Executive Leadership

ISI has developed an industry-leading team that brings over a century of experience to your telecom challenges. More than 100 employees and international best-in-class partner alliances allow ISI Telemanagement Solutions to provide a stable, single point of contact to support your organization in optimizing and managing your telecom systems.

Mark Risch

Chief Financial Officer

Mark Risch joined ISI in 2017 as Chief Financial Officer. Mr. Risch has over 10 years of experience in Senior Management running cloud based businesses. He will oversee all financial operations of the organization as well as assist with the strategic growth plans. Mr. Risch received his Bachelor of Science degree in Accounting from Valparaiso University. He has a MBA from Roosevelt University is a Certified Public Accountant and is a Certified Global Managerial Accountant.

Mike Mestemaker

Vice President, Engineering

Mike Mestemaker joined the ISI team in March of 1998 as a Senior Software Engineer/Team Leader. Mike was promoted to Software Development Manager/System Architect in April of 2009, and again promoted in September of 2010 to Director of Engineering. In the role of Director of Engineering, Mike oversees both the Information Technology, Software Engineering, and Quality Assurance Departments, directing and prioritizing the programming of new software development as well as those efforts in the QA department. Prior to joining ISI, Mike worked as a Sr. Systems Analyst and Team Leader in the insurance industry. Mike received his Bachelor of Science degree in Computer Information Systems from DeVry Institute of Technology.

Dan Mueller

Vice President - Product Management

Dan Mueller joined ISI in 1994. He has over 15 years of telecommunications management experience. His expertise includes the implementation of voice, data and wireless network services, traffic/usage analysis and call detail reporting, and the development and management of outsourcing services for global clients. Mr. Mueller has extensive experience designing customized software applications and reporting for complex client requirements.



Darek Latawski

Vice President, Marketing & Sales

Darek Latawski joined the ISI team in January 2009 as an Account Executive in Sales. In 2010, he was promoted to Marketing Manager. In 2012, he transitioned to the role of Director of Marketing. In his current role, Mr. Latawski oversees all marketing initiatives, including: strategy and execution of programs and campaigns, inbound and outbound lead generation, social media strategy, as well as print and digital art direction. Along with this, he manages the performance of an SEO strategy, which includes solidifying and ensuring consistency in the positioning and messaging of ISI's solutions. Mr. Latawski holds a Bachelors and Masters of Science degrees in Advertising from University of Illinois at Urbana-Champaign.

Jim Jones

Vice President, Customer Support Services

Jim Jones is the Vice President of Customer Success for ISI Telemanagement Solutions. He has led customer support, onboarding and customer support teams for 20+ years. He brings extensive experience in improving customer loyalty, satisfaction, and retention to ISI. Mr. Jones holds a Bachelor of Science in Computer Science from DeVry Institute of Technology and a Master of Business Administration degree from Benedictine University.

Mitch Weiss

Director, Unified Communications Products

Mitchell Weiss joined ISI in 1994. He holds a Bachelor’s Degree Management Information Systems from the University of Illinois and a Masters in Business Administration from the Stuart School of Business in Chicago.  He is an industry leader in all phases of managing Unified Communications.  At ISI, Mr. Weiss is responsible for the vision, strategy, and implementation of a suite of Unified Communications products including Voice and Video Recording, SIP Trunk Management, and Traffic Management.  Mr. Weiss also brings his knowledge of Cloud Computing to ISI, allowing the company to create new cloud based models for its software and services.

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