Rajakylä's achievements include the bronze in the 50 m freestyle at the European Junior Championships in Linz, Austria in 2002, the bronze in the 4×50 m medley relay at the European Short Course Swimming Championships in Wien, Austria in 2004 and the bronze in the 50 m butterfly at the European SC Championships in Trieste, Italy in 2005 with a time of 23.17.

[1] Rajakylä finished third in the semi-finals of 50m butterfly at the European LC Championships 2006 in Budapest, Hungary, but was left on sixth position in the finals.

[2] In December, at the European Short Course Swimming Championships 2006 in Helsinki, Finland, Rajakylä managed to achieve silver medal status in the men's 4 x 50m medley relay.

[10] After his retirement from the sport, Rajakylä met Indian Hindu spiritual leader Amma in Finland in 2009, which led him to live in an ashram in Kerala, India, from six to nine months per year from 2011 to 2017.

Rajakylä works as a swimming coach, and he lives in Santa Cruz, California, with his American wife whom he had met in the ashram.