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 • created a generalized recursion scheme library for Scala [Matryoshka].

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 novel security features like information flow control [crash-safe];• 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 • developed best-selling educational iOS games in Objective-C for toddlers [Learning Touch].

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