The 27-year-old, capped twice at senior level, has a wealth of SPL experience following spells with both Dundee and Dundee United.
Robertson moves to Easter Road following an unsuccessful brief spell at Bloomfield Road, making just one appearance for the Seasiders since his free summer transfer south, but says he is excited about the next chapter in his career.
Robertson said: "This is a great move for me and I'm really excited about what we can achieve at Hibs.
"The club has made a decent start to the season and we are in a strong position in order to be able to kick on and progress even further.
"There were other options on the table, but as soon as I spoke to Pat Fenlon I was convinced that Hibs were the right club for me."
Fenlon said: "Scott will be a valuable addition to our squad - he is a skilful box-to-box midfielder, who is strong in the air and can provide goals.
"He is a player who has been on our radar for a while, so we were pleased to be able to get the deal over the line.
"Again, Scott has signed until the summer of 2015 which brings continuity and we believe he is the type of player our fans will enjoy watching perform."