Hagen Engineering International
P.O. Box 21364 . St. Paul, MN 55121-0364
651-686-5686 .

The HEI Team

A shared vision produces greater rewards.

HEI recognizes that a shared strategic vision is the first step to managing a successful relationship. We can help define realistic requirements and added benefits.

Meet HEI's world-class team of highly skilled professionals that help us offer you the widest range of services and expertise.

dougbaylesDoug Bayles, P.E.


Doug Bayles, P.E. has over 33 years of engineering experience (11 of those with HEI as Vice President/Senior Engineer) in the design, construction and maintenance of bulk petroleum facilities worldwide. Doug is a licensed Professional Engineer in 48 States, Guam, and 6 Canadian Provinces. Doug has designed, constructed and maintained commercial and military terminal facilities throughout the U.S. and abroad. He is also a certified API 653 Inspector, #1904, for over 28 years.

In addition to his experience in the petroleum industry, Doug worked in the design and construction of water and wastewater tanks, including fire protection tanks, elevated water storage tanks and municipal drinking water tanks.

Doug's professional expertise has been recognized by his colleagues as demonstrated by being selected to be a member on the API Committee on Refining Equipment / Subcommittee on Above Ground Storage Tanks. His petroleum specification knowledge includes: API 570, 653, 650, 510, 520, 1104, Std & RPs; ASME B31.1, B31.3, B31.4, and B31.8.,UFC, UL, ANSI, AWWA, ASCE, and NFPA codes and various industry standards in conjunction with OSHA, EPA and DOT government regulations (40 CFR 112 and 280, 49 CFR 191, 192 and 195). In addition to his Professional Engineering certification Mr. Bayles has obtained his California Qualified Stormwater Designer Certification.

Doug received his Bachelor of Science in Civil Engineering from the University of Evansville in Evansville, IN.

Click here for a list of active licenses that Doug holds.

Contact Information: ; Cell: (918) 845-8125


jasonericksonJason Erickson

Project Manager/Designer

Jason has been with Hagen Engineering for the past 23 years. He has 27 plus years of project detailing and drafting experience in the steel plate construction industry. In addition to AutoCAD detailing, Jason has spent a majority of last 5 years as a Field Project Manager, overseeing the repair and maintenance of Gas Holders. He specializes in the installation of dry seals within the gas holders as well as managing the steel repairs. He possesses a thorough working knowledge of API STD 650, API STD 620, ASME and AWWA D-100. Jason has a degree in Architectural Drafting from Northwest Technical Institute in Eden Prairie, MN. Jason also completed one course in welding at Saint Paul Technical College and completed the OSHA 10-hour Construction program. Jason has learned to optimize the use of the latest and best practices of AutoCAD detailing.

Contact Information: ; Cell: (651) 357-8984

tyhagenTy J. Hagen, P.E.


Ty has 30+ years experience in the design of steel plate structures. He is a member of several API committees and is past chairman of the API Subcommittee on Manufacturers and Contractors. In 2010 Ty was recognized for 25 years of service on API CRE AST committees. Hagen has a B.S. in civil engineering from the University of Illinois and is a registered professional engineer in 24 states and a registered General Contractor in 2 states.

Ty has had the opportunity in his career to be responsible for a variety of operational groups including Engineering, Drafting, Production Control, Marketing, Estimating and Business Development.

Ty is considered a leading expert in the following:

Contact Information: ; Cell: (651) 260-6244






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