Principal Systems Engineer
Current
Jan 2022 - Present
AeroLeads people directory · profile
Mark Grizenko Email & Phone Number
Principal Systems Engineer
at
Expel
1 work email found
@expel.io
1 phone found area 703
LinkedIn matched
✓ Verified July 2026
4 data sources
Profile completeness 100%
Current company
Role
Principal Systems Engineer
Location
United States
Company size
Who is Mark Grizenko? Overview
A concise factual answer block for searchers comparing this professional profile.
Quick answer
Mark Grizenko is listed as Principal Systems Engineer at Expel, a with 219 employees, based in United States. AeroLeads shows a work email signal at expel.io, phone signal with area code 703, and a matched LinkedIn profile for Mark Grizenko.
Mark Grizenko previously worked as Manager, Systems Engineering at Expel and Systems Administrator at Computerware, Inc.. Mark Grizenko studied at Finger Lakes Community College.
Company email context
Email format at Expel
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{first}.{last}@expel.io
89% confidence
AeroLeads found 1 current-domain work email signal for Mark Grizenko. Compare company email patterns before reaching out.
Profile bio
About Mark Grizenko
Mark Grizenko is a Principal Systems Engineer at Expel. He possess expertise in routing, switches, network security, routers, tcp/ip and 26 more skills.
Listed skills include Routing, Switches, Network Security, Routers, and 27 others.
Current workplace
Mark Grizenko's current company
Company context helps verify the profile and gives searchers a useful next step.
Expel
4 roles
Mark Grizenko work experience
A career timeline built from the work history available for this profile.
Manager, Systems Engineering
Feb 2018 - Mar 2022
Systems Administrator
Responsible for monitoring, maintaining, and supporting managed service clients. Utilized the Labtech platform to monitor and remedy server and workstation issues. Responsible for helpdesk and onsite support when needed. Responsible for any server upgrades or migrations for our managed service clients. Responsible for handling all IT related issues for our managed clients. Configured and deployed multiple VoIP solutions.
Jul 2010 - Feb 2018
Network Engineer
The Computing Center
Responsible for maintaining and supporting my assigned clients. Provided onsite support to small-to-medium sized businesses as well as educational institutions. Worked closely with sales staff and management team to provide clients with the best service/solutions possible.
Jan 2001 - Jul 2010
Team & coworkers
Colleagues at Expel
Other employees you can reach at expel.io. View company contacts for 219 employees →
TW
Tyler Wood
Colleague at ExpelAshland, Kentucky, United States
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MW
Mikaël Welbeck
Colleague at ExpelArlington, Virginia, United States
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JS
Jeniffer Santiago
Colleague at ExpelWashington Dc-Baltimore Area, United States
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JC
John C Pyzdrowski
Colleague at ExpelWashington Dc-Baltimore Area, United States
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KC
Kevin Cain
Colleague at ExpelAlexandria, Kentucky, United States
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RP
Ray Pugh Iii
Colleague at ExpelHaymarket, Virginia, United States
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RL
Rónán Lynch
Colleague at ExpelCounty Longford, Ireland
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SK
Stefan Kemmy Olanipekun
Colleague at ExpelMinneapolis, Minnesota, United States
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TC
Tyler Collins
Colleague at ExpelWashington Dc-Baltimore Area, United States
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KB
Keerthi Behera
Colleague at ExpelHyderabad, Telangana, India
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Tyler Wood
Colleague at ExpelAshland, Kentucky, United States
View →
MW
Mikaël Welbeck
Colleague at ExpelArlington, Virginia, United States
View →
JS
Jeniffer Santiago
Colleague at ExpelWashington Dc-Baltimore Area, United States
View →
JC
John C Pyzdrowski
Colleague at ExpelWashington Dc-Baltimore Area, United States
View →
KC
Kevin Cain
Colleague at ExpelAlexandria, Kentucky, United States
View →
RP
Ray Pugh Iii
Colleague at ExpelHaymarket, Virginia, United States
View →
RL
Rónán Lynch
Colleague at ExpelCounty Longford, Ireland
View →
SK
Stefan Kemmy Olanipekun
Colleague at ExpelMinneapolis, Minnesota, United States
View →
TC
Tyler Collins
Colleague at ExpelWashington Dc-Baltimore Area, United States
View →
KB
Keerthi Behera
Colleague at ExpelHyderabad, Telangana, India
View →
1 education record
Mark Grizenko education
FAQ
Frequently asked questions about Mark Grizenko
Quick answers generated from the profile data available on this page.
What company does Mark Grizenko work for?
Mark Grizenko works for Expel.
What is Mark Grizenko's role at Expel?
Mark Grizenko is listed as Principal Systems Engineer at Expel.
What is Mark Grizenko's email address?
AeroLeads has found 1 work email signal at @expel.io for Mark Grizenko at Expel.
What is Mark Grizenko's phone number?
AeroLeads has found 1 phone signal(s) with area code 703 for Mark Grizenko at Expel.
Where is Mark Grizenko based?
Mark Grizenko is based in United States while working with Expel.
What companies has Mark Grizenko worked for?
Mark Grizenko has worked for Expel, Computerware, Inc., and The Computing Center.
Who are Mark Grizenko's colleagues at Expel?
Mark Grizenko's colleagues at Expel include Tyler Wood, Mikaël Welbeck, Jeniffer Santiago, John C Pyzdrowski, and Kevin Cain.
How can I contact Mark Grizenko?
You can use AeroLeads to view verified contact signals for Mark Grizenko at Expel, including work email, phone, and LinkedIn data when available.
What schools did Mark Grizenko attend?
Mark Grizenko studied at Finger Lakes Community College.
What skills is Mark Grizenko known for?
Mark Grizenko is listed with skills including Routing, Switches, Network Security, Routers, Tcp/Ip, Firewalls, Disaster Recovery, and Network Administration.
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