He was selected in the ' Under-18 side for the National Academy Week tournament in 2005. The following year, he made the short move across the Jukskei River to join East Rand-based side the. He was part of the Under-19 squad for the 2006 Under-19 Provincial Championship and the Under-21 squad for the Under-21 Provincial Championship in 2008. Van Jaarsveld represented Pretoria-based university side in the inaugural edition of the Varsity Cup in 2008, scoring their third ever try in the competition late in their opening-day 31–31 draw against. He made a total of eight appearances as he helped them to third spot on the log and a semi-final appearance in the competition, where they lost 44–47 to eventual winners. He also made in excess of 50 appearances for UP Tuks in the Blue Bulls' amateur Carlton League.
Pumas
His first class debut came after he joined Witbank-based side the for the 2008 Currie Cup First Division. He played off the bench in their 32–24 victory over the at the Adcock Stadium in Port Elizabeth, with a second appearance coming against the in Potchefstroom. He made a further three appearances off the bench during the 2009 Vodacom Cup competition before he established himself as a first-team regular during the 2009 Currie Cup First Division, playing in eleven of their matches during the competition. He made his first start for the Pumas in their 47–12 victory over the in East London and scored his first points when he got two tries in their 95–14 victory over former side the in Kempton Park. However, he broke his leg in their semi-final match against the and missed the final and the promotion play-offs, which saw the Pumas promoted to the 2010 Currie Cup Premier Division at the expense of the. However, Van Jaarveld did pick up a personal accolade, winning the Pumas' Most Promising Player of the Year award. This proved to only be a minor setback to Van Jaarsveld's career as he returned some five months later to play in the 2010 Vodacom Cup, making six appearances. He played in the Premier Division of the Currie Cup for the first time in 2010 and, after playing off the bench for the first four games, he started in seven consecutive matches and scoring his only try for the at this level in their match against in Cape Town before an ankle injury ruled him out for the remaining matches of the season. After playing a further six matches during the 2011 Vodacom Cup competition, he had another full season playing in the Currie Cup Premier Division in 2011, which saw the Pumas being relegated to the First Division after a league restructure saw the Premier Division being reduced from eight teams to six. He played in eight matches during the 2012 Vodacom Cup as they reached the semi-finals of this competition. He also played in eleven matches of their 2012 Currie Cup First Division season, which saw the Pumas reach the final of the competition, where they lost 26–25 in the final to the. In a five-year career at the Pumas, Van Jaarsveld appeared in 73 matches and scored eight tries.
He joined Bloemfontein-based side the for the 2013 season. He made two appearances for the during the 2012 Vodacom Cup competition, being lauded by coach Joe Beukes, who said after his debut against the : "He was excellent against the Eagles. He has a lot of Brüssow in him. He defends well, is omnipresent at the breakdown and steal balls regularly". However, in his second match against the, he tore his medial collateral ligament and was ruled out for the remainder of the season. He returned to training at the end of 2013 when he was included in the 52-man wider training group for the Super Rugby side, the. Although he wasn't in reckoning for the Cheetahs at the start of the 2014 Super Rugby season – instead making six appearances for the in the 2014 Vodacom Cup – he made his Super Rugby debut on 26 April 2014 when he played off the bench in their 35–22 victory over South African Conference rivals, the. Two more substitute appearances followed against the and the return leg against the, before Van Jaarsveld made his first start in the competition against the and taking just eight minutes to score the first try of the match as the Cheetahs ran out 27–20 winners. In July 2014, coach Rory Duncan announced that Van Jaarsveld would captain the side during the 2014 Currie Cup Premier Division season.
Bayonne
Van Jaarsveld joined French Pro D2 side prior to the 2018–19 season on a two-year contract.
