No. On the contrary, the authentic evidence from Ahlul Bayt (AS) who don't say but what the Prophet (SAWA) said, is very clear that circumcision is obligatory.
Circumcision is obligatory as an act by itself on every Muslim males and is a condition for validity of Tawaf around the Ka’ba in Hajj or Umra.
Circumcision is obligatory on every Muslim male or convert male to Islam. Being a convert to Islam, it is compulsory for you to get circumcised as the Hadeeth narrated from Imam Jafar Al-Sadiq (AS) that Imam Ali (AS) said: When a man becomes a Muslim, he must get circumcised even if he reached the age of eighty.
( Was'il al-Shia by al-Hurr al-Aamili, vol. 21, page 440.)
It is not allowed for man to perform Tawaf ( around the Ka'bah) if he is not circumcised as it narrated from Imam Jafar Al-Sadiq ( AS): uncircumcised man is not allowed to do Tawaf around Ka'bah. ( Wasa'il al-Shia by al-Hurr al-Aamili, vol. 13, page 270).