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John Marcus Email & Phone Number
Onsite Engineer
at
Greystone Technology
LinkedIn matched
✓ Verified Jun 2026
3 data sources
Profile completeness 86%
Current company
Role
Onsite Engineer
Location
Brea, California, United States
Company size
Who is John Marcus? Overview
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Quick answer
John Marcus is listed as Onsite Engineer at Greystone Technology, a company with 104 employees, based in Brea, California, United States. AeroLeads shows a matched LinkedIn profile for John Marcus.
John Marcus previously worked as Help Desk Support Specialist at The Management Trust and Teacher’s Assistant at Abco Technology. John Marcus holds Information Technology, A from Abco School Of Technology.
Company email context
Email format at Greystone Technology
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Greystone Technology
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Profile bio
About John Marcus
Hello,I am an astute technical support technician, and junior network engineer, seeking to expand my current skills and career beyond it’s current standing. I am dependable and hard-working. If given the opportunity, I will gladly prove my worth and ability, while bringing a positive attitude to any environment I am injected into.
Current workplace
John Marcus's current company
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Greystone Technology
4 roles
John Marcus work experience
A career timeline built from the work history available for this profile.
Help Desk Support Specialist
Oct 2023 - Aug 2024
Teacher’S Assistant
- Teacher’s Assistant for: Linux+, Network+, CCNA, and CEH; all while simultaneously being a full-time student at ABCO - Organized and Implemented practice and Lab Assignments- Collaborated with Instructor(s) regarding course content and created assignments in congruence with the Teacher’s desires- Graded student assignments and quizzes/tests- Helped.
Aug 2022 - Jun 2023
Level 1 It Analyst
Level one IT analyst, responsible for implementing various troubleshooting methods, thus ensuring seamless restaurant operations across over 7,500 locations worldwide.
Aug 2022 - Jan 2023
Team & coworkers
Colleagues at Greystone Technology
Other employees you can reach at greystonetech.com. View company contacts for 104 employees →
LB
Lisa Boyer
Colleague at Greystone TechnologyDenver, Colorado, United States, United States
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CW
Cory Wince
Colleague at Greystone TechnologyParker, Colorado, United States, United States
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JR
Jonathan Rutman
Colleague at Greystone TechnologyDenton, Texas, United States, United States
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TH
Taylor Hare
Colleague at Greystone TechnologyDenver, Colorado, United States, United States
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MC
Megan Cline
Colleague at Greystone TechnologyFort Collins, Colorado, United States, United States
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EP
Erik Peticolas
Colleague at Greystone TechnologyDenver, Colorado, United States, United States
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SW
Scott Washburn
Colleague at Greystone TechnologyDenver, Colorado, United States, United States
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JL
Jonathan Lee
Colleague at Greystone TechnologyMetro Manila, National Capital Region, Philippines, Philippines
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SK
Scott Kerr
Colleague at Greystone TechnologyDenver, Colorado, United States, United States
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ST
Sarah Tucker
Colleague at Greystone TechnologyDenver Metropolitan Area, United States
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Lisa Boyer
Colleague at Greystone TechnologyDenver, Colorado, United States, United States
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CW
Cory Wince
Colleague at Greystone TechnologyParker, Colorado, United States, United States
View →
JR
Jonathan Rutman
Colleague at Greystone TechnologyDenton, Texas, United States, United States
View →
TH
Taylor Hare
Colleague at Greystone TechnologyDenver, Colorado, United States, United States
View →
MC
Megan Cline
Colleague at Greystone TechnologyFort Collins, Colorado, United States, United States
View →
EP
Erik Peticolas
Colleague at Greystone TechnologyDenver, Colorado, United States, United States
View →
SW
Scott Washburn
Colleague at Greystone TechnologyDenver, Colorado, United States, United States
View →
JL
Jonathan Lee
Colleague at Greystone TechnologyMetro Manila, National Capital Region, Philippines, Philippines
View →
SK
Scott Kerr
Colleague at Greystone TechnologyDenver, Colorado, United States, United States
View →
ST
Sarah Tucker
Colleague at Greystone TechnologyDenver Metropolitan Area, United States
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3 education records
John Marcus education
Information Technology, A
Abco School Of Technology
Trade School/Certifications, Information Technology
Abco School Of Technology
Culinary Arts/Chef Training, A
Le Cordon Bleu College Of Culinary Arts-Pasadena
FAQ
Frequently asked questions about John Marcus
Quick answers generated from the profile data available on this page.
What company does John Marcus work for?
John Marcus works for Greystone Technology.
What is John Marcus's role at Greystone Technology?
John Marcus is listed as Onsite Engineer at Greystone Technology.
Where is John Marcus based?
John Marcus is based in Brea, California, United States while working with Greystone Technology.
What companies has John Marcus worked for?
John Marcus has worked for Greystone Technology, The Management Trust, Abco Technology, and Taco Bell.
Who are John Marcus's colleagues at Greystone Technology?
John Marcus's colleagues at Greystone Technology include Lisa Boyer, Cory Wince, Jonathan Rutman, Taylor Hare, and Megan Cline.
How can I contact John Marcus?
You can use AeroLeads to view verified contact signals for John Marcus at Greystone Technology, including work email, phone, and LinkedIn data when available.
What schools did John Marcus attend?
John Marcus holds Information Technology, A from Abco School Of Technology.
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