Lead the development of a programmable business rules system that is responsible for controlling all aspects of payment processing within the Google Payments Platform. The rules engine is used by hundreds of developers across many teams and integrated into tens of services/systems.

Responsible for correctness, safety, performance, resource efficiency, and developer velocity using the system. The system consists of a proprietary programming language, compiler, interpreter, client APIs, monitoring mechanisms, and rollout safeguards.

Created multi-quarter/-year roadmaps that included quarterly OKR planning. Mentored other engineers who received promotions for their work. Conducted interviews and performed Java readability reviews.

Lead development of the Ethereum client now known as Hyperledger Besu from an empty repository to a fully functional network peer.

Implemented the Ethereum state replication protocol including the the Ethereum Virtual Machine (EVM), Patricia Merkle Trie, storage layer, hard forks, and other aspects of block validation and synchronization. Reviewed design and implementations of the networking, synchronization algorithms, and RPC APIs.

Scoped work as the development team grew to over 30 developers spread across the world. Participated in Ethereum Core Developer calls on behalf of ConsenSys.

Designed, prototyped, and implemented portions of a new intelligent resource manager for the Chromium Web browser (e.g. Google Chrome). Created infrastructure for per-domain CPU profiling infrastructure and extracted insights from large-scale user studies. Also conducted code coverage experiments to inform future design decisions and motivate new Web platform APIs.

Member of what is now the Edge Computing Laboratory at Harvard University (https://edge.seas.harvard.edu/).