
Career and work
English co-founded KAYAK in 2004 and served as its chief technology officer. KAYAK went public in 2012 and was subsequently acquired by Priceline for $1.8 billion. English left the company at the end of 2013. [2][6]
He has gone on to found or co-found a series of technology companies, including Lola, GetHuman, Moonbeam and Boston Venture Studio. Lola was sold to Capital One, while Moonbeam was later acquired by Audacy. English has also co-founded nonprofit initiatives including Winter Walk, Summits Education and Embrace Boston. [3]
What has been publicly discussed
- English has publicly identified himself as having bipolar II. He says he was first diagnosed with bipolar illness at age 25 and has been open about the diagnosis for more than a decade. [1]
- He has described becoming increasingly comfortable discussing it publicly despite concerns that disclosure could affect how potential business partners viewed him. He has said that the benefits of openness—including connecting with others and helping people through his story—ultimately outweighed those concerns. [1]
- English has described hypomanic periods in which he could be highly productive, write prolifically, and function on very little sleep. He has also described less manageable aspects of these periods, including grandiosity, irritability, impulsivity, and drinking too much. [1]
- His depressive episodes have been very different. English has said that during severe periods he spent days on the floor, experienced panic attacks, and feared that the depression would never end. He has said that both sides of the illness affected his relationships and his health. [1]
- English has said that he has learned to manage bipolar disorder through therapy and medication, along with support from close friends and family. He has also described meditation and mindfulness as helping him become less reactive and better able to manage anger and irritability. [1]
- English has said that things affect him less now than they did in his twenties, and that when he becomes angry, it passes much more quickly. He describes himself as generally happy and optimistic, while still referring to bipolar disorder as an illness he continues to live with. [1]
- English has become increasingly public about living with bipolar disorder and has encouraged other people with the diagnosis to share their experiences. He has said that he no longer feels a need to hide his diagnosis and encourages people with bipolar disorder to confide in trusted people rather than remain isolated. [4][1]
- He founded the Bipolar Social Club to create a peer network where people with bipolar disorder can share stories and information. English has said that one of the main ways to reduce stigma is for more people with bipolar disorder to tell their stories. [5]
“Secrecy and shame are the enemy of healing.”
— Paul English [1]
Sources and other resourcesExpand to view the sources used in this profile and resources to learn more.
Sources used for this profile
The following sources contain information that supports the claims made on this page.
“Bipolar Illness” — Paul English English’s first-person account of bipolar II, diagnosis, hypomania, depression, treatment, disclosure, and stability.
article or webpageKAYAK — company announcement Confirms English as KAYAK co-founder and former CTO.
article or webpagePaul English — Founder Stories Documents companies and nonprofits English has founded or co-founded.
article or webpage
View all 6 sources
Psych Central interview, 2023 Covers disclosure, stigma, support, and the Bipolar Social Club.
podcast or transcriptBipolar Social Club — About Documents the peer network and English’s role as founder.
profile or biographyThe Boston Globe — KAYAK acquisition Supports KAYAK’s $1.8 billion acquisition.
article or webpage
Learn more
Recommended books and other resources about Paul English and their experiences.
- “How Kayak Co-Founder Paul English Manages and Thrives Through His Bipolar Disorder” — Harvard Business Review, 2021Podcast
Long-form discussion of bipolar disorder, leadership, work, relationships, and vulnerability.
- Bipolar Social Club videosArticle
Talks and interviews about living with bipolar disorder.
- Paul English — TEDx talksArticle
Talks including material about the Bipolar Social Club.
- A Truck Full of Money — Tracy KidderBook
A biography of English covering his technology career, entrepreneurship, and experience with bipolar disorder.