My Student Visa will expire soon.Can I get a Full time job?
I am not engineer so I don't think I can apply for Humanity (Jinbun Visa)
then what will it be?
Is Tokute- Ginou is the way?
If you are currently a student who has stayed in Japan with student visa and you hold the JLPT N4 certificate, you can get your visa converted to Specified Skill worker visa (Tokutei ginou visa)
To check industries supported for Specified Skill Visa, check this link - www.workjapan.jp/jobseeker/blog/visa/how-to-acquire-japan-work-visa.html
I think above suggestion is useful, but thinking from employer's point of view, they might prefer hiring full time person who contributed as part timer.
So if you know which industry you want to apply, prepare for test and also look for part time jobs with the company which has potential to hire you Full time!