Mátéfi, an ethnic Hungarian from Transylvania,[2] began her career by CSS Târgu Mureş, from where she also made to the Romanian national selection and later became the captain of the team.

[3] Mátéfi received her coaching diploma yet in 1998 and after retiring from professional handball in 1999 she began to train the youth sides of Dunaferr.

[4] The team, that climbed back to the top-tier division just in 2006, performed under the guidance of Mátéfi superbly and reached the fourth place in the Hungarian championship both in 2009 and 2010, in this way winning the right to take part in the EHF Cup.

In the summer of 2009 she was appointed as the head coach of the Hungarian women's national team, replacing Vilmos Imre in the position.

[5] Mátéfi remained in charge both by her club and the national team until November 2010, when Beáta Bohus took the coaching seat of Békéscsaba to help her to be able to concentrate fully on her international duties.