Diploma of technical-tourist maturity. 1992-1998: research support activities at the Ca' Foscari University, Department of Environmental Sciences, with freelance work contracts. 1998-2011: permanent position, as technician, at the Ca' Foscari University, Department of Environmental Sciences.
She was assigned, by convention, to the Institute for the Dynamics of Environmental Processes of the CNR (IDPA), formerly Centre of Study on Chemistry and Technologies for the Environment. From 1 November 2011 employee CNR (following mobility between entities) at the Institute for the Dynamics of Environmental Processes (IDPA), profile C.T.E.R. - VI level. From 2004 to 2019 she assumed the role of Administrative Secretary of IDPA. In June 2019 she moved to the Institute of Polar Sciences (ISP) where she serves as Administrative Secretary.
In the first years of activity Valentina Cester has taken care of the logistic part of the expeditions in Antarctica relatively to the activities of the researchers of IDPA and of the group of Environmental Analytical Chemistry of the University Ca' Foscari. She has also played an active part in the organization of the National Conferences of the Environmental Contamination-PNRA Sector.