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John Callahan Email & Phone Number
Onsite Services Installer
at
Shift4
1 work email found
@pinnaclehs.com
LinkedIn matched
✓ Verified May 2026
4 data sources
Profile completeness 86%
Current company
Role
Onsite Services Installer
Location
Pensacola Metropolitan Area, United States, United States
Who is John Callahan? Overview
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Quick answer
John Callahan is listed as Onsite Services Installer at Shift4, based in Pensacola Metropolitan Area, United States, United States. AeroLeads shows a work email signal at pinnaclehs.com and a matched LinkedIn profile for John Callahan.
John Callahan previously worked as Computer Technician at Freelance and Customer Service Specialist at Pinnacle Hospitality. John Callahan holds History from Wright State University.
Company email context
Email format at Shift4
This section adds company-level context without repeating John Callahan's masked contact details.
{first_initial}{last}@pinnaclehs.com
86% confidence
AeroLeads found 1 current-domain work email signal for John Callahan. Compare company email patterns before reaching out.
Profile bio
About John Callahan
John Callahan is a Onsite Services Installer at Shift4.
Current workplace
John Callahan's current company
Company context helps verify the profile and gives searchers a useful next step.
7 roles
John Callahan work experience
A career timeline built from the work history available for this profile.
Onsite Services Installer
Current
Jan 2023 - Present
Computer Technician
Current
Freelance
May 2008 - Present
Customer Service Specialist
Pinnacle Hospitality
Oct 2020 - Sep 2023
Server Trainer
Jun 2015 - Oct 2020
Server
Jun 2012 - Jun 2015
Retail Specialist
May 2008 - May 2012
2 education records
John Callahan education
History
Education record
FAQ
Frequently asked questions about John Callahan
Quick answers generated from the profile data available on this page.
What company does John Callahan work for?
John Callahan works for Shift4.
What is John Callahan's role at Shift4?
John Callahan is listed as Onsite Services Installer at Shift4.
What is John Callahan's email address?
AeroLeads has found 1 work email signal at @pinnaclehs.com for John Callahan at Shift4.
Where is John Callahan based?
John Callahan is based in Pensacola Metropolitan Area, United States, United States while working with Shift4.
What companies has John Callahan worked for?
John Callahan has worked for Shift4, Freelance, Pinnacle Hospitality, Cheddar'S Scratch Kitchen, and Applebee'S.
How can I contact John Callahan?
You can use AeroLeads to view verified contact signals for John Callahan at Shift4, including work email, phone, and LinkedIn data when available.
What schools did John Callahan attend?
John Callahan holds History from Wright State University.
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