Rungeen belonged to an old bourgeois family of Turku. His career as merchant began in 1711, just two years before the Russian occupation of Finland. After the almost decade-long occupation Rungeen was one of the most active Turku merchants who contributed rebuilding of the city. According to the surviving taxation documents, Rungeen was the third riches merchant of Turku. Rungeen funded for example renovation of the city hall, main guard building and a new bridge over river Aura. In 1732 he made an offer for building a new city hall but eventually a slightly more expensive plan of the City Architect Samuel Berner became selected.