Professor Riga Technical University, Faculty of Civil Engineering, Institute of Heating, Gas and Water Technology, Institute of Water Systems and Biotechnologies Department of Water Engineering and Technology (2005-now); Chief Executive Officer Riga Technical University, Building Science Centre (2005-2011); Deputy Dean Riga Technical University, Faculty of Civil Engineering (2003-2011); Vice-Rector for Research, Riga Technical University (2012-now); Vice-Chairman Latvian Council of Science (2017-2020); Chairman of Advisory Board Latvian Council of Science (2021-now); Deputy Chairman of the Board Riga Water Ltd (2021-now). Assistant, Riga Technical University, Faculty of Civil Engineering, Institute of Heating, Gas and Water Technology, Department of Water Supply and Plumbing (1996-1999); Lecturer, Riga Technical University, Faculty of Civil Engineering, Institute of Heating, Gas and Water Technology, Department of Water Supply and Plumbing (1999-2005); Consultant Consultant for many national and EU projects about water management, expertise concerning drinking water treatment and distribution in several local and international project (200-now);