Work on database-based application (Rust/Postgres) that collects and indexes data from Ethereum with focus on throughput and performance of the storage layer and database. Design and implement storage subsystem that defines an efficient schema through GraphQL and translates GraphQL queries into SQL, improving throughput by an order of magnitude. Added time-travel support so that queries run against a fixed past state. Create various tools to understand and inspect the performance of millions of queries per day, and dynamically manage the load caused by those queries.

Led the rewrite of Razor, a PXE provisioning framework. Spearheaded the engineering of the i18n effort for Puppet Enterprise. Led the development of Puppet's application management features. Chaired Puppet's architecture group.