V.A. Musin headed the Saint Petersburg branch of the Institute of State and Law of the Russian Academy of Sciences. In 2008, V.A. Musin was elected corresponding member of the Russian Academy of Sciences.
In 2004–2008, V.A. Musin was a Deputy Delegate from the Russian Federation in the European Commission For Democracy through Law (Venice Commission).
In 2006–2009, V.A. Musin served as an ad hoc judge at the European Court of Human Rights.
From 2009 to December 22, 2015, he was a member of the Board of Directors of Gazprom, PJSC.