The title and exact job details will depend upon the company but you can expect practical/hands-on work. Maybe building prototypes and testing using bench test equipment.
What size company is it? Do they manufacture? Have you researched their business interests?
It would be useful experience to have if you have not worked in this field before but it depends on if there will be opportunities to develop your career further (they might want a bench technician for the next 20 years, not someone that wants to be a principal design engineer by then). Most companies would probably not class this as entry level as a certain proficiency with the tools and procedures is expected. Fault-finding to component level is something you might want to read up on. They might be looking for someone with practical experience but you will have a chance if you want to do this work and can convince then that you have the skills to get started in the position.
Even if you don't think that the job is for you attend an interview if you can for the experience and hopefully a tour of their site (you should always get a tour!).
Some things to be familiar with, not an exhaustive list:
Following diagrams (there isn't a standard as such and these vary from place to place).
Writing reports.
Standard test equipment; ocsilloscope, DMM, waveform generator...
Have good component recognition skills.
Building circuits (be able to solder and perform rework!).
Word, Excel.
All the best!