Hi,
I am an expert in Atlassian Products Development (Jira, Confluence) with more than 3 years working in this field. I can deliver you the best result.
I have developed many plugins (including for Marketplace and Internal Customers), you can view some of them on our vendor page here [login to view URL]
You can also go to my LinkedIn profile to see who I am: [login to view URL]
If you are interested, please contact me.
Cheers,
Nhac