Joseph Vanderbosch
Chief Technology Officer
Joseph Vanderbosch is the current CTO and founder of On Call Technology Group. He is responsible for the long-term vision to promote growth and success in the company as well as procuring and implementing the latest technologies to stay on the cutting edge.
Larry Vanderbosch
Operations Manager
Larry has been a Western New York resident his entire life. He has over 40 years of operational management experience and uses his experience and skills to keep the company operating efficiently and within budget.
Zachary Munger
Technical Services Manager
Zach has lived in WNY his whole life, and has worked in the IT world for over 15 years. He has been with the On Call team since 2016.
Thomas Golderesi
Technician
Thomas is a skilled IT installer with over 10 years of experience in delivering high-quality technology solutions. With a strong background in setting up and troubleshooting hardware and software systems, Thomas has built a reputation for efficiency, reliability, and problem-solving.
Outside of work, Thomas is passionate about solving Rubik’s cubes, a hobby that reflects a love for puzzles and challenges. This problem-solving mindset carries over into the professional realm, where attention to detail and perseverance are key to ensuring successful installations and system optimizations.
Greg Hammerl
Senior Sales Engineer
Greg has bachelor degree in business administration from the State University at Buffalo. He holds technical certificates with Microsoft , Cisco, and training certificate with Dale Carnage. He has worked in the IT field since 1988 supporting small business networks. Mr. Hammerl has a passion for leading edge technology and is educated in training and supporting business owners with cutting edge protections for their data and devices.
