Functional programmer, PhD in computer science, and quantitative finance developer. I've been programming Haskell for the past 19 years. --I write trading software and lead a dev team at Standard Chartered Bank.-- I manage testing and verification at Facebook.

Co-author of the book "Real World Haskell", and of the xmonad window manager. I founded the Haskell Platform project and wrote the bytestring and binary libraries for Haskell. I'm interested in building great software, type-driven compiler optimizations and high-performance data structures.

London (prev. Singapore, New York, Portland, Sydney).

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