Resize Artwork for specific Amazon & Ingram Spark

I am seeking an experienced book cover production designer to resize and prepare four existing full cover designs for print distribution via Amazon KDP & IngramSpark

Each title requires:
1 x Paperback full wrap cover
1 x Hardback full wrap cover

Total output: 16 print-ready PDFs - this is a technical production task, not a redesign.

What I Will Provide:
High-resolution source PDFs (front, spine, back already designed)
Example layout templates
Final trim size
Page count and paper type for spine calculation

What You Must Deliver

For EACH book:
Amazon Paperback (print-ready PDF)
Amazon Hardback (print-ready PDF)
Ingram Paperback (print-ready PDF)
Ingram Hardback (print-ready PDF)

All files must:
Be CMYK (no RGB)
300 DPI minimum
Include 0.125" bleed
Have correctly calculated spine width
Have embedded fonts
Be flattened
Meet Amazon and IngramSpark upload standards
Use the correct barcodes per book label (will be provided)
Be correctly aligned for trim tolerance

Important Notes
Spine width differs between paperback and hardback.
Spine width may differ between Amazon and Ingram.
Typography and layout must remain unchanged.
This is a resizing and compliance adjustment only.

Required Experience

Please only apply if you:
Have previously prepared covers for both Amazon KDP and IngramSpark
Understand spine width calculation
Understand bleed and trim safety
Have print production experience (not just digital design)

Please share:
2–3 examples of print-ready book covers you prepared
Confirmation that you understand spine calculation difference
Estimated turnaround time.