Roy began karting at six before moving to the Hungarian G-Kart Racing team where he finished fourth overall in the FIA Central European Zone Trophy and the Hungarian Karting Championship. He moved to the Italian Morsicani Racing Team in 2007 where he raced in the Italian Open Masters and the 13th Winter Cup in Lonato del Garda. Nissany came second in the Mille Dollari race in Pomposa with Gandolfi Racing Team.
Nissany made the move to car racing in the 2010 Formula Lista Junior championship with Daltec Racing where he finished 8th in the standings with 43 points where he scored pole in Monza. He then moved to the ADAC Formel Masters where he drove for Mücke Motorsport. He finished his season with two podiums, 81 points and 11th in the standings. Nissany stayed with the team for a second year where he took 98 points, a single win and 9th in the standings.
He stuck with the team for a third year but made the move to the FIA Formula 3 European Championship although he only managed 11 points during his rookie year and 22nd in the standings. Roy spent this last year in the FIA F3 European Championship with Mücke Motorsport for their fourth year, managing 26 points and 17th in the standings.
Nissany moved away from the team and made the move to the Formula
Renault 3.5 Series in 2015 where he joined Tech 1 Racing where he took a single podium and 27 points to claim 13th in the standings. From there, Roy moved to the Formula V8 3.5 series with Lotus where his car racing career began to improve. He managed to rack up 189 points with three wins and three pole positions to take 4th in the championship. 2017 was his final year outside of the FIA Formula 2 Championship and he spent it alongside RP Motorsport in the World Series Formula V8 3.5 where he took 201 points, 6 podiums and a single win to finish 5th in the standings.
FIA Formula 2
Nissany made the leap to FIA Formula 2 where he joined Campos Vexatec Racing. His rookie season didn’t go to plan as he finished with a single point and 22nd in the standings before being replaced for the last two rounds by Roberto Merhi. Roy was unable to compete for 2019 as he suffered a training injury at the beginning of the year that ended him being unable to compete for the year.
Nissany makes his return this year with Trident as he races in car 22 alongside Marino Sato.