Ramljak grew up in Posušje where he drew attention to himself with his plays for the Croatian national basketball youth teams.

He also participated at the 2010 Summer Youth Olympics were his team won the silver medal.

On April 22, 2019, Ramljak signed with the Israeli team Hapoel Be'er Sheva,[4] but eventually the deal fell through and he returned to play for Zrinjski for the rest of the season.

[7] On January 17, 2021, he signed with Twarde Pierniki Toruń of the Polish Basketball League (PLK).

[8] In September, 2021, he joined his home town club Posušje of the Bosnian League.