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To our valued Partners

The Protos Vendor Handbook was designed to support and empower you. The vital partnership information, suggestions, instructions, tips and contact details within will allow you to provide exceptional security services on your Protos assignments.

Whether you are a new or existing vendor, please review the contents of this guide and refer to it frequently.

This page will always contain the latest version of the Protos Vendor Handbook for your ease of use.

Please feel free to reach out with any feedback, questions or concerns to your Vendor Relationship Manager or Glen Sider, Vice President of Vendor Management, as appropriate.

 

 

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Contact Us
By Department
Protos
Headquarters

383 Main Ave, Suite 505
Norwalk, CT 06851, USA
Phone: 203.941.4700

Contact Us
By Department
Protos
Headquarters

383 Main Ave, Suite 505
Norwalk, CT 06851, USA
Phone: 203.941.4700

Mark Hjelle

Chief Executive Officer

Mark Hjelle is the CEO of Security Services Holdings, LLC as well as Protos Security and its subsidiaries. Mark is an experienced Chief Executive Officer and Board Member who has led large national business and facilities services firms for nearly 25 years delivering strong top- and bottom-line growth while building high-performing teams with strong culture. Most recently, he was CEO for CSC ServiceWorks, a B2B2C provider of technology-enabled consumer services. Prior to CSC, Mark was President of Brickman/Valleycrest a national provider of exterior landscape and snow removal services. Over the course of his 18-year tenure at Brickman, he held numerous leadership positions in operations, finance and business development. Mark holds a Bachelor of Science degree in Economics from The Wharton School of Business, University of Pennsylvania, a Master of Government Administration from the University of Pennsylvania Fels Institute of Government and a Law Degree from Case Western Reserve School of Law.