Image of Mark Jeffrey

Mark Jeffrey's Email & Phone Number

Published Author @ Harper Collins

Mark Jeffrey's Email Addresses

m****[email protected] Personal Email
m****[email protected] Personal Email

Mark Jeffrey's Phone Numbers

(213) ***-*155 Phone number

Mark Jeffrey's Work Experience

Guardian Circle, Inc.

Co-Founder and CEO

January 2016 to Present

Harper Collins

Published Author

January 2011 to Present


Mark Jeffrey Consulting

January 2011 to January 2016

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Mark Jeffrey's Professional Skills Radar Chart

Based on our findings, Mark Jeffrey is ...


What's on Mark Jeffrey's mind?

Based on our findings, Mark Jeffrey is ...

57% Left Brained
43% Right Brained

Mark Jeffrey's Estimated Salary Range

About Mark Jeffrey's Current Company

Harper Collins

Frequently Asked Questions about Mark Jeffrey

What company does Mark Jeffrey work for?

Mark Jeffrey works for Harper Collins

What is Mark Jeffrey's role at Harper Collins?

Mark Jeffrey is Published Author

What is Mark Jeffrey's personal email address?

Mark Jeffrey's personal email addresses are and m****[email protected] and m****[email protected]

What is Mark Jeffrey's business email address?

Mark Jeffrey's business email address is [email protected]***.***

What is Mark Jeffrey's Phone Number?

Mark Jeffrey's phone (213) ***-*155

What industry does Mark Jeffrey work in?

Mark Jeffrey works in the Internet industry.

About Mark Jeffrey

📖 Summary

Co-Founder and CEO @ Guardian Circle, Inc. From January 2016 to Present Published Author @ Harper Collins From January 2011 to Present Mark Jeffrey Consulting @ Consultant From January 2011 to January 2016 CEO & CoFounder @ ThisWeekIn, Inc. From January 2010 to January 2011 CTO @, Inc. From January 2006 to January 2010 Consultant / Podcaster / Author @ Independant Consultant From January 2005 to January 2006 Co-Founder / Chief Product Officer @ ZeroDegrees Inc., An Operating Division of InterActiveCorp (acquired by IAC in 2004) From January 2003 to January 2005 Consultant @ Red Swoosh, Inc. (acquired by Akamai 2007) From January 2001 to January 2002 Founder / CEO @ SuperSig, Inc From January 1999 to January 2002 Co-Founder / VP Product @ The Palace, Inc. (acquired: 1999 by From January 1995 to January 1999

Mark Jeffrey’s Personal Email Address, Business Email, and Phone Number

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In a nutshell

Mark Jeffrey's Ranking

Ranked #1,353 out of 27,060 for Published Author in California

Mark Jeffrey's Personality Type

Extraversion (E), Intuition (N), Thinking (T), Judging (J)

Average Tenure

2 year(s), 0 month(s)

Mark Jeffrey's Willingness to Change Jobs



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Mark Jeffrey's Social Media Links

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