Full Stack Developer Needed for Web Application Upgrade

I'm seeking a skilled Full Stack Developer to assist in upgrading my existing web application. The specific upgrades have not been defined yet, so I am looking for someone who can proactively identify areas for improvement and implement necessary changes.

Ideal Skills and Experience:
- Proven experience as a Full Stack Developer
- Previous experience in upgrading web applications- Proficiency in both front-end and back-end languages

- Strong problem-solving skills
- Excellent communication skills