React developer, having experience in Emotion react, fabric.js, material Ui

Need someone who can fix the following bugs of the image editor app that we are working on

1. Remove Blurry edges / Improve image quality in Eraser/restorer Canvas, when we upload the image the quality remains the same, but when we try to erase or restore the background it decreases the quality.
2. Fix the Zoom in/Zoom out.
3. Add the functionality to Drag the image inside the ---------- simple words, make the functionality to select the items in Canvas. Also, fix the responsiveness and canvas size in the mobile version.
4. Add an option in the download option for download as original size.
5. Fix Redo and Undo in the Eraser section.
6. Add a feature in the Image section to add any image on the canvas. And remove the background using our API with a button for selected items on Canvas.