Unless I'm missing something, I don't see how your twitter influence is important to any job except for paid endorsements.
If I'm hiring an engineer, a project manager, or a designer, I care about their ability to do the job, not about how much they influence their twitter followers.
There are numerous benefits to having someone with social influence work for your company. Say your developer has a large following on Twitter.
- Any problem that they don't know how to solve can be solicited to x number of people.
- If they encounter a bug in 3rd party software that your company uses and publicly bitch about it, the better chance you have to get a timely fix.
- If your company uses/creates open source software, it is more visibile, and there is a greater likelihood that more people will contribute to it.
- They market your company.
- They attract more desirable hires.
If I'm hiring an engineer, a project manager, or a designer, I care about their ability to do the job, not about how much they influence their twitter followers.