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Integrated Design Engineers LLC


Integrated Design Engineers (IDE) is a structural engineering firm based in Seattle providing superior structural engineering services to developers, owners, and architects. Founded by two experienced and talented structural engineers, Ignasius Seilie and David Hornsby, the firm is committed to excellence, teamwork, and practical structural solutions. Keeping the firm efficient enhances their ability to have direct involvement of these two principals in all of its projects, and to provide the highest quality structural engineering to every client.

IDE believes that a project should begin with good communication between the owner, the architects, and the structural engineers. From buildings and renovations, to sculptural canopies, IDE's portfolio contains projects from Washington state to around the world that represent the engineering expertise of its diverse team.

1015KCsmallBizAwards115Dean Iacovelli, Microsoft, presented the Minority-Owned Small Business of the Year award to Lindsey Burns and Ignasius Seili with King County Executive Dow Constantine

King County Executive
Dow Constantine
Dow constantine portrait

Read the Executive's biography