Greeting,
I have read the project description in details and definitely I can provide you the maintenance of your self service portal.
I'm a veteran MEAN Stack Developer having more than 8 years of experience and have immense expertise with AngularJs, MeteorJs, NodeJs, ExpressJs, GatsbyJs and MonogoDB as well.
Please connect with me so we can discuss the problem and solution and proceed to the executive step. Awaiting your response.
You will definitely experience a WOW factor in our work.
Regards,
HB