I've been looking for a job, and I've found how vaguely organizations define their data scientist and analyst roles in their job postings really frustrating. They tend to have a short description of the role, which is generally filled with buzzwords, followed by a list of requirements. I wish organizations would talk about what they wanted to do with their data instead.
For instance, a common description might say the candidate will be working with "big data" to help with "data-driven initiatives" and the requirements will be something like "knowledge of Excel, with a Masters in Statistics, or equivalent experience".
It's really hard to tailor a cover-letter or a resume to a job posting like that. For one thing, I can't even imagine what kind of work they are doing if they are using Excel for "big data". Second of all, I currently have a job, and writing cover letters and creating resumes takes a lot of time. By the time I get to the phone screen I've probably already spent at least a couple of hours applying. Plus, in the interest of keeping my cover letter and resume short, I have to leave off a fair amount of my experience and performance metrics.
Honestly, at this point I think I'm just going to start reaching out to people in the fields I'm interested in and asking them if they know of any roles that would fit my skill-set. The way I see it, I'd at least have a chance of getting feedback from someone who can view my skill-set holistically, rather than HR, who will let me know that I don't tick all their boxes (or vice versa).