Video Editing: Merge & Sync 1080p Clips

I need a skilled video editor to merge and sync video clips I've trimmed.

Requirements:
- Merge new clips into original sequence
- Maintain 1080p resolution
- Ensure audio and video are perfectly synced
- Use smooth horizontal slide transitions

Deliverables:
- Final video in 1080p (MP4 format)
- Properly synced audio and visuals
- Clean transitions between scenes

Ideal skills and experience:
- Proficiency in video editing software (e.g., Adobe Premiere Pro, Final Cut Pro)
- Experience with 1080p video editing and custom transitions
- Attention to detail for syncing audio and video