Pros
Tenable is easily the best company I've worked for, and I give especially high marks to our first tier support managers that do a wonderful job of keeping people focused but not making you feel like a cog in the machine. There's a great repository of experience which is pretty rare for a support desk. So far I've found senior & principle support engineers very knowledgeable and willing to help. The breadth of what support covers is so large everyday is a new challenge and I've learned much in my time here.
Cons
It's no joke the company is expanding quickly and a virtual army of sales people were hired. That by itself is not really a con. The problem is they did not upscale support for the influx of new customers nearly as fast so we are well behind the curve.