David Hartlmayr has been involved in the single cell proteomics field since over five years. In 2019, he joined Karl Metchler’s group in Vienna as a master student, working on single cell sample preparation  for mass spectrometry analysis.  Since 2021, David has joined Cellenion, where he works in the product development team, with a main focus on developing new methods for single cell sample preparation. In 2023, David has participated in establishing a fast and robust workflow for tissue proteomics, in collaboration with Fabian Coscia’s group at the MDC, Berlin.