Upgrade Mobile Game "NitroZoneX" (Unreal Engine)

I’m looking for an Unreal Engine developer (Blueprints preferred) to help me upgrade and polish a small arcade-style mobile game called NitrozoneX.

The game is already built with:

A working basic level

Player movement

Obstacles

Simple UI

Core mechanics

Now I need someone to improve and complete one full playable level with extra features.

Your Tasks

Expand the main level into a long, fun challenge

Add new obstacles, traps, and gameplay elements

Improve player control & polish the movement

Create a simple boss/end section

Fix bugs and optimize the environment

Light UI improvements if needed

Important Notes

No multiplayer, no garage, no shop, no advanced systems yet

This is a small job to upgrade and polish the existing level

If your work is good, there will be future paid tasks

Payment

Budget: $80–$120
(Fixed price based on experience)

Requirements

Experience with UE4/UE5 Blueprints

Able to work fast and communicate

Understand mobile optimization

Can show previous small projects or samples