After karting in various Rotax Max powered classes Szymkowiak was selected to compete in the Formula BMW Talent Cup in 2013.

Szymkowiak made his GT3 racing debut with HTP Motorsport in a Bentley Continental GT.

To qualify to race GT3 machinery in the VLN and the 24 Hours of Nürburgring Szymkowiak needed a DMSB Permit Nordschleife Grade A.

[7] To receive the permit Szymkowiak raced in the 2015 DMV Münsterlandpokal entered on two cars, one BMW M235i and one Honda Civic Type-R.[8][9] With HTP Motorsport switching to the new Mercedes-AMG GT Szymkowiak got a new teammate for the Blancpain GT Sprint Series, Bernd Schneider.

As a rising talent he won the Sean Edwards Trophy, over other finalists Dries Vanthoor and Luca Stoltz.