Tom Marseille Promotion Announcement

March 2024

Säzän Group announces the promotion of Tom Marseille to Managing Principal of the Washington offices. Having joined Säzän Group in 2021 to help drive growth, increase firm focus on sustainability, and contribute to strategic leadership, Tom will apply his 30 years of leadership experience in taking on an increased oversight role, driving company performance and operational objectives.


Tom’s passion is to deliver creative, high-performance building solutions to clients—solutions that balance innovation with what is practical and maintainable, are resource-responsible, future-forward, and improve the indoor environmental quality of building occupants. Tom fosters integrative thinking into a design process that consistently leads to healthy and resilient approaches for the community. He is a recognized pioneer in the design and advocacy of zero net energy buildings and building decarbonization.


An author of numerous published papers, a frequent speaker, and winner of national and international awards, Tom is known in the industry for delivering excellence in engineering consulting, high-performance design, and measured operational performance outcomes.


Tom has served in leadership roles for global engineering organizations over the course of his career, has served on multiple boards for industry non-profits, and currently serves on the Membership Advancement Committee for AIA in Seattle.