Amiri, who is captain of Afghanistan's national team, comes to the Goan outfit from Mumbai FC.
"I am delighted to sign for Dempo. I look forward to repaying the faith showed in me by the coach. My focus will be to play well and have a successful season with Dempo," stated the 26-year-old defender yesterday.
Amiri hit headlines when he led Afghanistan to a 2-0 win over India in the SAFF Cup 2013. He was also voted the FPAI Fans 'Player of the Year for the 2012-13 season in India.
Besides Amiri, Dempo has got another new recruit, Australian striker Tolgay Ozbey.