Do you plan on handling sanitization of roles so people can search by that? I ended up using a LONG case when statement to group roles into buckets, probably not ideal
Doing something similar to you, but focused on startups and jobs funded by Tier 1 investors: https://topstartups.io/
Probably not. I get the impression that job titles are one of the ways that recruiters and hiring managers "show their shine", so to speak, in terms of marketing open roles. Job titles can convey explicit and important information about the role's focus - things like "FPGA", or "New College Grad", or "DSP", for example. It's an opportunity for them to showcase what's special about the role in a succinct way. Sanitizing that away would reduce the amount of information given to all sides in the transaction. It also seems like a really broad task; there are way more niche specialties in this field than there are succinct buckets to place them in, job-title-wise.
I've found it more useful to tag roles based upon title and contents of the job description. It's a way to get the same info across without obscuring the employer's intent.