Michael SteffenMichael Steffen has joined HNTB Corp.’s Kansas City, Mo., office as senior systems project manager, specializing in positive train control. He will provide leadership in design reviews and help develop safety-critical system requirements and tracing. Steffen previously served at a rail technology supply company on the Denver Eagle P3 rail project, where he helped implement the first interoperable train control/PTC-based wireless crossings system in North America.

Jessica ChristiansenMinneapolis-based engineering firm Michaud Cooley Erickson recently appointed principals Jessica Christiansen and Ron Kruzeski to its 10-member operations committee. Christiansen joined the firm in 2008, while Kruzeski has been with MCE since 1991.

Daniel GramsGreenfire Management Services of Milwaukee recently hired Daniel Grams as project engineer. Grams, who holds a bachelor’s degree in architecture from the University of Minnesota, previously worked with GMS as a preconstruction and project engineer intern. The firm is a subsidiary of the Potawatomi Business Development Corp., a state-certified Native American-owned company.

Michael Baker International recently promoted Kenton Zinn to the position of director of its Great Lakes region, which consists of Minnesota, Iowa, Missouri, Wisconsin, Illinois, Michigan, Indiana, Kentucky, Ohio and West Virginia. Zinn, based in Chicago, has more than 23 years of bridge design and project management experience.