Here’s your rewritten version without the word “gig,” making it smoother and more professional:
My name is Rimon, and I’m a Chrome extensions developer as well as a website and web applications developer.
I can create custom extensions, modify existing ones, or fix bugs based on your requirements.
Your next project is just one message away—feel free to get in touch!
If you want, I can also expand this into a fuller, more client-attractive description that explains your skills, experience, and the types of projects you excel at. That would make it stronger for service listings.