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Justin Den Herder’s was recently promoted to Vice President & Principal of TYLin.
He cares deeply about the impact of the built environment on the natural world and leads the firm’s sustainability, mass timber, and computational design communities of practice. He oversees the firm’s Building Equity Initiative which offers pro- & lo-bono design services to public and non-profit programs. His love of trees and poetry have informed his 17-year career as a structural engineer.
Justin has collaborated on more than 500 projects. He is especially fond of working on reuse projects and takes pride in designing public projects – libraries, museums and other civic institutions. His class at Cooper Union at the Irwin S. Chanin School of Architecture, titled ‘Structural Poetics’ explores the creation of efficient, elegant, equitable structures.
Pictured: Amherst College - Massachusetts
Structural Engineer: TYLin


See how Xcel Energy works inside one of Denver’s premier mass timber offices. Walk the space, ask questions, and connect with peers in this small-group tour.

This tour dives into the real-world process behind CCU’s standout chapel—from concept to installation—with insights from the full project team.

Learn how mass timber’s lightweight design, off-site precision, and sustainability benefits are creating new options for adapting and extending existing buildings.