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Joey Hernandez

Joey Hernandez

Data Scientist



My Portfolio Highlights

My New Course

Introduction to Python

Quantitative detective, uncovering the truth hidden in the depths of data.

My Work

Take a look at my latest work.


Python Data Science Toolbox (Part 2)


Python Data Science Toolbox (Part 1)


Introduction to PySpark


Introduction to Python

DataCamp Course Completion

Take a look at all the courses I’ve completed on DataCamp.

My Work Experience

Where I've interned and worked during my career.

AT&T | May 2023 - Aug 2023

Data Science Intern

- Utilized advanced time series models to accurately forecast cash flows, resulting in a 1.25% reduction in the MAPE (over $1 Billion/annual improvement in estimated forecasting accuracy) compared to the company's previous model. - Leveraged Databricks to design an interactive dashboard that facilitated efficient model comparison and displayed critical results. - Conceptualized and executed a comprehensive application using OpenAI's API, combined with front-end and back-end programming, to assist users in understanding and querying time series data. - Orchestrated a classification project aimed at predicting customer callback reasons, further enhancing the customer service strategy. - Cultivated expertise in time series forecasting and application, cloud-based operations, and data processing with PySpark. - Worked extensively with cutting-edge technologies including PySpark, Databricks, and Microsoft Azure to drive data-centric solutions.
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Greater Than Training | Nov 2018 - May 2023

Personal Trainer


Kforce Inc | Dec 2017 - Dec 2018

Account Manager


AT&T | Mar 2014 - Mar 2017

Sales Associate


My Education

Take a look at my formal education

Master of Science - MS, Data ScienceSouthern Methodist University | 2024
Bachelor of Business Administration - BBA, Business Administration and Management, GeneralThe University of Texas at Arlington | 2015

About Me

Joey Hernandez

M.S. - Data Science Program at Southern Methodist University

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