Tammer played youth football with VV de Meeuwen, DSO/Ultrajectum, UVV and Ajax.
He experienced his senior breakthrough at Excelsior, where he became the 1991–92 Eerste Divisie top goalscorer, and subsequently was mostly known for his stint with Heerenveen.
[2] Tammer also experienced success at Go Ahead Eagles, and almost made a move to Spanish club Osasuna.
The transfer did not go through in the end, as representatives of Osasuna believed that Tammer had made negative comments about the club.
After this, he continued playing at amateur level,[2] where he retired as part of HBS Craeyenhout in 2010, where he was also an assistant coach in his last season due to injuries.