The Jira Enhancer plugin will probably give you what you need.
Create 2 custom fields
Create a filter "resolutiondate <= 30d".
Use the "Two Dimensional Filter" or "Issue Statistics" gadget on a dashboard and put the "Last Resolution User" a one of the parameters into the gadget config. Choose the filter to limit the list of issues.
This of course won't cover the use case of an issue being resolved multiple times in the last 30 days by different users. It'll just show the last user to resolve.
Badges are a great way to show off community activity, whether you’re a newbie or a Champion.Learn more
Hi Atlassian Community! My name is Shana, and I’m on the Jira Software team. One of the many reasons this Community exists is to connect you to others on similar product journeys or with comparabl...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs