Information Technology System Architect
Current
Apr 2022 - Present
AeroLeads people directory · profile
Mark Keefer Email & Phone Number
Information Technology System Architect
at
Penn National Insurance
1 work email found
@pennnationalinsurance.com
7 phones found area 717 and 856
LinkedIn matched
✓ Verified Jun 2026
4 data sources
Profile completeness 100%
Current company
Role
Information Technology System Architect
Location
Hershey, Pennsylvania, United States
Company size
Who is Mark Keefer? Overview
A concise factual answer block for searchers comparing this professional profile.
Quick answer
Mark Keefer is listed as Information Technology System Architect at Penn National Insurance, a company with 606 employees, based in Hershey, Pennsylvania, United States. AeroLeads shows a work email signal at pennnationalinsurance.com, phone signal with area code 717, 856, and a matched LinkedIn profile for Mark Keefer.
Mark Keefer previously worked as Senior Infrastructure System Administrator at Penn National Insurance and Senior Technologist at Gdc (Global Data Consultants). Mark Keefer holds Associate'S Degree, Electrical And Electronics Engineering from Electronics Institute, Middletown.
Company email context
Email format at Penn National Insurance
This section adds company-level context without repeating Mark Keefer's masked contact details.
{first}.{last}@pennnationalinsurance.com
89% confidence
AeroLeads found 1 current-domain work email signal for Mark Keefer. Compare company email patterns before reaching out.
Profile bio
About Mark Keefer
Experienced Technology Lead with a demonstrated history of working in the utilities industry. Skilled in Network Administration, Windows 7, Computer Repair, Technical Support, and VMware View and Citrix XenApp. Strong professional with a Associate's degree focused in Electrical and Electronics Engineering from Electronics Institute, Middletown.
Listed skills include Windows Server, Microsoft Exchange, Comptia A+ Certification, Help Desk Support, and 22 others.
Current workplace
Mark Keefer's current company
Company context helps verify the profile and gives searchers a useful next step.
Penn National Insurance
7 roles
Mark Keefer work experience
A career timeline built from the work history available for this profile.
Senior Infrastructure System Administrator
Aug 2018 - Apr 2022
Senior Technologist
Apr 2018 - Aug 2018
Lead Technology Products
Jun 2014 - Mar 2018
Senior Systems Administrator
Aug 2003 - Jun 2014
Pc Service Technician
Mar 1999 - Aug 2003
Customer Engineer
Sep 1994 - Mar 1999
Team & coworkers
Colleagues at Penn National Insurance
Other employees you can reach at pennnationalinsurance.com. View company contacts for 606 employees →
KI
Kandy Isenberg
Colleague at Penn National InsuranceGreater Harrisburg Area, United States
View →
KC
Kristen Clark
Colleague at Penn National InsuranceGreater Harrisburg Area, United States
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RF
Robert Flath
Colleague at Penn National InsuranceCedarburg, Wisconsin, United States, United States
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CA
Cheryl Alvarez
Colleague at Penn National InsuranceRichmond, Virginia, United States, United States
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JM
John Mangold
Colleague at Penn National InsuranceMechanicsburg, Pennsylvania, United States, United States
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GF
Graig Filer
Colleague at Penn National InsuranceMercer, Pennsylvania, United States, United States
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GW
Gary Wagner
Colleague at Penn National InsuranceHarrisburg, Pennsylvania, United States, United States
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MK
Mark Keim
Colleague at Penn National InsuranceYork, Pennsylvania, United States, United States
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BP
Brent Potts
Colleague at Penn National InsuranceMurfreesboro, Tennessee, United States, United States
View →
DK
Denise Koval
Colleague at Penn National InsuranceTrenton, New Jersey, United States, United States
View →
Kandy Isenberg
Colleague at Penn National InsuranceGreater Harrisburg Area, United States
View →
KC
Kristen Clark
Colleague at Penn National InsuranceGreater Harrisburg Area, United States
View →
RF
Robert Flath
Colleague at Penn National InsuranceCedarburg, Wisconsin, United States, United States
View →
CA
Cheryl Alvarez
Colleague at Penn National InsuranceRichmond, Virginia, United States, United States
View →
JM
John Mangold
Colleague at Penn National InsuranceMechanicsburg, Pennsylvania, United States, United States
View →
GF
Graig Filer
Colleague at Penn National InsuranceMercer, Pennsylvania, United States, United States
View →
GW
Gary Wagner
Colleague at Penn National InsuranceHarrisburg, Pennsylvania, United States, United States
View →
MK
Mark Keim
Colleague at Penn National InsuranceYork, Pennsylvania, United States, United States
View →
BP
Brent Potts
Colleague at Penn National InsuranceMurfreesboro, Tennessee, United States, United States
View →
DK
Denise Koval
Colleague at Penn National InsuranceTrenton, New Jersey, United States, United States
View →
1 education record
Mark Keefer education
-
Electronics Institute, Middletown
FAQ
Frequently asked questions about Mark Keefer
Quick answers generated from the profile data available on this page.
What company does Mark Keefer work for?
Mark Keefer works for Penn National Insurance.
What is Mark Keefer's role at Penn National Insurance?
Mark Keefer is listed as Information Technology System Architect at Penn National Insurance.
What is Mark Keefer's email address?
AeroLeads has found 1 work email signal at @pennnationalinsurance.com for Mark Keefer at Penn National Insurance.
What is Mark Keefer's phone number?
AeroLeads has found 7 phone signal(s) with area code 717, 856 for Mark Keefer at Penn National Insurance.
Where is Mark Keefer based?
Mark Keefer is based in Hershey, Pennsylvania, United States while working with Penn National Insurance.
What companies has Mark Keefer worked for?
Mark Keefer has worked for Penn National Insurance, Gdc (Global Data Consultants), American Water, Dst Health Solutions, and Iss Solutions.
Who are Mark Keefer's colleagues at Penn National Insurance?
Mark Keefer's colleagues at Penn National Insurance include Kandy Isenberg, Kristen Clark, Robert Flath, Cheryl Alvarez, and John Mangold.
How can I contact Mark Keefer?
You can use AeroLeads to view verified contact signals for Mark Keefer at Penn National Insurance, including work email, phone, and LinkedIn data when available.
What schools did Mark Keefer attend?
Mark Keefer holds Associate'S Degree, Electrical And Electronics Engineering from Electronics Institute, Middletown.
What skills is Mark Keefer known for?
Mark Keefer is listed with skills including Windows Server, Microsoft Exchange, Comptia A+ Certification, Help Desk Support, Servers, Active Directory, Certified Novell Administrator, and Comptia Network+ Certified.
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