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Meet the Koenig Team

 Our staff is dedicated to the business of ironwork and highly qualified in their respective disciplines. Koenig Iron Works encourages its staff to keep pace with industry changes, encouraging  and enhancing their craft through in-house training and continuing education programs.

Barry Leistner

President & CEO

Mr. Leistner has worked at Koenig Iron Works, Inc. since 1972, and has held the position of President since August 1979. He is a graduate of C.W. Post College where he earned a B.S. degree in science. Mr. Leistner has over 40 years of experience in all phases of construction, including an extensive background in the estimation, design, fabrication, and erection of structural and miscellaneous steel.

Mr. Leistner is an owner and managing member of several real estate development companies, and also serves on the Board of Directors of Nathan’s Famous Inc., a publicly held food service, real estate, and franchising company.

Alan Guthertz


Mr. Guthertz has been employed as Chief Financial Officer for Koenig Iron Works, Inc. since September 1991. He graduated from the State University of New York at Binghamton in 1977 with a B.S. degree in science, and is a New York State Certified Public Accountant and member of the New York State Society of CPA’s since 1979. Mr. Guthertz has over 35 years of financial and accounting experience. He has an extensive background in construction accounting procedures and policies, tax preparation and compliance, job costing, personnel management, union contracts, banking, computer operations, insurance, and risk management.

Nick Morisset

Chief Operating Officer

Mr. Morisset has been in charge of Operations for Koenig Iron Works, Inc. since December 2009, and has been working for the company as a project manager since 2005. He graduated from the University of Quebec in 1998 where he earned a B.S. degree in engineering. Mr. Morisset has over 25 years of experience in building construction including estimating, design, fabrication, and erection of structural and miscellaneous metals.

Mr. Morisset previously worked as a project manager for steel companies in the New York metropolitan area where he managed highly-regarded projects across the North East. He also worked as a field engineer, estimator, and a sales coordinator earlier in his career.

Rajiv Paralkar

Chief Estimator

Mr. Paralkar has been employed by Koenig Iron Works, Inc. since 1986 and has held the position of Chief Estimator since 2003. He is a graduate of the University of Bombay, Mumbai, India with a B.S. in civil engineering, and an M.S. in engineering from New Jersey Institute of Technology, NJ. Mr. Paralkar has over 32 years of experience in estimating and budgeting projects of all sizes and is well versed in preparing project budgets from concept to completion. He has a proven track record in developing and maintaining long-term relationships with clients and general contractors throughout the New York metropolitan area. Prior to Koenig, Mr. Paralkar worked as an engineer at City and Industrial Development Corporation, located in New Bombay, India, where he was involved in the budget and construction process for the company’s Satellite City project of New Mumbai from 1981 to 1985.

Interested in becoming part of the Koenig Team?

If you’d like to know more about becoming a part of our team, we would love to hear from you!