Meet Jack & Mark

Jack Eisenbach is a licensed Professional Engineer, certified to practice in the states of New York, New Jersey, Massachusetts, and Pennsylvania.

Jack Eisenbach, a member of the National Society of Professional Engineers (NSPE), is a Professional Engineer with more than twenty years of experience.

Prior to founding Eisenbach & Ruhnke Engineering, P.C., Mr. Eisenbach held positions as a Senior Engineer, a Transportation Planner, and a construction project supervisor.

Mr. Eisenbach is also a member of the Association of Energy Engineers (AEE) and holds the following AEE Certifications: Energy Manager (CEM), Energy Auditor (CEA), Measurement and Verification (CMVP) and Building Commissioning (BCP).

M.E. Transportation – Rensselaer Polytechnic Institute Troy, New York

B.S. Civil Engineering – Rensselaer Polytechnic Institute Troy, New York

Lead Inspector Training – University of Massachusetts School of Public Health

Mark P. Ruhnke, P.E., Vice President

Mark Ruhnke is a licensed Professional Engineer in New York and has more than fifteen years of experience in environmental and energy engineering.

Mr. Ruhnke became a partner with Eisenbach in 2004 and prior to that had worked with Eisenbach since 1995.

Mr. Ruhnke is also a member of the Association of Energy Engineers (AEE)and is certified by the AEE as an Certified Energy Auditor(CEA). B.S.

Environmental and Resource Engineering from the State University of New York College of Environmental Science and Forestry at Syracuse University.

Attended Mohawk Valley Community College for Engineering Science