When it comes to resumes, nouns don't impress me; verbs do. Don't tell me what you are: tell me what you did. In your cover letter, tell me what you're good at.
You say you're the person everyone goes to when things go wrong. Is that because you debug production crashes better than anyone else on the team? Or is it because you keep your head in a crisis and are amazing at making a plan to solve big problems while others are paralyzed? Or are you someone who makes those pragmatic and practical lateral leaps that get past roadblocks when no-one else would ever have thought of that? Are you the only one who will tell the boss or the client the truth? The only one who really understands the system you're maintaining? When you rescue projects, what is it that you actually do?
Now go through each job in your resume and make sure there's a sentence that tells me that. What you do and why it matters. Put that on your resume and you'll impress me. I'll make up my own nouns (and adjectives) while I'm reading, and when I interview you I'll be seeing if you can prove your claims.