Nataliia Tymkiv has been an active Wikimedia contributor since 2011, beginning on Ukrainian Wikipedia, where she later served as an administrator. She joined the board of Wikimedia Ukraine in 2012 as Treasurer, helping establish the chapter’s financial systems, reporting practices, and grantmaking processes. She also served as volunteer Executive Director and later returned to board leadership, supporting the organization’s growth, staff development, and strong relationships with donors, partners, and community members.

Nataliia concluded her term on the Wikimedia Foundation Board of Trustees in December 2025, where she served in multiple leadership roles, including as Chair of the Board. Her tenure was marked by a strong focus on governance and accountability, as well as close engagement with Wikimedia communities and affiliates around the world.

In her professional career, Nataliia served as Financial Director of the Centre for Democracy and Rule of Law, a Ukrainian nonprofit focused on media policy and human rights, where she held leadership responsibilities in executive and financial management. She currently serves on the organization’s Supervisory Board.