Diane Seidule is an experienced tax professional currently serving as the Director of Sales & Use Tax at Ryan since September 2023, where the focus is on optimizing tax strategies and maintaining integrity in compliance. Prior to this role, Diane was VP and Partner at Avalara from October 2020 to September 2023, overseeing tax recovery and audit defense for Fortune 100 and enterprise companies, leading to significant financial savings and improvements in tax mitigation strategies. Earlier, Diane was the Managing Partner at TTR from September 2010 to September 2020, directing tax recovery and audit defense initiatives for Fortune 1000 companies, emphasizing correct tax compliance and answers.
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