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Courses by Provider > About Us > Course Provider Biographies

Course Provider Biographies prides itself on partnering with PDH and CEU subject matter experts based on their educational background and field of expertise. Our Course Providers are selected based on one of the following criteria:

  • Must be Licensed Professional Engineers; or
  • Must hold a Doctorate Degree in Engineering from an accredited university.

The credentials of Course Providers are complemented by the extensive years of experience directly related to the subject matter they offer; consequently, distinguishing them as highly qualified subject matter experts.

Feel free to browse our elite team of Course Providers below. If you have any question related to a specific Course Provider, please contact us at


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Edward Gellender, P.E.

Mr. Edward Gellender is an online PDH course provider of continuing education courses for professional engineers.
Mr. Gellender has 40 years of diversified engineering and consulting experience within the Electrical and Electronics Industries, specializing in design and application of a wide assortment of electronic devices that have in common their utilization of the electromagnetic spectrum for military, civil and industrial environments.
Some of the devices designed and applied include a tremendous assortment of all kinds of radios, radars, navigation aids, and even weather balloon systems. Other devices include industrial lasers and a variety of remote monitors of thermal and magnetic fields. Additional systems Mr. Gellender has designed include SCADA systems for power utility monitoring. As part of the design process, he was involved in specifications development, systems and budget analyses, configuration, and a wide array of testing environments.
Mr. Gellender is a Registered Professional Engineer in the State of New York.  He holds a Bachelor of Engineering (Electrical) from the City College of the City University of New York, with studies towards a Masters at The Polytechnic Institute of Brooklyn.  Additional specialize studies ConEdison courses in their Power Distribution Network.
Courses provided to by Mr. Gellender are as follows:

Elie Tawil, P.E., LEED AP

Mr. Elie Tawil is an online PDH course provider of continuing education courses for professional engineers.
Mr. Tawil is a licensed professional engineer in the state of New Jersey and a LEED Accredited Professional. He holds a Bachelor of Science in Mechanical Engineering and a Master of Science in Engineering Management from New Jersey Institute of Technology. He has diversified engineering experience within the mechanical and environmental engineering industry. He has provided a wide range of engineering services in support of large scale projects.
Mr. Tawil has developed several continuing education courses for professional engineers pursuing PDH credit for their license renewal.
Mr. Tawil was actively involved throughout the different stages of projects starting from conceptual design to bidding the construction documents for HVAC, Plumbing, and Fire Protection for several residential, commercial, and industrial building projects. He has developed detailed engineering drawings, reports, and calculations. He has also conducted mechanical equipment quantification as well as prepared cost estimates for major construction projects.

As a mechanical engineer, Mr. Tawil has also ventured into the Oil & Gas Industry, where he has prepared scope of work, developed engineering drawings, reports, calculations, raised material requisitions, reviewed Vendor technical offers/submittals and issued technical clarifications as well as technical bid evaluation reports pertaining to different mechanical equipment installed on offshore platforms.
Mr. Tawil's environmental experience included site investigations and evaluation of building material and the associated MEP systems as they relate to the presence of asbestos-containing material and/or lead-based paint material. His expertise included the development of remediation design drawings, engineering investigation reports and detailed cost estimates.
Courses provided to by Mr. Tawil are as follows:

Ely Greenberg, P.E., CEM

Mr. Ely Greenberg is an online PDH course provider of continuing education courses for professional engineers.
Mr. Greenberg is a chemical engineer focusing on water and wastewater treatment. He has experience on a wide variety of water, wastewater, and energy related infrastructure projects. He is the founder of ERG Process Energy (, a company that provides energy consulting services to water and wastewater treatment utilities as well as food and beverage companies.
Mr. Greenberg is an active member of Engineer's Without Borders, the NYWEA Energy Committee, and the WEF Stockholm Junior Water Prize Committee. He holds a Master of Science and a Bachelor of Science in chemical engineering, and is a New York State licensed professional engineer and a Certified Energy Manager.
Courses provided to by Mr. Greenberg are as follows: