B777 First Officer reported the nose gear failed to retract after take off. The flight crew returned to the departure airport.

Narrative

We pushed back late due to maintenance at the hangar; the balance was a catering truck broken down; blocking our push. We taxied to take-off Runway XXL Departure. I was the Pilot Flying. When I called positive rate; gear up; the captain moved the gear handle up and we got gear disagree and gear door. The Captain advised ATC we would need vectors to work on a gear problem. ATC assigned initial 5;000 feet and heading over the water; later 6;000 feet; we cleaned up flaps and the after take off check list and flew at clean maneuvering speed and never exceeded 227 knots. Indication showed both main gear up and nose gear down.The Captain ran the check list; talked with Dispatcher and Maintenance Control. Advised Flight Attendants and passengers. The decision was to return to ZZZ and land approximately 36;000 pounds overweight. The Captain took over flying and I set up for approach XXR and ran overweight checklist; descent and landing checks. The landing was very smooth. Tower had us make a right turn off onto [the taxiway] and talk to Airport Rescue and Firefighting. We made the remain seated monitored doors and brake temperature all was normal so advised Airport Rescue and Firefighting that we did not need any assistance. Got clearance to taxi to gate a tow in gate; ran after land; tow in and parking check ops advised we would move to another aircraft to complete flight to ZZZ1.