First of all, I've done plenty of hiring. You should not worry about a 12 month gap. It will have a minor negative impact on getting callbacks. You might have to work slightly harder at your applications to compensate. If you're already getting calls and interviews, you've already passed through the filter since a gap is most likely to hurt you while a HR recruiter is sorting through a large pile of resumes.
You can still do things with your resume to make it more likely to get through the resume pile filter. Did you do any personal projects, classes or open source that can show continues professional interest and passion? Try putting something on your resume about it. Or if you've really done nothing but relax(which is OK!), now can be a good time to start working on professional development, then you have something to speak to when asked what you've been doing with your time.
You can still do things with your resume to make it more likely to get through the resume pile filter. Did you do any personal projects, classes or open source that can show continues professional interest and passion? Try putting something on your resume about it. Or if you've really done nothing but relax(which is OK!), now can be a good time to start working on professional development, then you have something to speak to when asked what you've been doing with your time.