 Rimša works as a consultant at Vilnius Academy of Fine Arts and as an expert of coins design at the Bank of Lithuania.Rimša is a member of the editorial board of academic journals "Lietuvos istorijos metraštis" (Lithuanian History Annals) and "Numizmatika", published by the Lithuanian National Museum.He is a member of the Poland Heraldry Association and the chairman of the Lithuanian Heraldry Commission.