Uuno Vallner has been the initiator of several key e-government projects for Estonia, including the X-Road, the eesti.ee state portal, internet elections and the open data portal. Several information policy documents have been drafted under his aegis, including interoperability frameworks and the green book on open data. He has represented Estonia in the e-government working group of the European Commission, in the working groups of the ISA European interoperability programme and in European working groups on open data. Uuno is TOGAF certified architect, member of Association of Enterprise Architects.

Uuno graduated from the Faculty of Mathematics of the University of Tartu and received a degree in technical sciences from the Soviet Academy of Science in Moscow. He has worked in the Institute of Information, the Government Office and the Ministry of Economic Affairs and Communications.

In 2017, the President of Estonia awarded Uuno Vallner the Order of the White Star for outstanding achievements in advancing Information Technology and e-government in Estonia.

He speaks Estonian, Russian and English.