Flutter Developer Needed to Implement Smart Video Preloading (Instagram-style Feed)

We’re building an Instagram-style feed where each post contains multiple short videos.
Our backend (NestJS + Cloudflare Stream) is already implemented and working perfectly — videos are uploaded, processed, and streamed through Cloudflare.

Now, we need a senior Flutter developer who can implement a smart, memory-efficient video preloading system for the mobile app.

Goal of the Project:

To create an instant-play video experience (like Instagram or TikTok), where:
- The current video plays instantly and smoothly.
- The next post’s first video is preloaded in the background and ready to play when the user scrolls.
- Other videos in the same post are loaded only when the user opens them.
- This approach prevents high memory usage and app crashes that occur when too many video players are initialized simultaneously.

⚙️ Technical Context:
- Tech Stack: Flutter (mobile), NestJS (backend), Cloudflare Stream (video hosting)
- Feed Structure: Each post has 5 videos (HLS playback URLs from Cloudflare)
- Backend: Already implemented — provides video URLs and metadata

Your Task: Implement smart preloading, memory management, and smooth playback logic on Flutter side.

Responsibilities:
Implement a custom PreloadManager in Flutter to handle:
- Preloading only the current and next post’s first video.
- Managing a small video player pool (1 active, 1 preloaded).
- Disposing/evicting players when not needed to save memory.
- Optimize playback for instant start using Cloudflare Stream’s HLS manifests.
- Handle buffer thresholds, low-memory scenarios, and scroll-based preloading.
-Integrate with existing video_player or better_player plugin (you can recommend improvements).
- Test performance across devices and ensure app doesn’t crash due to high memory use.

What Success Looks Like:
- Scrolling through the feed feels instant and smooth.
- Each new post’s first video plays immediately when visible.
- No lag, stutter, or crash due to memory overload.
- Verified performance on both Android and iOS.