Hi there!
I have just gone through your brief in detail and I guess you are looking for senior developer who can build web app which can edit and export PSD.
In my opinion, your web app supports follow functionalities.
1. Image upload/download
2. Crop/Slice tool
3. Select/Unselect tool
4. Remove background
5. Merge
6. Text/Brush
.....
I have an eye for clean and artful design, possess superior UI skills, and be able to translate high-level requirements into interaction flows and transform them into beautiful, intuitive, and functional user interfaces.
I can complete your project using React/Vue+laravel as you want.
Please send me message for our perfect project.
Best regards,
Taras!