Sean Cribbs

Staff software engineer at Postmates

Sean Cribbs is a software engineer and leader at Postmates, focusing on scalable and reliable core services. Previously, he held positions at Comcast Cable and Basho Technologies. A decade-long enthusiast of the BEAM, Sean has contributed to both OTP and Elixir and created the parsing tool Neotoma.

Sean is also the creator of Neotoma and a former CRDT evangelist.

Past Activities

Sean Cribbs
Code BEAM SF 2019
01 Mar 2019
14.30 - 15.15

Chemanalysis: Dialyzing Elixir

No one wants to ship bugs in a production system, especially embarrassing ones! Dialyzer is a post-compilation type-checker that has found more bugs in my code than I can count, saving me a lot of time and frustration. This talk will discuss briefly what Dialyzer is, how to use it in Elixir projects, and go in-depth on three bugs it helped me find in the Elixir compiler and standard library.


Encourage developers to use Dialyzer in their Elixir projects and improve the ecosystem.


Developers who want to improve the correctness and robustness of their Elixir code.