I look forward to seeing you.
I am used to driving in Prague.
I prefer drivimg to going by coach.
I went from eating too much to drinking too much.
Note that in these examples,a to-infinitive is not possible, but a noun is, for example:
I look forward to the party.
I am used to Prague traffic.
I prefer cars to coaches.
I went from over-indulgence in food to alcoholism.
In your example, neither a gerund nor a noun is possible:
I'm here to applying for the job.X
I am here to the job/application.X