- Trained gradient boosted decision tree models using LightGBM for volatility and return prediction- Utilized Ray framework for distributed training to optimize iteration speed- Implemented custom portfolio optimization with CVXPY- Conducted backtesting and out-of-sample validation (16+ years)- Integrated price, fundamental, options, and sentiment data for comprehensive market analysis- Trained dense models for volatility and short-term equity return prediction- Developed process-based local runtime/actor system runnable from Jupyter notebooks- Developed NLP convolutional models using TensorFlow for social media sentiment analysis - Created tweet classifier and entity classifier models - Annotated 20,000+ tweets using Label Studio- Trained logistic regression models for S&P 500 next-day return prediction

- Served as Principal Software Engineer focused on total system architecture and as an individual contributor focused on card-sending products- Served as interim technical director- Served as product team lead with focus on card sending products- Served as Lead Engineer fostering adoption of type-driven development and functional programming practices- Wrote priority-based network task system for frontend- Directed conversion of React application to TypeScript- Developed statically typed routing API for React frontend- Wrote custom code generation logic for frontend GraphQL queries & mutations- Created largely automated GraphQL query tests- Developed tooling to detect backwards incompatible changes to the GraphQL API- Created new GraphQL API- Helped create the SendOutCards React JavaScript application- Rewrote the iOS app in Swift with iPad support- Created new version of the SendOutCards REST API written with the Django REST Framework- Wrote the Android version of the SendOutCards App- Finished development of the SendOutCards Objective-C iOS App

Developed fifteen iOS apps to date: Riddle Me Endless, 1Feed, UPMA Liquid Gold and many more.

Responsible for development of the Android version of the Glasses.com Virtual-Try-On app.

Developed the Android version of the Heritage Makers: Photo Safe app.