Daniel Casner
Principal Product Engineer at Sonos, Inc.
San Francisco, California, United States
Summary
👤
Senior🎓
Top SchoolDaniel Casner is a Principal Product Engineer based in San Francisco with over 14 years of hands-on experience turning complex hardware-software concepts into mass-produced consumer products. He has led cross-functional teams through architecture, certification, and commercialization at companies like Sonos and Anki, delivering multiple product generations and saving millions through design and operations optimizations. Comfortable diving from system architecture to firmware and DevOps, he has driven battery-life improvements by 5x, architected distributed multiprocessor robots, and written low-level kernel and gateware for extreme environments. Daniel combines technical mentorship and stakeholder alignment with a knack for pragmatic risk reduction—evident from establishing JDM partnerships and shepherding product roadmaps into compliant, manufacturable designs. He also contributes to open-source tooling, including maintaining a Google Hangouts bot with practical backend and DevOps improvements, reflecting a persistent maker mentality alongside product leadership.
14 years of coding experience
19 years of employment as a software developer
BA Physics Computer Science Japanese, BA Physics Computer Science Japanese at Lawrence UniversityMS Computer and Systems Engineering, MS Computer and Systems Engineering at Rensselaer Polytechnic InstituteKanda University of International Studies
Japanese
Github Skills (11)
bots10
google-hangouts10
python10
chatbot10
googlebot10
devops9
aiohttp9
api8
bash8
apim8
configuration-management8
Programming languages (3)
Github contributions (5)
hangoutsbot/hangoutsbot
Dec 2015 - Feb 2016
Google Hangouts bot
Role in this project:
Backend & DevOps Engineer
Backend & DevOps EngineerContributions:6 commits, 3 PRs, 13 comments in 2 months
Contributions summary:Daniel primarily contributed to the development and maintainability of the Google Hangouts bot. Their work involved adding a "showme" plugin to retrieve images from URLs, implementing a Raspberry Pi init.d script for automated startup, and introducing an option to automatically add the bot's alias in one-to-one conversations. Furthermore, the user enhanced the project's structure and usability by moving the "showme" plugin into its own directory, adding a license, improving help text, and adding a readme file.
google-hangoutspythonbothangoutschatbot
DanielCasner/autofarm
Oct 2016 - Mar 2021
Contributions:51 pushes, 3 branches in 4 years 6 months
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