Sia maintains offices and coworking arrangements across multiple U.S. markets, including New York City, Charlotte, Greater Seattle, San Francisco Greater Bay Area, Los Angeles, Houston, Atlanta, Baltimore, Chicago, Washington D.C. Work Authorization. At Sia, the FDE is both a field engineer and a genuine champion of AI adoption: they don't just deliver a technical solution, they make sure it becomes embedded in how teams actually work, that it's understood and adopted, and that it creates measurable value.