Interested in a career in photonics? This podcast could be for you. Early Stage Researcher on the EU MEFISTA Project, Moritz Bartnick, hosted at EPFL Switzerland, talks about his research work to non-scientist Project Manager Karola Woods, at Aston University, UK. Moritz explains his research into frequency combs in the 2 micron range, describes what optical fibres are and how to make decisions about your career. MEFISTA is a physics project looking at Multi-Scale Fibre-Based Optical Frequency Combs and is funded by EC Horizon 2020 under Marie Sklodowska Curie Grant 861 152. This is episode 3 of 6, with a new half-hour episode being released every month with a different MEFISTA Researcher each time.