Leah Culver is cofounder and CTO of Breaker, which is a social podcast listening and discovery app. They went through YC in the Winter 2017 batch. Leah’s also an author of both the OAuth and oEmbed API specifications.
Tom Sparks is an engineer on the YC Software team. He also cofounded Cryptoseal which went through YC in the Summer 2011 batch and was acquired by CloudFlare in 2014.
The YC podcast is hosted by Craig Cannon.