Greg Pfeil Email & Phone Number

Focus on functional programming and technical leadership.

Denver, Colorado, US

Palo Alto, CA, US

San Francisco, CA, US

Boulder, CO, US

• was the first hire at the company;
• implemented a expression-based SQL compiler with extensions for NoSQL operations [Quasar];
• designed a flexible compiler IR that adapts to the capabilities of various backends;
• implemented multiple compiler backends, including MongoDB, Spark, & JavaScript;
• mentored other developers in advanced functional programming techniques;
• contributed to the Scala compiler & many Open Source libraries; and

US

• converted a prototype musical composition tool to a production-quality product [Opusmodus];
• contributed to the implementation of programming languages in Haskell for darpa-backed computer security project, including compilation to an experimental hardware architecture and created applications to demonstrate.
• developed data model and performed overall system optimizations on the correlation engine of a high-level network intrusion system;
• performed benchmarking and optimization of large-scale airline reservation system [ita];
• designed and implemented a financial term sheet simulator for the Evolvable Law project at Harvard’s Berkman Center for Internet & Society;
• developed iOS applications for various clients, including a rebrandable news & information distribution system and a prototype assistive communications application for people with disabilities; and

Cambridge, MA, US

Seattle, WA, US

• conceived, designed, and developed a declarative logic system written in Common Lisp to simplify Website features while improving parallelism and performance [Product Discovery Service];
• revamped a C++ content-scheduling system to add a feedback-based learning component, and to make it modular so third-parties could schedule new content [Upsell Cart];
• performed Weblab (A/B testing) experiments, acting as analyst in interpreting the data;
• personally responsible for millions of dollars in gross profit (as measured by Amazon’s Weblab system);
• spearheaded skunkworks effort to support Lisp development; and
• wrote a generic structured-data retrieval service in C++ to replace parsing of BDB values on the Web servers.

Philadelphia, PA