After making a brief cameo in karting, in the BNL Golden Trophy, Hartog began his full time racing debut in the 2019 Porsche Carrera Cup Benelux, where he finished in third, picking up two wins, four pole positions and eight podiums, with Bas Koeten Racing.

He also drove for MRS GT-Racing in the 2019 Porsche Supercup for the seventh round in Spa-Francorchamps, where he finished in 18th.

He came 10th in his appearance at Spa-Francorchamps in the 2020 Porsche Supercup, but as he was guest driver, he was ineligible to score points.

His career perked up in 2021, where he got a full time drive in the 2021 Porsche Carrera Cup Germany for Black Falcon Team TEXTAR.

[16] In 2024 Hartog joined Kellymoss to make his debut in the Porsche Carrera Cup North America.

[17][18] In early 2024, he made his GT3 debut with Dennis Marschall and Dustin Blattner for Car Collection Motorsport in the second round of the Middle East Trophy at the 6 Hours of Abu Dhabi.