Twan is born in Heerlen (NL) at the heart of the Euregion Meuse-Rhine and worked with the city of Heerlen, in different positions & with varying responsibilities on different projects & programs. He has been secretary of the EU-funded URBAN-II program Heerlen from 2000-2004. After that he was the head of office of the bureau of international affairs of the city of Brainport Eindhoven and for that advisor the mayor. Twan has been involved in over 50 projects from different schemes like Urbact, INTERREG A,B,C /Europe, FP 6 & 7 and Horizon 2020. He has been a member of the Dutch National Advisory Board on transnational programs and member of the Steering Committee for INTERREG III & IVB Northwest Europe. Since 2014 he is operating his own business Euquest BV, that is part of the EU Affairs alliance. He helps developing organisations developing and delivering their European agenda a.o. through EU funding schemes. He worked a.o. as a lead and ad hoc expert for the current Urbact programme.