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The SiGenix team has a diverse expertise in a variety of technical disciplines.  All of them can cross over disciplines allowing for effective communications.  The expertise includes the following skills:

Embedded Design, UI Development, Connectivity, Windows Apps, Mobile Medical Apps, and Data Management.


Even though some names have changed throughout our 18 years of existence, the drive to engineer hardware and software solutions is not only our job, but our passion.

Greg Yurko
Principal Engineer and Managing Partner

Greg graduated from the University of Pittsburgh in 1983 with a B.S. in Electrical Engineering.  He worked for Westinghouse on radar systems and nuclear power instrumentation hardware and software design for 3 years.  Following that, Greg worked for Union Switch and Signal for 9 years developing software for transportation safety systems, specifically cab signaling.  He then worked for Respironics for 10 years where he developed embedded software for respiratory therapy systems and eventually became the Director of Engineering for Software Applications and Sleep Diagnostic systems. Greg became a partner in SiGenix in 2005.  Greg holds 10 US Patents in medical device areas.

Jerry Joseph
Senior Engineer

Jerry graduated from Penn State with a B.S. in Electrical Engineering in 1981 and from Lehigh University with an M.S. in Electrical Engineering in 1988.  Jerry began his career at Bell Telephone Laboratories focusing on telecommunication system circuit design.  With the breakup of the Bell System, Jerry continued working for spin-offs Lucent Technologies and Agere Systems now involved with semiconductor device design as a device designer, device architect, and applications engineer.  Jerry’s experience includes analog and digital circuit design with emphasis on data packet switching, data flow control, linear and switching power supplies.

Evan Yurko

Evan graduated from the University of Pittsburgh in 2021 with a B.S. in Electrical Engineering.  He interned with Philips Respironics working in sleep therapy assisting in CPAP hardware.  After that, Evan worked with Bechtel Corporation developing a power monitoring system.  Evan has an extensive software background, but primarily focuses on hardware design and printed circuit board layout at SiGenix.

Jim Ashbaugh
Office Manger
Dave Smail
Principal Engineer and Partner

Dave graduated from the University of Pittsburgh in 1986 with a B.S in Electrical Engineering.  He moved to Baltimore after graduation and took a job with Westinghouse Defense Systems where he designed digital processing hardware for advanced radar systems.  Dave's next career stop was in 1995 with what is now Alstom (formerly Bombardier Transportation) in West Mifflin, PA.  He primarily wrote train control and propulsion software for 11 years for Bombardier until he became a partner with SiGenix in the spring of 2006.

Tom Schneider
Principal Engineer and Partner

Tom graduated from the University of Pittsburgh in 1996 with a B.S. in Electrical Engineering.  Following graduation, Tom began his career at Adtranz (now Bombardier Transportation) in West Mifflin, where he focused on analog and digital hardware design for propulsion control.  In 2004, he accepted a position as hardware design engineer at Tollgrade Communications in Cheswick, PA, where he strengthened his skills in digital hardware design and FPGA/CPLD design using VHDL.  Tom joined SiGenix in 2007 as a principal hardware design engineer, becoming a partner in 2009.

Rich Riggio
Founder, Strategic  Business Manager & Chief Financial Officer

After several years away from SiGenix, our founder and former CEO is back and a very welcomed addition to our team.  Rich was brought out of retirement to support new and existing business opportunities in a very busy engineering services marketplace.  Rich holds an M.S.E.E from Rensselaer Polytechnic Institute.  After college, Rich worked for General Dynamics, Bombardier Transportation, and Respironics, where he developed power supplies and control boards for the defense, transit, and medical industries.  Rich left industry in 2004 and founded SiGenix, Inc.  The firm was honored by the Pittsburgh Technology Council with the Rising Star Award in 2007.  As CEO, Rich grew revenues every year ($200,000 to $2.1 million) as well as the firm’s client base (3 to 25).  At the time of his departure from full-time duties, the firm grew from just himself to six engineers and 2 support staff.

Jim graduated from Duquesne University in 1986 with B.A in Political Science and a minor in Social Communication.  He received a Certificate in Human Resource Management at the Master's Level in 2005 from La Roche College.  Jim worked as a Paralegal for 10 years with several law firms before starting at SiGenix in the spring of 2006.

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