Sheri Thillman is the Executive Assistant to Founder and CEO Heide Olson at All In One Accounting. Sheri serves as a trusted partner behind the scenes, helping manage priorities, coordinate opportunities, and create the space for Heide to focus on leading the organization, strengthening relationships, and shaping AIOA’s future. With a thoughtful, service-minded approach and a talent for bringing order to complexity, Sheri helps ensure leaders are connected, prepared, and positioned to make the greatest impact possible.
Outside of work, Sheri enjoys spending time outdoors, staying active, and recently began taking salsa dancing lessons. She brings the same energy, curiosity, and enthusiasm to her personal life that she brings to supporting the AIOA team every day.
