[hugopeixoto]

The blog post describes this at the end:

  In particular, Isaac (a Coinbase user in Canada and previous Google intern)
  sent us a nearly completed Android app totally unprompted,
  and was kind enough to open source it.

[bjcubsfan]

Also relevant:

"and brought him on board to continue working on it."

[eric_bullington]

Sorry, I missed that. Thanks for the info. And cool that he got hired.