Need Video Editor to Merge Whiteboard Animation Clips & Deliver Final Professional Video

I'm looking for an experienced Adobe After Effects / Adobe Premiere Pro video editor to assemble my whiteboard animation into a polished final video.

Project Overview

I already have all the animation clips generated. Your job is to combine them into one seamless, professional-quality animation.

Scope of Work
Merge all provided video clips into a single final video.
Trim clips where necessary to match the voiceover timing.
Synchronize the voiceover with the animation.
Make minor timing adjustments for smooth transitions and pacing.
Add simple, professional transitions where needed.
Add suitable royalty-free background music.
Balance the audio levels between the voiceover and background music.
Ensure the final video looks polished and professional.
Additional Requirement

I need the final video exported in multiple aspect ratios for different social media platforms:

16:9 (1920×1080) – YouTube / LinkedIn
1:1 (1080×1080) – LinkedIn Feed / Instagram Feed
9:16 (1080×1920) – Instagram Reels / LinkedIn Vertical / YouTube Shorts

Please ensure that all important content remains visible after resizing and reposition elements where necessary to optimize each format.

Skills Required
Adobe After Effects
Adobe Premiere Pro
Video Editing
Audio Synchronization
Motion Graphics (basic)
Experience creating social media videos

I can pay 200 per video.