Mark: Email & Phone Number

Opt-Out

Founder at Krayf|San Francisco Bay Area, United States

Position:

Founder at Krayf

Location:

San Francisco Bay Area, United States

View Mark's Email

Up to 10 free lookups. No credit card required.

Last updated: 2026-07-05

Updated: 2026-07-05

Found email addresses for Mark:

Business emails:

g*************k@gmail.com

Personal emails:

m***@linuxcommunity.com,

****@gmail.com,

m***@aol.com,

m***@airspace.co

Found phone for Mark:

+1-623-***-**14

A different Mark?

Work Experience 17 years

Founder at Krayf

Oct 2022 - Current

Chief Financial Officer & Part time COO at Airspace Defense

Jan 2019 - Jan 2021

Head of Product-Finance & COO at Airspace Defense

Jan 2019 - Jan 2021

Director of Finance and Strategic Partnerships at Walmart

Jun 2017 - Sep 2019

Technical Marketing and Technical Standards Program Management at Linux

Mar 2015 - Sep 2015

Senior Manager Finance Operations at Pitney Bowes Inc.

Jan 2014 - Mar 2015

Finance Manager, Business Transformation at Pitney Bowes Inc.

Jan 2012 - Jan 2014

Private Equity Investor at MatlinPatterson Capital Management LP

Jun 2010 - Sep 2012

Investment Banking Analyst at Bank of America Merrill Lynch

May 2009 - Jun 2010

Mark started working in 2009, then the employee has changed 6 companies and 8 jobs. On average, Mark works for one company for 1 year 11 months.

Their professional focus is Adaptive Insights, Analytical Skills, and Annual Budgeting across 3 core areas.

Education

Doctor of Law - JD at Harvard Law School

MBA Exchange with INSEAD at The Wharton School

Master of Business Administration - MBA at INSEAD

Albert Dorman Honors College at NJIT

Frequently Asked Questions

What is Mark's email address?

SignalHire found verified email addresses for Mark, both business and personal. Their business email is g*************k@gmail.com, and personal emails include m***@linuxcommunity.com, ****@gmail.com, and m***@aol.com.

What is Mark's phone number?

SignalHire found a verified phone number for Mark: +1-623-***-**14.

How do I contact Mark at Krayf?

You can reach Mark through SignalHire by unlocking their verified email and direct phone number (free signup, no credit card needed). SignalHire is the fastest route if you need their contact details immediately.

What is Mark's professional background?

Mark has 17 years of professional experience. They have held roles including Chief Financial Officer & Part time COO, Head of Product-Finance & COO, and Director of Finance and Strategic Partnerships at companies such as Airspace Defense, Airspace Defense, and Walmart. Their education includes Doctor of Law - JD from Harvard Law School, and MBA Exchange with INSEAD from The Wharton School.

Is Mark's contact information up to date?

Yes. Mark's SignalHire profile was last updated on 5 July 2026, reflecting their current position as Founder at Krayf in San Francisco , CA, United States.

Mark Namesakes

Name

Company

Position

Mark

Treeminer, Inc.

CEO

Get contacts

Mark

U.S. SECURITY SUPPLY, INC.

Account Manager

Get contacts

Mark

BloodnFire Ministries

Director

Get contacts

See more profiles

Similar profiles

Name

Company

Position

Rachel Hillson

Rachel Hillson Adv. Family and inheritance legal services and consulting (עו"ד לענייני משפחה וירושה)

Founder

Get contacts

Anna Pakosz

Stages of Limbo

Founder

Get contacts

Dror Zbenovich

Soltera - Big on Data

Founder

Get contacts

Tal Even

Even Better

Founder

Get contacts

Liora Shoshani

Bekav Ha’eichut - בקו האיכות

Founder

Get contacts

Yakir Sabag

Capitán

Founder

Get contacts

See more profiles

Other employees at Krayf

Name

Company

Position

Mark Justin

Krayf

Co-founder and Head of Strategic Finance

Get contacts

Mark Justin Castellani

Krayf

Co-Founder & CEO

Get contacts

See more profiles

Data Privacy

GDPR COMPLIANT

SignalHire complies with the General Data Protection Regulation (GDPR). SignalHire follows GDPR requirements, including but not limited to rights of data subjects to access, correct, or delete their personal information and supports the right to be forgotten.

CCPA COMPLIANT

SignalHire is CCPA-compliant and provides California residents the right to know, access, opt out, and request deletion of their personal data.