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46th President of the United States, husband to @FLOTUS, proud dad & pop. Posts may be archived: http://whitehouse.gov/privacy

Product manager @ Google.com, ex-Amazon; Adjunct professor @ MICA.edu and Chatham.edu; MBA from CMU.edu; Professional photographer. Language : 中文 / EN

My newsletter: https://billionyearoldcarbon.substack.com

Blockchain storyteller. Bennington MFA (fiction/nonfiction), Columbia MBA (finance), Columbia BA (music). Committed to diversity in publishing and technology.

Blogging about algorithmic trading, Python utilities and passive income opportunities.