Dr. Al Gonzalez, PE is the CEO and President of DOTec Engineering, located in St. Charles, Missouri.

He began his engineering career in early 1978. He earned his Doctorate in Engineering Education from Missouri S&T in 2007, a Master of Science in Mechanical Engineering (MSME) from Washington University in 1984, and a Bachelor of Science in Civil Engineering (BSCE) from the University of Puerto Rico at Mayagüez (RUM) in 1978.

Over the past three decades, his work has focused on developing solutions to infrastructure problems in Civil, Structural, and Mechanical Engineering, utilizing local and state codes in coordination with building officials. His primary clients have included residential, commercial, and industrial sectors, primarily in North America, with additional experience in Europe and Australia.

His work over the past 30 years can be summarized in the following areas:

• The design and development of civil works, structural systems, and MEP (Mechanical, Electrical, and Plumbing) for residential, industrial, pharmaceutical, veterinary, emergency urgent care, and other commercial facilities.

• Design, analysis, and development of air-supported structures across North America for use in storage, soccer, tennis, and swimming facilities.

• Design and analysis of greenhouses, gazebos, garages, metallic and timber structures, and AAC (autoclaved aerated concrete) structures.

• Design of fall protection structures for a wide range of applications, including train stations, bus terminals, and aircraft hangars.

• Forensic investigations of structural failures, fires, accidents, slip and fall incidents, retaining wall failures, and connection failure analysis.

Dr. Gonzalez, PE, contributed to the development of both the original and revised ASCE 55 code for air-supported structures. He has authored peer-reviewed articles on structural engineering and has been a speaker at numerous conferences over the past several decades. He holds eight patents in the fields of ophthalmology, compound meters, and breathalyzers.

Dr. Ali Elawadi, PhD, PE, is the Chief Engineer at DOTec Engineering in St. Charles, Missouri. He is a Senior Structural Engineer with extensive experience in structural design and analysis for residential, commercial, and industrial buildings. He holds a Professional Engineer (PE) license in 10 states, including California, and earned his PhD in Civil Engineering from the University of Missouri, in addition to Master’s and Bachelor’s degrees from Zagazig University in Egypt.

With over 12 years of experience in the design and analysis of concrete, steel, aluminum, and composite structures, Dr. Elawadi is highly proficient in finite element modeling and advanced structural analysis. He is skilled in using industry-standard software such as SAP2000, ETABS, SAFE, RISA, ABAQUS, and others. His project portfolio includes the design of marina foundations, air-supported domes, and complex aluminum enclosures.

Dr. Elawadi also brings academic and research experience, having led NSF- and MoDOT-funded research projects at the University of Missouri. His academic focus included reinforced concrete structures and camber prediction methods for bridge girders. He is an active member of the American Society of Civil Engineers (ASCE) and the American Concrete Institute (ACI), and has received multiple honors, including the Best Master’s Thesis Award and the Egyptian Engineering Syndicate Award.

Daniel Ryerson, EIT is the acting COO/CFO at DOTec Engineering. He is a graduate of the University of Missouri – St. Louis (UMSL) / Washington University in Saint Louis (WashU) Joint Engineering Program (JEP). He has a Bachelor of Science degree in Civil Engineering (structural emphasis). Daniel also holds a Bachelor of Arts degree in History from UMSL.

Daniel has many diverse experiences from which I have been equipped to solve problems in a unique way; this includes experience with legal research, policy development, document control, operations and personnel management, and the development and implementation of training policies and procedures. 

Daniel is currently a fulltime graduate student pursuing a PhD in Aerospace and Mechanical Engineering at Saint Louis University with a projected graduation date of May 2026.

Dr. Moe Gharib is the Vice President of Structural Engineer with over 27 years of comprehensive experience in the design and analysis of various structural systems, including steel, reinforced concrete, wood, light gauge steel (LGS), and foundation systems. His expertise encompasses not only structural design but also the operational management of steel structure manufacturing facilities, as well as construction costing and site erection activities.

Dr. Gharib holds a Ph.D. in Structural Engineering from Ain Shams University (2016), where his research advanced structural behavior understanding and design methodologies. He also earned an MSc in Civil Engineering Technology (2008) and a BSc in Civil Engineering (1998), providing a strong academic foundation for both his technical and managerial roles.

Throughout his career, Dr. Gharib has combined academic rigor with practical industry leadership. He has authored six published papers and received 25 citations, reflecting his ongoing commitment to innovation, quality, and efficiency in structural engineering.

Recognized for his reliability, precision, and leadership, Dr. Gharib continues to make impactful contributions to complex projects—bridging the gap between design, fabrication, and construction.

Daniel Johnson is the Vice President of Civil Engineering at DOTec Engineering in St. Charles. With a solid foundation in civil engineering and a focus on specialized mechanical systems, Dan continues to support DOTec’s mission to deliver reliable, code-compliant, and innovative engineering solutions. 

Dan has over two decades of entrepreneurial experience in the building industry. With business experience, Dan supports DOTec’s growth and innovation in multiple aspects, specializing in civil engineering. 

Cameron Giering is the Vice President of MEP Engineering at DOTec Professional Corp, bringing eight years of expertise in mechanical systems design and project leadership. Specializing in HVAC load analysis, energy code compliance, and mechanical systems integration, Cameron has successfully led projects across industrial, commercial, and residential sectors.

His diverse project portfolio includes fuel storage facilities, restaurants, cannabis oil extraction and packaging plants, tanks and oil heaters, and residential neighborhoods featuring rooftop HVAC units. Cameron is proficient in industry-standard software such as AutoCAD, CHVAC, HAP, Comcheck, CBECC, Excel, and Mathcad, enabling him to deliver efficient, code-compliant, and cost-effective engineering solutions.

As a licensed Mechanical Professional Engineer (PE), Cameron combines deep technical expertise with strategic leadership to ensure the successful delivery of complex MEP projects.