The Team

Mark Greene

Co-Founder & Managing Partner

Mark Greene is an industry veteran with over 30 years of IT and Cyber Security experience. Mark is a retired Police Officer specializing in Cyber Crimes and Forensics. As one of Stryker’s co-founders in 2013, Mark saw a need to provide highly-relational and client-focused IT service with a focus on Cyber Security and Compliance for physician practices, associations, and small/mid-size businesses. Mark’s goal was to create a Premier Trusted IT Partner experience for their clients. With a background in Criminal Justice from University of Illinois, Mark’s heart to serve and protect is a driving force behind the quality service of Stryker Networks. From strategic partnering to navigating the confusing waters that is IT and Compliance, Mark enjoys helping clients increase productivity and securing their Data by providing the highest level of IT, Security, and Compliance support, all while possibly saving them a little money along the way.

Thomas Donohue


Tom Donohue enjoys a good challenge of solving puzzles. That’s why, in 2013, he co-founded Stryker Networks with Mark Greene, matching the pieces of a managed IT service along with software development to satisfy the needs of the growing SMB market. With a BS in Electrical Engineering from Notre Dame, Tom’s ability to solve complex issues is a unique distinction that sets Stryker apart from their competitors. Combine Tom’s extensive experience in management, capital equipment leasing, distribution, marketing and sales with 30 years experience in custom software development and you’ll see why Stryker is able to address any challenge a client may face. Tom takes pride in knowing Stryker delivers quality solutions for their customers.

Tony Falco

Accounting Manager

Tony Falco loves working in a fast-paced environment, which is why he’s a great fit for this rapidly growing company. With a business degree from Wright College, Tony worked as an operations manager for a material handling company serving the steel industry for 22 years before working for Stryker on a part-time basis in October 2013. He enjoyed the diversity of work he did for Stryker so, in 2016, he joined the team full time. Tony is a team player who values working with others toward a common goal. At Stryker, he lives out the business philosophy and practices set by co-founders Tom Donohue and Mark Greene by providing clients with the most up-to-the-minute solutions tailor fit for their individual company needs.

Eric Loes

Services Manager

Eric Loes is the newest Management Team member having joined Stryker Networks in July 2016. It wasn’t the work itself that drew Eric to Stryker, it was the 19-year relationship he had with co-founder Mark Greene. Through working with and being mentored by Mark, Eric now leads and manages the rest of the Stryker team through the day-to-day challenges of a managed IT service provider. Having lived in the Chicagoland area most of his life, Eric values stability, which is exactly what he brings to the team. That, combined with a Bachelor’s in Marketing from North Central College, Eric understands the value of treating others as he would like to be treated, a critical component in building and maintaining relationships with Stryker clients.