Hi. I'm Johana Luna.

I'm a Data Scientist with a Computer Science degree and experience in Looker, Power BI, Tableau, Python, Machine Learning, Neural Networks, SQL and Statistics (Resume)

Professional Experience

Shutterfly Inc (Ecommerce)

Oct 2020 - Present
  • Saved $2.3M in refunds for late shipments by developing a random forest model to predicts the final state of a product (shipped on-time/ late)
  • Decreased annual shipment contract cost with the logistic carriers by $9M, with cross functional collaboration with the Finance and Supply Chain teams by creating new metrics to allocate the ship cost to an item level
  • Developed executive dashboards to monitor Supply Chain KPIs in real time to make decisions over 27M shipments per year using SnapLogic and Looker to connect databases and make daily reports

Claro (Telecomunications)

Nov 2014 - Jan 2016
  • Led 4 people in charge of managing databases with more than 650 million monthly records
  • Reduced audit times by 47% through automating the process using SQL Scripts, ACL, Excel and other Bi tools

Nueva EPS (Ensurance)

Jul 2013 - Nov 2014
  • Automated information extraction processes of ~6 Million records with sensitive information
  • Led the auditing of the company's systems to make sure they comply with government regulations

PWC (Auditing)

Feb 2013 - Jul 2013
  • Performed systems audits of major companies in telecommunications, oil and banking
  • Diagnosed information systems' key controls and checked the compliance with international standards

Here are some projects I made recently

Sudoku Solver

The Sudoku Solver (Omegag2020) API solves Sudoku puzzles using human tecniques.
 Our API can also predict the difficulty level with a logistic regression model.

Using image processing and computer vision, the user can transfer analog paper Sudoku puzzles to a digital form and play with them (See Documentation).


Subreddit Recommender

Deployed in Amazon Web Services (AWS), this API help users find the best place to post on Reddit.

Subreddit Recommender can suggest the most optimal subreddit using natural language processing (NLP) with a KNN model (See Documentation).


AirBnB Predictor

Deployed on Heroku, AirBnB Predictor uses a linear regression model to predict an optimal pricing strategy for an AirBnB in Berlin (See Documentation).



Modeling Chicago Crime Data Set

Exploratory data analysis of Chicago's crimes extracted from the Chicago Police Department.
This article explores crime data in Chicago and showcase the implementation of a predictive model for arrests in Chicago (See Documentation).


Rising Incidence of Cancer in New York

Exploratory data analysis of new patients with cancer.
This analysis intends to find if there is a correlation between the insidence rate globally and the State of New York (See Documentation).


Technical Skills

Python

SQL

Machine Learning

Neural Networks

Data Visualization

Statistics



BI Tools

Looker

Power BI

Tableau

Languages

Spanish

English

French

Contact Me