39%, effectively identifying key risk factors associated with diabetes.
Tools/Skills
R, Statistical Modeling, Machine Learning, Logistic Regression
Education
Education
Master of Science in Data Science and AI
Florida International UniversityExpected Graduation: December 2024
Bachelor of Business Administration in Finance
Florida International UniversityGraduated Summa Cum Laude in August 2021
Certifications
Data Analytics Bootcamp
IronhackJuly 2024
A full-time, 9-week bootcamp that equipped me with practical data analysis skills through live classes, labs, and projects. The curriculum covered:
• Python Programming: Data structures, control flow, functions, error handling, and OOP
• Data Wrangling: Data manipulation with Pandas, API integration, and web scraping with Beautiful Soup
• SQL: Database management, querying, and integration with Python
• Exploratory Data Analysis: Univariate, bivariate, and multivariate analysis, and hypothesis testing
• Data Visualization with Tableau: Creating interactive visualizations
• Machine Learning: Supervised and unsupervised learning techniques, feature engineering, and model evaluation with Scikit-Learn
• Advanced Technologies: Introduction to LLMs and cloud computing
• Version Control: Using Git for collaboration
Business Classes
Financial Accounting
Managerial Accounting
Corporate Finance
Financial Markets & Institutions
Financial Markets & Institutions
Financial Risk Management
Business Technology & Innovation
Marketing
Applied Business Statistics
Strategic Management
Data Science Classes
Artificial Intelligence Foundations
Data Science Foundations
Advanced Statistics
Data Mining
Advanced Data Analysis
Database Management
Data Visualization & Analytics
Advanced Database Systems
Business Analytics Applications
Testimonial

Nevine Acotanza
Chief Operating OfficeAndroid App Development
via Upwork - Mar 4, 2015 - Aug 30, 2021 testMaecenas finibus nec sem ut imperdiet. Ut tincidunt est ac dolor aliquam sodales. Phasellus sed mauris hendrerit, laoreet sem in, lobortis mauris hendrerit ante. Ut tincidunt est ac dolor aliquam sodales phasellus smauris test

Cara Delevingne
Chief Operating OfficerTravel Mobile App Design.
via Upwork - Mar 4, 2015 - Aug 30, 2021 testMaecenas finibus nec sem ut imperdiet. Ut tincidunt est ac dolor aliquam sodales. Phasellus sed mauris hendrerit, laoreet sem in, lobortis mauris hendrerit ante. Ut tincidunt est ac dolor aliquam sodales phasellus smauris test

Jone Duone Joe
Operating OfficerWeb App Development
Upwork - Mar 4, 2016 - Aug 30, 2021Maecenas finibus nec sem ut imperdiet. Ut tincidunt est ac dolor aliquam sodales. Phasellus sed mauris hendrerit, laoreet sem in, lobortis mauris hendrerit ante. Ut tincidunt est ac dolor aliquam sodales phasellus smauris
Awesome Clients
My Pricing
Make Your Single Page
Elementor / WPBakeryAll the Lorem Ipsum generators on the Internet tend to repeat predefined chunks as necessary
1 Page with Elementor
Design Customization
Responsive Design
Content Upload
Design Customization
2 Plugins/Extensions
Multipage Elementor
Design Figma
MAintaine Design
Content Upload
Design With XD
8 Plugins/Extensions
Design Make this Page
Elementor / WPBakeryAll the Lorem Ipsum generators on the Internet tend to repeat predefined chunks as necessary
5 Page with Elementor
Design Customization
Responsive Design
Content Upload
Design Customization
5 Plugins/Extensions
Multipage Elementor
Design Figma
MAintaine Design
Content Upload
Design With XD
50 Plugins/Extensions
Customize Your Single Page
Elementor / WPBakeryAll the Lorem Ipsum generators on the Internet tend to repeat predefined chunks as necessary
10 Page with Elementor
Design Customization
Responsive Design
Content Upload
Design Customization
20 Plugins/Extensions
Multipage Elementor
Design Figma
MAintaine Design
Content Upload
Design With XD
100 Plugins/Extensions
My Blog

The Easiest Way to Become a Successful Writer and Authors.
There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don’t look even slightly believable. If you are going to use a passage of Lorem Ipsum. You need to be sure there isn’t anything embarrassing hidden in the middle of text. All the Lorem Ipsum generators on the Internet tend toitrrepeat predefined chunks.

There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don’t look even slightly believable. If you are going to use a passage of Lorem Ipsum. You need to be sure there isn’t anything embarrassing hidden in the middle of text. All the Lorem Ipsum generators on the Internet tend toitrrepeat predefined chunks.
First, solve the problem. Then write the code.
Necessary, making this the first true generator on the Internet. It re are many variations of passages of Lo rem Ipsum available, but the majority have suffered alteration in some form, by injectedeed eedhumour, or randomised words which don’t look even slightly believable.
A programming language is for thinking about programs, not for expressing programs you’ve already thought of. It should be a pencil, not a pen.
There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don’t look even slightly believable. If you are going to use a passage of Lorem Ipsum. You need to be sure there isn’t anything embarrassing hidden in the middle of text. All the Lorem Ipsum generators on the Internet tend toitrrepeat predefined chunks. Necessary, making this the first true generator on the Internet. It re are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injectedeed eedhumour, or randomised words which don’t look even slightly believable.
There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don’t look even slightly believable. If you are going to use a passage of Lorem Ipsum. You need to be sure there isn’t anything embarrassing hidden in the middle of text. All the Lorem Ipsum generators on the Internet tend toitrrepeat predefined chunks. Necessary, making this the first true generator on the Internet. It re are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injectedeed eedhumour, or randomised words which don’t look even slightly believable.
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Quis ipsum suspendisse ultrices gravida. Risus commodo .
There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don’t look even slightly believable. If you are going to use a passage of Lorem Ipsum. You need to be sure there isn’t anything embarrassing hidden in the middle of text. All the Lorem Ipsum generators on the Internet tend toitrrepeat predefined chunks. Necessary, making this the first true generator on the Internet. It re are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injectedeed eedhumour, or randomised words which don’t look even slightly believable.
Necessary, making this the first true generator on the Internet. It re are many variations of passages of Lo rem Ipsum available, but the majority have suffered alteration in some form, by injectedeed eedhumour, or randomised words which don’t look even slightly believable.

The Quickest Way to Deliver Your Message? Make It Visual.
There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don’t look even slightly believable. If you are going to use a passage of Lorem Ipsum. You need to be sure there isn’t anything embarrassing hidden in the middle of text. All the Lorem Ipsum generators on the Internet tend toitrrepeat predefined chunks.

There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don’t look even slightly believable. If you are going to use a passage of Lorem Ipsum. You need to be sure there isn’t anything embarrassing hidden in the middle of text. All the Lorem Ipsum generators on the Internet tend toitrrepeat predefined chunks.
First, solve the problem. Then write the code.
Necessary, making this the first true generator on the Internet. It re are many variations of passages of Lo rem Ipsum available, but the majority have suffered alteration in some form, by injectedeed eedhumour, or randomised words which don’t look even slightly believable.
A programming language is for thinking about programs, not for expressing programs you’ve already thought of. It should be a pencil, not a pen.
There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don’t look even slightly believable. If you are going to use a passage of Lorem Ipsum. You need to be sure there isn’t anything embarrassing hidden in the middle of text. All the Lorem Ipsum generators on the Internet tend toitrrepeat predefined chunks. Necessary, making this the first true generator on the Internet. It re are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injectedeed eedhumour, or randomised words which don’t look even slightly believable.
There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don’t look even slightly believable. If you are going to use a passage of Lorem Ipsum. You need to be sure there isn’t anything embarrassing hidden in the middle of text. All the Lorem Ipsum generators on the Internet tend toitrrepeat predefined chunks. Necessary, making this the first true generator on the Internet. It re are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injectedeed eedhumour, or randomised words which don’t look even slightly believable.
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Quis ipsum suspendisse ultrices gravida. Risus commodo .
There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don’t look even slightly believable. If you are going to use a passage of Lorem Ipsum. You need to be sure there isn’t anything embarrassing hidden in the middle of text. All the Lorem Ipsum generators on the Internet tend toitrrepeat predefined chunks. Necessary, making this the first true generator on the Internet. It re are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injectedeed eedhumour, or randomised words which don’t look even slightly believable.
Necessary, making this the first true generator on the Internet. It re are many variations of passages of Lo rem Ipsum available, but the majority have suffered alteration in some form, by injectedeed eedhumour, or randomised words which don’t look even slightly believable.

Why We Don’t Have Technical Interviews for Technical Roles at Buffer.
There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don’t look even slightly believable. If you are going to use a passage of Lorem Ipsum. You need to be sure there isn’t anything embarrassing hidden in the middle of text. All the Lorem Ipsum generators on the Internet tend toitrrepeat predefined chunks.

There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don’t look even slightly believable. If you are going to use a passage of Lorem Ipsum. You need to be sure there isn’t anything embarrassing hidden in the middle of text. All the Lorem Ipsum generators on the Internet tend toitrrepeat predefined chunks.
First, solve the problem. Then write the code.
Necessary, making this the first true generator on the Internet. It re are many variations of passages of Lo rem Ipsum available, but the majority have suffered alteration in some form, by injectedeed eedhumour, or randomised words which don’t look even slightly believable.
A programming language is for thinking about programs, not for expressing programs you’ve already thought of. It should be a pencil, not a pen.
There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don’t look even slightly believable. If you are going to use a passage of Lorem Ipsum. You need to be sure there isn’t anything embarrassing hidden in the middle of text. All the Lorem Ipsum generators on the Internet tend toitrrepeat predefined chunks. Necessary, making this the first true generator on the Internet. It re are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injectedeed eedhumour, or randomised words which don’t look even slightly believable.
There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don’t look even slightly believable. If you are going to use a passage of Lorem Ipsum. You need to be sure there isn’t anything embarrassing hidden in the middle of text. All the Lorem Ipsum generators on the Internet tend toitrrepeat predefined chunks. Necessary, making this the first true generator on the Internet. It re are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injectedeed eedhumour, or randomised words which don’t look even slightly believable.
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Quis ipsum suspendisse ultrices gravida. Risus commodo .
There are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injected humour, or randomised words which don’t look even slightly believable. If you are going to use a passage of Lorem Ipsum. You need to be sure there isn’t anything embarrassing hidden in the middle of text. All the Lorem Ipsum generators on the Internet tend toitrrepeat predefined chunks. Necessary, making this the first true generator on the Internet. It re are many variations of passages of Lorem Ipsum available, but the majority have suffered alteration in some form, by injectedeed eedhumour, or randomised words which don’t look even slightly believable.
Necessary, making this the first true generator on the Internet. It re are many variations of passages of Lo rem Ipsum available, but the majority have suffered alteration in some form, by injectedeed eedhumour, or randomised words which don’t look even slightly believable.
Contact Me

Get in touch!
I’d love to hear from you! Whether you have a question about my projects, want to discuss data science and analytics, or have an exciting opportunity, feel free to contact me.
Email: davidhellerw@gmail.com