Born in July 1995, Sietsma began his career with FC Groningen, joining the Eredivisie club’s Academy during the 2006/07 season.
He progressed through the youth ranks at the Noordlease Stadion, making his debut for the Under-19s as a 17-year-old in May 2012.
At the start of the 2012/13 campaign, Sietsma took on the role of Groningen’s first-choice goalkeeper at Under-19s level and over the course of the next two seasons made 45 appearances between the sticks.
The goalkeeper’s form at club level earned him a call-up to the Holland Under-19s squad in October 2013 for their double-header against Turkey. An unused substitute in the first match, Sietsma played the entire second match and helped his country to a 3-1 win.
Sietsma also featured on the bench for Groningen’s reserves side on four occasions during the second half of the 2013/14 campaign but had to wait until late August of the next season to make his debut for them.
He played a total of five times for the reserves in 2014/15 before opting for a move to Eredivisie club SC Heerenveen in February 2015, ending a nine-year association with FC Groningen.
In his first season with De Superfriezen, Sietsma made four appearances for the reserves and featured on the bench for the first team – his first involvement in senior football.
He was named among the Heerenveen substitutes for the first four matches of 2016/17 before moving on loan to Jupier League side FC Emmen, with whom he played six times.