Popularly known as Zequinha, the 30-year-old has represented Portugal national side in FIFA U-20 World Cup 2007 and played for clubs like G D Tourinzense, F C Penafiel and Gondomar S C among others.
"I feel extremely happy to have such energy in our team. We are definitely working towards a great start with player like Zequinha coming on board," ATK principal owner Sanjiv Goenka said in a statement.
Zequinha thus became ATK's second foreigner after their marquee signing Robbie Keane.
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