Cto
Current
Jan 2016 - Present
AeroLeads people directory · profile
John Thielens Email & Phone Number
CTO at Cleo
at
Cleo
1 work email found
@cleo.com
10 phones found area 650, 815, 678, 404, and 905
LinkedIn matched
✓ Verified Jun 2026
4 data sources
Profile completeness 100%
Who is John Thielens? Overview
A concise factual answer block for searchers comparing this professional profile.
Quick answer
John Thielens is listed as CTO at Cleo at Cleo, based in Alpharetta, Georgia, United States. AeroLeads shows a work email signal at cleo.com, phone signal with area code 650, 815, 678, 404, 905, and a matched LinkedIn profile for John Thielens.
John Thielens previously worked as CTO at Cleo and VP of Technology at Cleo. John Thielens holds Ab, Applied Mathematics from Harvard University.
Company email context
Email format at Cleo
This section adds company-level context without repeating John Thielens's masked contact details.
{first_initial}{last}@cleo.com
86% confidence
AeroLeads found 1 current-domain work email signal for John Thielens. Compare company email patterns before reaching out.
Profile bio
About John Thielens
John Thielens is a CTO at Cleo at Cleo. He possess expertise in cloud computing, enterprise software, product management, saas, software development and 45 more skills. Colleagues describe him as "John is an an amazing technology evangelist with a deep understanding of messaging and the software development process. He solves complex problems, engages customers at every level, presents an engaging vision and a strong foundation for the future of messaging, managed file transfer, and email technologies. He is a true asset to any organization and I hope to work with him again in the future." and "From all the people I have met, John is one of the smartest and most valuable at Tumbleweed."
Listed skills include Cloud Computing, Enterprise Software, Product Management, Saas, and 46 others.
Current workplace
John Thielens's current company
Company context helps verify the profile and gives searchers a useful next step.
13 roles · 43 years
John Thielens work experience
A career timeline built from the work history available for this profile.
Vp Of Technology
Jan 2014 - Jan 2016
Chief Architect, Cloud Services
Oct 2010 - Jan 2014
Vp Of Product Marketing
Jun 2010 - Sep 2010
Vp Of Mft Product Marketing
Apr 2009 - Jun 2010
Vp Of Technology
Sep 2008 - Apr 2009
Vp Of Technology
Tumbleweed Communications, Corp.
Oct 2006 - Sep 2008
Cto
Tumbleweed Communications, Corp.
Mar 2004 - Oct 2006
Director, Product Management
Tumbleweed Communications, Corp.
Jul 2003 - Mar 2004
Manager, Sales Engineering
Worldtalk
1997 - 2000
~3 yrs
Consultant
Soft-Switch
1992 - 1997
~5 yrs
Consultant
Softswitch
1992 - 1997
~5 yrs
Software Engineer
1983 - 1992
~9 yrs
1 education record
John Thielens education
-
Harvard University
FAQ
Frequently asked questions about John Thielens
Quick answers generated from the profile data available on this page.
What company does John Thielens work for?
John Thielens works for Cleo.
What is John Thielens's role at Cleo?
John Thielens is listed as CTO at Cleo at Cleo.
What is John Thielens's email address?
AeroLeads has found 1 work email signal at @cleo.com for John Thielens at Cleo.
What is John Thielens's phone number?
AeroLeads has found 10 phone signal(s) with area code 650, 815, 678, 404, 905 for John Thielens at Cleo.
Where is John Thielens based?
John Thielens is based in Alpharetta, Georgia, United States while working with Cleo.
What companies has John Thielens worked for?
John Thielens has worked for Cleo, Axway, Gxs, Inovis, and Tumbleweed Communications, Corp..
How can I contact John Thielens?
You can use AeroLeads to view verified contact signals for John Thielens at Cleo, including work email, phone, and LinkedIn data when available.
What schools did John Thielens attend?
John Thielens holds Ab, Applied Mathematics from Harvard University.
What skills is John Thielens known for?
John Thielens is listed with skills including Cloud Computing, Enterprise Software, Product Management, Saas, Software Development, Soa, Integration, and Agile Methodologies.
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