I've had jobs both in the software development and IT fields, both using very different technologies with some overlap. I want to highlight that I am proficient in both areas. My original resume had a "Skills" section, however I feel like it would cause a bit of confusion due to the different technology stacks that I've used. I'm also torn because 2 jobs prior to my tech-specific jobs were both generic call center jobs, and therefore I wouldn't apply a "technologies used" section to those.
Would it be appropriate to have a "technologies used" under the appropriate employers? Or would it be better to do this some other way on my resume? Would it also be an issue to highlight proficiency with technologies on some of my past employers without listing the same thing on others?