John O'Brien Email & Phone Number
Chief Executive Officer @ NashTech
5 free lookup(s).
No credit card required.
John O'Brien Location
- London, GB
John O'Brien Work
- 2023 - now Chief Executive Officer @
- 2019 - 2023 Vice President @
- 2018 - 2019 Self Employed @ Self Employed
- 2018 - 2018 Senior Vice President @
- 2017 - 2018 Global Chief Strategy Officer and Executive Vice President EMEA @
- 2011 - 2018 Executive Vice President EMEA @
- 2007 - 2011 Vice President @
- 2005 - 2007 Partner @
- 1986 - 2005 Partner @
John O'Brien Education
- University of Cambridge
BA/MA (History)
1983 - 1986
John O'Brien Summary
- John O'Brien, based in London, GB, is currently a Chief Executive Officer at NashTech. John O'Brien brings experience from previous roles at Gartner, Self Employed, Infor and Hitachi Consulting. John O'Brien holds a 1983 - 1986 BA/MA in History @ University of Cambridge. John O'Brien has 1 emails and 1 mobile phone numbers on RocketReach.
5 free lookup(s).
No credit card required.
If you need more lookups,
subscriptions start at $34 USD/month.
Looking for a different John O'Brien?
Find contact details for 700 million professionals.
Others Named John O'Brien
John O'Brien
President and CEO
Washington, DC, US
John O'Brien
President and CEO
Washington, DC, US
John O'Brien
Chief Revenue Officer
London, GB
John Obrien
President, Altagas Services US
Dallas, TX, US
John O'Brien
Chief Administrative Officer (CAO)
Denver, CO, US
John O'Brien
CEO
Moriches, NY, US
John O'Brien
CEO
Daphne, AL, US
John O'Brien
Managing Director
New York, NY, US
John O'Brien
Chief Executive Officer
London, GB
Top NashTech Employees
Natalie Whittlesey
Senior Client Community Director
Lichfield, GB
Tom Lee
Director
England, United Kingdom
Chris Weston
Senior Technology Consultant
Tamworth, GB
Lauren Hancox
Global Content Lead
Nottingham, GB
David Thorley
Global Annuity Services Director
Wokingham, GB
Bhavya Aggarwal
CTO India
Noida, UP, IN
Susann Ulrich
Senior Vice President Business Development
Denver, CO, US
Martin Brown
Head of Tax
Slough, GB
Johny Mandal
Vice President, Culture and Development
Delhi, India
John O'Brien
Chief Executive Officer
London, GB
James Hilton
Finance Director
London, GB
How It Works
Get a Free Account
Sign up for a free account. No credit card required. Up to 5 free lookups. 
Search the #1 Contact Database
Get contact details of over 700M profiles across 60M companies - all with industry-leading accuracy. Sales and Recruiter users, try out our Email Finder Extension. 
Use our AI-Powered Email Finder
Find business and personal emails and mobile phone numbers with exclusive coverage across niche job titles, industries, and more for unparalleled targeting. Also available via our Contact Data API. 
G2 Crowd Trusted
300K+ Plugin Users
© 2026 RocketReach.co