Hello,
I am working as robotics research engineer and have good practical knowledge towards autonomous vehicles. I am confident that I can definitely help you ,
Let me know the complete details of hardware you are choosing like which company LiDar, StereoCameras, Odometry Source?
Please let me know the complete details, I will get your job done
Regarding ROS experience :- I am working professional in ROS, and I have done projects on Autonomous navigation of mobile robots and drones, robotic arm motion planning using ROS framework.