To receive and send neurotransmitters throughout the body sending information between the brain and the senses / muscles in order to allow movement and senses.
The nerve cell/neuron has braches called dendrites coming off of it, these dendrites are long and are able to cling on to other cells and make it easier.Hope this helps!!!
There is a job market for welding jobs. I am not sure what location you are referring too, but my suggestion would be to contact an employment agency to find out where exact positions are.