General Mechanical Technician is another name for mechanical maintenance. in my experience, if "alarm response" is a big part of the gig then run for the hills because this company intends to run their equipment until its literally a pile of flaming grease and beeping melted plastic.

alarm response means you as a mech tech/mechanical maintenance have failed proactive or preventative work and will spend the rest of your career working mandatory overtime to fix what aint fixable anymore. the reason for this failure is nearly always management pushing for higher uptime and output. alarm response should never constitute a new factories big ticket issues.