2002 saw Rosenzweig step up to JICA karts, again competing in the Super 1 championship, staying there for two seasons with an additional shot at the Andrea Margutti Trophy in 2004.

Rosenzweig remained in the States to contest the most part of his 2007 karting campaign, claiming both the ICA Florida Winter Tour and the Canadian ICC Championship, and finished runner-up in two other championships – Stars of Karting National and East series – losing out to British racer Scott Jenkins on both occasions.

He also finished thirteenth at the SuperNationals event in Las Vegas, Nevada, beating the likes of Raphael Matos and Phil Giebler.

He would later join the team for the final two rounds of the 2009–10 GP2 Asia Series, replacing Marcus Ericsson alongside Josef Král.

[6] Rosenzweig made his main series début in the non-championship GP2 Final in 2011 with the Super Nova team.

He returned to the series for the penultimate round of the 2012 championship at Monza, replacing Josef Král in the Addax team, alongside Johnny Cecotto Jr.[7] Rosenzweig moved into the Formula Renault 3.5 Series for the 2010 season, remaining with his Euroseries team, Carlin.

Rosenzweig remained in the series for 2011, moving to the Mofaz Racing team where he was partnered with first Chris van der Drift and later Fairuz Fauzy.