Sound design & final mix for a 2-minute video

I have a two minute corporate video for YouTube and web that needs professional sound design and a final mix. The voiceover and music are already in place and will be supplied as separate files. Your job is to bring the visuals to life with sound effects and deliver a polished, balanced final mix.

The picture edit is near final, but some motion graphics may still be tweaked after delivery, so the file delivery requirements below are essential.

Scope of work:
- Design and sync sound effects to picture (transitions, motion hits, ambience and similar, as appropriate to the edit)
- Balance voiceover, music and SFX into a final mix
- Master to around -14 LUFS, suitable for YouTube and web

Deliverables:
- Final mix as a 48kHz WAV
- Separate stems for voiceover, music and SFX
- Each individual sound effect also delivered as its own WAV, with every file exported from the same start point (00:00:00) so they all line up in my timeline. This is a firm requirement: if the motion changes, I need to remove or nudge a single effect without redoing the mix.

Please include in your proposal:
- A fixed price and turnaround time
- How many revision rounds are included
- Confirmation that all sound effects are licensed for commercial use on YouTube and the web
- One or two examples of similar corporate or brand work, ideally with before/after sound

I will share a private link to the video with shortlisted freelancers so you can confirm your quote. Proposals that address the separate-file requirement specifically will be prioritised.