ESX SPEAKER
John Kostelac
Operations Manager at Northwestern Ohio Security Systems, Inc.
John has worked for Northwestern Ohio Security Systems, Inc (NWOSS) for 23 years. He started as an engineer, worked in many different roles within the company, and is currently the Operations Manager. John graduated from The Ohio State University with a Bachelor of Science in Electrical and Computer Engineering, and three years later, he received his MBA from OSU. He is married with 2 teenage boys and lives in Dublin, Ohio. ESA
2026 ESX Speaker John Kostelac
THIS SPEAKER WILL PRESENT
The Power of Being Proactive: Engage, Educate and Upsell as a Trusted Advisor
ESX REGISTRATION
How to Attend
An ESX Executive or Deluxe Pass is required to attend all best-practice sharing sessions, like this one.
Deluxe Pass – This pass includes all ESX Programming — except for the Executive Experience. Pass holders will enjoy access to all best-practice sharing education, main stage sessions, expo activities and nightly networking events.
Executive Pass – This pass includes all of the ESX Programming of the Deluxe Pass with additional Executive Experience Sessions and working lunch.
Deluxe Pass – This pass includes all ESX Programming — except for the Executive Experience. Pass holders will enjoy access to all best-practice sharing education, main stage sessions, expo activities and nightly networking events.
Executive Pass – This pass includes all of the ESX Programming of the Deluxe Pass with additional Executive Experience Sessions and working lunch.