Magento Troubleshooting & ONIX Integration

I need a Magento expert to fix several issues affecting the site.

These include:
- Image gallery problems
- Products not showing in the beauty category
- Connecting ONIX 3.1.2 for books to Magento from supplier stock

Once the issues are fixed, I would like to keep you on retainer for any future fixes.

Ideal skills for the job:
- Extensive experience with Magento
- Familiarity with ONIX
- Strong troubleshooting skills