What departments does Great Lakes Systems Inc have?

Great Lakes Systems Inc has employees across 2 departments including Program & Project Management, Support.

What is the largest department at Great Lakes Systems Inc?

The largest department at Great Lakes Systems Inc is Program & Project Management with 2 employees.

Where are Great Lakes Systems Inc employees located globally?

Great Lakes Systems Inc has employees across 1 continents and 2 countries including United States Of America, Canada.

How has Great Lakes Systems Inc's team size changed over time?

Great Lakes Systems Inc's team has decreased from approximately 10 to 8 employees based on available data.

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Great Lakes Systems Inc Employee Directory

ConstructionMichigan, United States11-50 Employees

Great Lakes Systems Inc operates in the construction sector, specializing in single-ply roofing for commercial, industrial, and institutional buildings. Based in Jenison, Michigan, the company serves building owners, architects, general contractors, and facilities managers, delivering roofing solutions aimed at keeping structures dry and protected. With a track record of applying over sixty-million square feet of single-ply roofing, it demonstrates capability across a range of project sizes—from small scopes to large industrial facilities. The firm is an approved applicator for multiple roofing material manufacturers, reflecting an established position within the single-pply roof market. In June 2024, the company announced a partnership with Weather Shield Roofing Systems, signaling collaboration on roofing maintenance and reroofing within West Michigan.

Great Lakes Systems Inc Global Highlights

North America
29

United States Of America
28
Canada
1

Great Lakes Systems Inc's Leadership

D. E.
Director Of Computer Technology
Mobile Phone
Email
M. T.
Senior Project Manager
Mobile Phone
Email
M. K.
Project Manager
Mobile Phone
Email
T. G.
Service Manager
Mobile Phone
Email
J. G.
Fire Alarm/ Fire Extinguisher Technician/ Parts Delivery
Mobile Phone
Email

Great Lakes Systems Inc Employee Metrics

100%

50%

2026

2025

Business
Program & Project Management
Human Resources
Other

Contact profiles from Great Lakes Systems Inc

Name

Title

Contact

Location

Last Update

D. E.
Director Of Computer Technology
Mobile Phone
Email
Oct 23, 2024
M. T.
Senior Project Manager
Mobile Phone
Email
Oct 23, 2024
M. K.
Project Manager
Mobile Phone
Email
Oct 23, 2024
T. G.
Service Manager
Mobile Phone
Email
Jan 26, 2026
J. G.
Fire Alarm/ Fire Extinguisher Technician/ Parts Delivery
Mobile Phone
Email
Nov 12, 2025

Frequently Asked Questions

What is Great Lakes Systems Inc known for?

Great Lakes Systems Inc was founded in 1969 and operates in the Construction industry. You can contact Great Lakes Systems Inc's main corporate office by phone at

+1-616-669-****

. Explore Great Lakes Systems Inc's company overview page for more information.

What is Great Lakes Systems Inc's most common email format?

Great Lakes Systems Inc employees' email format typically follows the pattern of First-Last@glsroof.com. Trying to find reliable and up-to-date employee contact data? Find more Great Lakes Systems Inc email formats with LeadIQ.

How many employees does Great Lakes Systems Inc have currently?

Great Lakes Systems Inc has approximately 26 employees as of September 2026. These team members are located across 1 continents, including North America.

Who are Great Lakes Systems Inc's key employees and leadership?

As of September 2026, Great Lakes Systems Inc's key employees include:

Director Of Computer Technology: D. E.
Senior Project Manager: M. T.
Project Manager: M. K.
Service Manager: T. G.
Fire Alarm/ Fire Extinguisher Technician/ Parts Delivery: J. G.

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Great Lakes Systems Inc Employee Directory

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