Rouvas was signed in 1991 by record company Polygram. A few months later, he performed at the Thessaloniki Song Festival. His first single was called Parta. He has won several awards at the Hellenic Music Awards including Best New Singer, Best Song and Best Stage Performance.
He has also played a role in reconciliation efforts with Turkey. In 1997, he performed on stage with Turkish singer Burak Kut in a concert in UN-controlled territory on Cyprus. For this, he was awarded the International Abdi Ipekci Prize for understanding and co-operation.
In 2004, he was selected to represent Greece in the 2004 Eurovision Song Contest, performing the song Shake it by Nikos Terzis. Clearly learning the lesson from the previous two winners of the contest Marie N. and Sertab Erener that, in an era of televoting, a Eurovision entry must now also be a visual spectacle in order to succeed, Sakis produced a raunchy display in which he at one stage ripped the clothes off his two attractive female dancers, leaving them only in shimmering attire that barely covered a tenth of their bodies. The dancers then repaid the compliment by ripping off his jacket, all of which held the attention of the viewing public long enough for them to vote the catchy "Shake It" into third place, equalling Greece's best ever result by Antique in 2001 - until then.
In 2009 Rouvas represented Greece again as a singer, this time with the song "This is our night". Rouvas finished seventh that year.
His sexual orientation has been debated and he is sometimes considered to be a homosexual, although he has never indicated or admitted anything concerning this. This ambiguity is said to be intentional as a marketing trick (similar to the pseudo-lesbians t.A.T.u).
Rouvas, however, felt insulted during an interview for a French magazine in which the interviewer assumed that Rouvas was gay and directed his questions accordingly. In recent years, Rouvas openly makes appearances accompanied by his girlfriends, formerly Rebecca Wang and currently the Greek top model Katia Zygouli.
Rouvas and Zygouli married in July 3, 2017. The pair has four children: Anastasia (born November 2, 2008), Alexandros (born October 15, 2011), Ariadni (born January 3, 2013) and Apollon (born April 21, 2016).
As a pop artist
Rouvas is the first Greek male pop singer and possibly the only famous for attracting Greek Teenyboppers and 'fangirls' driving them in extreme (compared to Greek standards) reactions. These reactions are often described by majors as phenomenal, and are often compared to how English and American girls of the same age react for world-wide pop stars like Michael Jackson, like shouting, crying, pulling clothes, etc.
This singularity makes Rouvas a pop culture symbol in Greece, and an object of satire among mimes and comedians. They often impersonate him by mimicking his over-dramatization, as well as by satirizing the over-reactions of his fans. Rouvas is often criticized by enemies of the mainstream, like intellectuals, who often refer to him as a typical 'symbol' of this trend.
Rouvas also participated in the jury of several music talent shows (The X-factor Greece and The voice of Greece).