The team I work on at Tenable is currently looking to hire another Vulnerability Research Engineer (http://app.jobvite.com/m?3RC1riwI) to join the Nessus Research team. Primary responsibilities include researching recently published vulnerabilities and then writing plugins for the Nessus vulnerability scanner.
This is a remote position and does not require relocation. The job description linked is a decent summary of what the position entails, but if you have any questions, I'd be more than happy to answer them as best I can (firstname.lastname@example.org).
The interview process for this includes contact with a recruiter, a short skills assessment (via hackerrank), and interviews with those you'll work with on a daily basis. Travel is not required for interviews.
If this position is not of interest, there are many other openings to be considered as well (dev/research and otherwise): http://app.jobvite.com/m?3OV2riwZ
Disclaimer: Both of the above links are referral links