Julio Peironcely received his PhD from Leiden University for his research on automated de novo metabolite identification with mass spectrometry and cheminformatics. After graduating, he started working as a data science consultant in companies like Deloitte and Microsoft. He started his own company, Data Fitter, where he provides freelance and consulting services in data science. In this capacity, he has worked as Head of Data Science team at Schiphol Amsterdam Airport and Lead Data Scientist at VodafoneZiggo. He also founded Next Scientist to help PhD students stay motivated, graduate on time, and find a job or position after graduation.