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John O'Brien Email & Phone Number
Federal Firearms Licensee
at
ATF
1 work email found
@cisco.com
LinkedIn matched
✓ Verified July 2026
3 data sources
Profile completeness 86%
Current company
Role
Federal Firearms Licensee
Location
Plano, Texas, United States
Company size
Who is John O'Brien? Overview
A concise factual answer block for searchers comparing this professional profile.
Quick answer
John O'Brien is listed as Federal Firearms Licensee at ATF, a with 2165 employees, based in Plano, Texas, United States. AeroLeads shows a work email signal at cisco.com and a matched LinkedIn profile for John O'Brien.
John O'Brien previously worked as President at Jlo Capital Ventures, Llc.
Company email context
Email format at ATF
This section adds company-level context without repeating John O'Brien's masked contact details.
*@cisco.com
68% confidence
AeroLeads found 1 current-domain work email signal for John O'Brien. Compare company email patterns before reaching out.
Profile bio
About John O'Brien
John O'Brien is a Federal Firearms Licensee at ATF. He possess expertise in unified communications, cloud computing, managed services, telephony, cisco technologies and 36 more skills.
Listed skills include Unified Communications, Cloud Computing, Managed Services, Telephony, and 37 others.
Current workplace
John O'Brien's current company
Company context helps verify the profile and gives searchers a useful next step.
3 roles · 20 years
John O'Brien work experience
A career timeline built from the work history available for this profile.
President
Current
Jlo Capital Ventures, Llc
2007 - Present
~19 yrs 6 mos
Federal Firearms Licensee
Current
Oct 2019 - Present
Team & coworkers
Colleagues at ATF
Other employees you can reach at atf.gov. View company contacts for 2165 employees →
TD
Traves Darmock
Colleague at AtfCoatesville, Pennsylvania, United States
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SH
Sheila Hassenpflug
Colleague at AtfCincinnati, Ohio, United States
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RC
Ronald Chubbsjr
Colleague at AtfLaurel, Maryland, United States
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RS
Robbi S.
Colleague at AtfFalling Waters, West Virginia, United States
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GL
Gregory Lizzi
Colleague at AtfOdenton, Maryland, United States
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WH
William Haas
Colleague at AtfCharleston, South Carolina, United States
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AF
Adam Friedman
Colleague at AtfSilver Spring, Maryland, United States
View →
TA
Tyson Andersen
Colleague at AtfBrunswick, Georgia, United States
View →
EC
Elaine Childs
Colleague at AtfStockbridge, Georgia, United States
View →
SA
Sehrish Alam
Colleague at AtfWashington, District Of Columbia, United States
View →
Traves Darmock
Colleague at AtfCoatesville, Pennsylvania, United States
View →
SH
Sheila Hassenpflug
Colleague at AtfCincinnati, Ohio, United States
View →
RC
Ronald Chubbsjr
Colleague at AtfLaurel, Maryland, United States
View →
RS
Robbi S.
Colleague at AtfFalling Waters, West Virginia, United States
View →
GL
Gregory Lizzi
Colleague at AtfOdenton, Maryland, United States
View →
WH
William Haas
Colleague at AtfCharleston, South Carolina, United States
View →
AF
Adam Friedman
Colleague at AtfSilver Spring, Maryland, United States
View →
TA
Tyson Andersen
Colleague at AtfBrunswick, Georgia, United States
View →
EC
Elaine Childs
Colleague at AtfStockbridge, Georgia, United States
View →
SA
Sehrish Alam
Colleague at AtfWashington, District Of Columbia, United States
View →
FAQ
Frequently asked questions about John O'Brien
Quick answers generated from the profile data available on this page.
What company does John O'Brien work for?
John O'Brien works for ATF.
What is John O'Brien's role at ATF?
John O'Brien is listed as Federal Firearms Licensee at ATF.
What is John O'Brien's email address?
AeroLeads has found 1 work email signal at @cisco.com for John O'Brien at ATF.
Where is John O'Brien based?
John O'Brien is based in Plano, Texas, United States while working with ATF.
What companies has John O'Brien worked for?
John O'Brien has worked for Atf and Jlo Capital Ventures, Llc.
Who are John O'Brien's colleagues at ATF?
John O'Brien's colleagues at ATF include Traves Darmock, Sheila Hassenpflug, Ronald Chubbsjr, Robbi S., and Gregory Lizzi.
How can I contact John O'Brien?
You can use AeroLeads to view verified contact signals for John O'Brien at ATF, including work email, phone, and LinkedIn data when available.
What skills is John O'Brien known for?
John O'Brien is listed with skills including Unified Communications, Cloud Computing, Managed Services, Telephony, Cisco Technologies, Telepresence, Voip, and Enterprise Software.
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