Jankech began with football in his native town Šaľa. He played for Šaľa from the age of ten, later he left to play for Uherské Hradiště, then played for TTS Trenčín and he ended his career in TŽ Třinec as 29 years old. The first club in which he started coaching was TŽ Třinec. His playing career was not as successful as his coaching career.
On 4 July 1995 he became the second Slovak football trainer after Jozef Vengloš. Jankech completed two qualification cycles, first for Euro 96 and second for the 1998 World Cup. He achieved several very good results against strong opponents such as victories over Czech Republic, Poland and Croatia at the friendly match and draws against France and Yugoslavia. He failed to progress at the championship.
He was also a part in a Czech online football manager BREJK, where he was a pro bono 100% (best in game) couch for 15 days for a winner of brejktip, quiz in that manager. He was there nicknamed as Jozef Hlavatý.
picture from game