Morin is the author of Homemakers: A Domestic Handbook for the Digital Generation, published by HarperCollins, and as of 2021, writes a business advice column, "Dear Brit", in Entrepreneur Magazine.

In 2011, at age 25, Morin left Google to start Brit + Co,[5] a San Francisco-based website and lifestyle brand targeted at women.

Led by Intel Capital, the company received $20 million in Series B funding in 2015, allowing them to make their first acquisition of a DIY app called Snapguide.

[15] In 2022, Morin and fellow entrepreneur Jamie Schmidt co-founded BFF, an online community to educate women and non-binary people on web3.

[16][17] From 2020 - 2022 Morin hosted the podcast "Teach Me Something New" in partnership with iHeartMedia, interviewing guests such as Ashton Kutcher, Mila Kunis, Meena Harris and Glennon Doyle.