Developed an AWS-based data pipeline to collect live options data every minute, storing over 1TB of market data in S3 for long-term retention.

Engineered a custom query framework to optimize time-based and symbol-based data access from S3, ensuring high-performance data retrieval.

Built a fully automated Lambda-driven trading system, capable of executing trades every minute based on real-time market data.

Reduced operational costs by 90% by migrating from GCP Firestore to AWS S3.

Generated hundreds of unit tests using AI and reviewed them for correctness.

Spear-headed various initiatives for a monolithic JavaScript, CoffeeScript, Node.js web app Eiger.io and its offline Electron version:

Integrated support for new 3D printer technology while maintaining compatibility with older printers.

Upgraded Node.js to version 18 and also upgraded dependent packages. This included rewriting the main offline testing suite to be compatible.

Created and debugged a long-term support version of the offline app.

Owned product maintenance by ticketing and advocating for improvements.

Mentored developers and established standards through reviewing their work.

Picked up and finished the work of other developers when needed.

Engineered a suite of tools to inform investment decisions in the stock market.

Wrote a Google Cloud function to collect options data every minute the market is open. This data, combined with purchased historical options data, is uploaded into a Firestore database to be queryable.

Created a React application to display data from the database and run backtests to see how different option strategies would have performed historically.

Created several Node.js backends to perform queries and call Google Cloud functions when requested by the frontend.

Open-sourced many of the supporting general-purpose JavaScript libraries on Github.

Led development and maintenance for the React frontend of a client-facing application, which presented job candidates to the client and allowed for various interactions such as rejecting a candidate and scheduling an interview.

Developed features mainly in browser-side JavaScript but also occasionally in server-side Java and Python through A/B testing and integrating with Indeed-specific services.

Set up a TypeScript and React project that allowed recruiters to more easily schedule subsequent interviews after an online meeting.

Mentored peers in frontend web development and JavaScript best practices.

Reviewed and created outlines of proposed architectural implementations.