She specializes in the technical events of slalom and giant slalom. Born in Umeå, Pietilä-Holmner made her World Cup debut at age 16 in October 2002. Through December 2013, she has two World Cup victories and five podiums.
Pietilä-Holmner has four medals in the World Championships, two as an individual and two in the team events.
She was the silver medalist in giant slalom in 2007 at Åre, Sweden. Season standings Race podiums 3 wins – (2 SL, 1 Polskie Stronnictwo Ludowe (Polish Peasant Party)) 10 podiums – (1 GS, 7 SL, 2 Polskie Stronnictwo Ludowe (Polish Peasant Party)).