▪ Architected and developed custom ETL service (Extract, Transform and Load) for data science and BI group. The ETL service:- Decreased time to pull data for model training by 1000X (from 3 days to several minutes) by utilizing high concurrency - Increased data integrity by performing canonical data tests and statistical checks before exposing new data for model training - Disconnected data science training infrastructure from production infrastructure, reducing possibility of production outages due to the analytics group and enabling independent scaling - Exposed all functionality through RESTful APIs - Provided clean web UIs for interacting with all ETL functionality▪ As the project lead on the ETL service, my roles included: - Developing all software and ensuring complete test coverage (code in Ruby, Javascript, R, and Bash) - Managing all devops and CI for production and staging environment utilizing Docker, CircleCI, and AWS - Writing ETL client libraries for use in training and production infrastructure - Conducting thorough statistical analysis of ETL data to ensure validity prior to initial use▪ Migrated the company from a monolithic architecture to a service oriented architecture by: - Launching new microservices that are easier to maintain and scale independently - Developing client libraries (gems and packages) for these microservices in both Ruby and R, enabling easy integration in other services and ensuring consistent and reliable behavior - Developing a Ruby gem for generating client libraries, empowering other engineers to create client libraries rapidly and with minimal effort for their new services▪ Launched new data sources for our machine learning training and prediction infrastructure▪ Scoped work for other data engineers, conducted code reviews, lead pair coding and demo sessions, aided in establishing processes for ensuring code quality and recruiting

Data Scientist Role:▪ Conducted exploratory data analysis to answer pressing questions of business leadership and provide insight into evolving market dynamics▪ Created predictive models to forecast driver quality and reliability. These classification models used logistic regressions and were modeled in R. They were at the heart of our dispatch intelligence engine, deciding which driver should be matched to each ride▪ Analyzed ride reliability metrics and created time series econometrics models to predict ride conditions, time to pickup, and likelihood of a failed ride scenario using the R programming language▪ Developed data visualizations to quickly and efficiently convey complex information in a simple and intuitive manner using R, shiny, and JavaScriptSoftware Engineer Role:▪ Designed RESTful APIs and developed multiple service oriented Ruby on Rails applications at the center of our infrastructure that handle in excess of 10M requests per day▪ Designed and developed the Rails application that provided the mobile API for Android and iPhone applications utilized by taxi and livery drivers throughout America. This service utilized MySQL and Redis as the primary data stores▪ Created SaaS tools utilized by transportation fleets that present business metrics, visualize data, and allow a small team to easily manage a large fleet. This uses Backbone.js, Ruby on Rails, and MySQL▪ Architected and programmed a dispatch intelligence engine that matches vehicle supply to ride demand in real-time based on vehicle availability, closest drive time, a multitude of real-time spatial components, and driver quality. This used the spatial features of PostgreSQL/PostGIS

▪ Recruited as lead server-side engineer to develop Barrel of Jobs, a social employment and recruiting website using Ruby on Rails▪ Successfully worked alongside designers and front-end engineers to design, develop, and launch the project ahead of schedule. The application used MySQL and Redis as the primary datastores

Launched outdoor advertising platform and mobile app, envisioned and tested products, hired and managed software engineering team utilizing Objective-C, Ruby on Rails, Java, and HTML/JavaScript/CSS

Provided analysis in order to manage the risk of the east portfolio in general and specific contracts in particular;Traded Financial Power in NEPOOL, NYPP and PJM markets;Developed forecast models for prices and expected market behavior, and conducted general equilibrium analysis using game theory modeling.