Since 2009 I am member of the ANTARES Collaboration operating a neutrino telescope in the Mediterranean Sea. In 2010 I obtained a three-year fellowship via the Marie-Curie COFUND action “EuroTalents” and successfully conducted an extensive research project on the “Searches for sources of astrophysical neutrinos with the Antares detector”. The main result of the project is an improved method to search for clusters in skymaps using the auto-correlation of individual events. I recently published its application to the ANTARES high-energy neutrino data and a search for correlations with other messengers like GeV gamma-rays and potential source candidates like massive black holes (“Searches for clustering in the time integrated skymap of the ANTARES neutrino telescope”, JCAP 05 (2014) 001. In recognition to my technical contributions (e.g. development of an energy reconstruction algorithm and a novel data format for physics analysis which rapidly became the standard format within the ANTARES collaboration) I was appointed as convener of the working group “Analysis Tools: Software and Reconstruction” and therefore became member of the Antares Steering Committee in 2010. I also joined the sub-collaboration TAToO for which I helped to develop and commission an online alert system between ANTARES and networks of optical, robotic telescopes, the Swift X-ray satellite and the HE.S.S. gamma-ray observatory (“The Antares telescope neutrino alert system”, APP 35 (2012) 8). Within the collaboration I am serving as member of the Steering committee, internal referee for several physics papers and was nominated member of the Publication Board between 2012-2016.