Mark Sideris
Direct Sales Supervisor at Optimum | Bethpage, New York, United States
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Direct Sales Supervisor at Optimum in May 2009 to Present
Residential Direct sales at Optimum in June 2001 to April 2009
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Adelphi University
Dale Carnegie Training, October 2026
Six Sigma Management Institute by Dr. Mikel J. Harry
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Cross-functional Team Leadership
Strategic Business Development
Account Management
Sales and Operation Management
Salesforce.com Implementation
Microsoft Office
Presentation Skills
Sales Campaigns
Project Management
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Discover more about OptimumWhat is Mark Sideris email address?
Email Mark Sideris at [email protected]. This email is the most updated Mark Sideris's email found in 2026.
What is Mark Sideris phone number?
Mark Sideris phone number is 6316294865.
How to contact Mark Sideris?
To contact Mark Sideris send an email to [email protected]. If you want to call Mark Sideris try calling on 6316294865. (updated on February 22, 2026)
What company does Mark Sideris work for?
Mark Sideris works for Optimum
What is Mark Sideris's role at Optimum?
Mark Sideris is Direct Sales Supervisor
What industry does Mark Sideris work in?
Mark Sideris works in the Telecommunications industry.
Mark Sideris Email Addresses
Mark Sideris Phone Numbers
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