Rafael Rubenstein

Brooklyn, NY

Skills

  • Programming Languages:Python (Scikit-learn, Pandas, MatplotLib, Selenium, BeautifulSoup, Numpy, Scipy, Tensorflow, Surprise),SQL,Git,C#, HTML & CSS, JavaScript (React,Node,Express) , PHP, Java
  • Tools/Technologies: Power BI, Sql Server, SQLite, Mysql, Postgresql, GitHub,Streamlit, Vercel, Flask, Django, AWS (DynamoDB, Lambda, EC2, S3,Redis,Redshift),Azure Dev Ops, Microsoft & Google Suite

Experience

Data Analytics & Engineering | Hamaspik Of Kings County | Jul 2023 - present

  • Spearheaded the analysis, cleaning & creation of a comprehensive data infrastructure using SQL Server, empowering stakeholders to make informed decisions
  • Engineered a financial report within my initial two weeks improving the finance department's operations, directly contributing to a 3% uplift in profitability by rectifying revenue leaks and optimizing invoice management processes using SQL, Python, & Power BI
  • Orchestrated & deployed sophisticated data pipelines using Python, integrating disparate data sources to furnish a cohesive analytical framework.
  • Designed & delivered multifaceted reports utilizing Power BI, Python, & SQL, catering to diverse departmental needs leading to a 32% enhancement in workflow efficiency, providing actionable insights & fostering data-driven decision-making

Financial Data Scientist | Gemini Global Ventures | Aug 2021 - Gemini Global Ventures

  • Analyzed large datasets using machine learning techniques for predictive analysis, classification & pattern recognition
  • Utilized statistical analysis, feature engineering, & data mining methods to extract valuable insights & drive decision-making
  • Create visually engaging & informative reports, presenting insights to stakeholders & guiding business strategy
  • Process data from Postgresql using SQL, streamlining the data acquisition process for analysis & reporting purposes

Office Manager/Controller | Platinum Renovations 1 LLC | Jun 2019 - Aug 2021

  • Responsibilities included payroll, AP, AR, cost analytics, contrast profitability with overhead, in an agile & stressful environment to ensure all deadlines were met
  • Trained multiple employees in data entry, payroll & cost reports

Additional Experience

Data Science Fellow | CUNY Tech Prep | Jul 2022 - present

  • Selected for a competitive data science fellowship with students from across the 11 CUNY senior colleges where Fellows create technical projects using tools such as Python 3, Jupyter Notebooks, Pandas, Numpy, Scikit-learn,TensorFlow & SQL
  • Participate in weekly courses & learn industry best practices for exploratory data analysis (EDA), feature engineering, data collection & processing, statistical modeling, data visualization, machine learning techniques, data science process, & big data

Projects

MovieFinder,(In Progress)

  • Developing a web application that recommends movies to users based on multiple features, & then tells the users where they can watch the movies
  • Leveraging Pandas & Numpy for efficient data cleaning & preprocessing to prepare for model training
  • Utilizing a hybrid machine learning approach with Matrix Factorization via SciPy, SVD++ for collaborative filtering & XGBoost for feature-based recommendations
  • Building the application with React, Node.js,Express.js, & PostgreSQL for storing user data & movie information.

Stonks LLC

  • Led a team of 3 to develop a web application that uses company data to classify stocks as undervalued/overvalued
  • Utilized Pandas, Matplotlib, Seaborn & Numpy for EDA, data cleaning, & visualization
  • Applied feature engineering methods to find the best features for the model increasing precision by 26%
  • Designed ML pipeline using Scikit-learn to build & evaluate different models increasing productivity by 75%
  • Deployed web application using Streamlit & Pickle allowing users to predict company’s worth
  • Scraped financial data using BeautifulSoup & yFinance reducing cognitive overload for user by 90%

Education

B.S, Computer Science | Brooklyn College

M.C.S, Data Science | University Of Illinois Urbana-Champaign