Fred Hebert is the author of 'Learn You Some Erlang for Great Good!', a
free online (also paid for, on paper) book designed to teach Erlang, and
of 'Erlang in Anger', a follow-up ebook about operating Erlang systems
in production. He works as a lead member of technical staff on Heroku’s
routing components, helping design, program, maintain, and operate large
scale distributed systems in the cloud, more often than not written in
Erlang, and is one of the maintainers of Rebar3, Erlang's newest built
tool.