Dr Quaglia obtained his Ph.D. in 2012 from Politecnico di Torino, Italy. He has then worked at Politecnico di Torino as a Research assistant, on the design, characterisation and linearization of integrated power amplifiers for microwave backhaul.

In 2015 he worked in Huawei Technologies, Milano, Italy, as a MMIC designer, developing components for the first 5G millimetre-wave demonstrators.  He later joined Cardiff University as a Marie Skłodowska Curie fellow, working on a project with Prof. Steve Cripps on advanced power amplifier techniques. In September 2017 he became a Lecturer at the School of Engineering of Cardiff University. His current research involves advanced techniques for the characterisation of millimetre-wave transistors, the design of high efficiency broadband amplifiers, and the development of methods for the improvement of linearity/efficiency trade-offs in millimetre-wave transmitters.

Dr Quaglia has published more than 80 peer-reviewed papers and co-authored 2 books. In 2009 he received the Young Graduated Research Fellowship from the Gallium Arsenide Application Symposium (GAAS) Association. He is an elected member of the IEEE MTT Technical Committee 12 (Microwave High Power Techniques).