CI3 to CI4 Complete Backend Upgrade

I'm looking for an experienced CodeIgniter developer to upgrade my application from CI3 to CI4. The project involves upgrading all files, including database queries. No rush timing but I appreciate consistent updates on progress. If you can demonstrate proficiency and experience with CodeIgniter and database management, I'd love to hear from you.

Skills & Experience:
- Proficient in CodeIgniter 3 & 4
- Knowledgeable in database queries
- Excellent time management
- Consistent communication skills
- Proven track record of similar upgrades.