[2] Rubinshteyn helped Zlatorog reach the 2017 Slovenian League playoffs as the third seed, but they eventually lost to Rogaška in the Semifinals.
On December 16, 2017, Rubinshteyn recorded a career-high 29 points, shooting 19-for-20 from the free throw line, along with six rebounds and four assists in a 94–99 loss to Borisfen Mogilev.
[4] However, on February 15, 2019, Rubinshteyn parted ways with Legia to join Hapoel Be'er Sheva of the Israeli Premier League.
[7] On January 24, 2021, Rubinshteyn signed with Maccabi Haifa of the Israeli Basketball Premier League for the 2020–21 season.
In July 2015, Rubinshteyn participated in the 2015 FIBA Europe Under-20 Championship Division B, where he averaged 12.4 points, 4.1 rebounds and 4.4 assists, leading the U-20 Belarusian team to the fifth place.