Swift UI iOS : work on video performance on mobile app similar to tiktok

We have built a app similar to tiktok with video feeds. We have few performance issues with video feeds that blocks us to go to production. We need to optimize the video loads similar to tiktok fashio of short video scrolling. We are looking for a mobile app developer who has experiene in performance optimization and Video handling in both iOS.  After this job, we can continue with all updates to iOS App and oppertunity to work on another iOS app that we have planned to develop after current release.

This is great oppertunity to work with our other mobile apps. This can be converted to long term contract.

NOTE: Beginners do not apply. This job is only for experienced swift mobile programmers and not for beginnger. 

MUST :
- Strong experience in Swift programming (no storyboard, no UIkit )
- Strong prior experience in handing videos through swift similar to tiktok video feed scrolls
- performance optimization

REQUIREMENTS :

• 3+ years of experience in mobile app developement
• Strong expereince developing in Swift
• Working with In app Video editing, effects and filters
• Should have published iOS apps in app store
• Solid understanding of the full mobile development life cycle
• Good sense of UI/UX designs
• Strong knowledge with using REST APIs and thrid party APIs
• Experience working in an agile/scrum development process
• A great attitude, collaborative spirit and openness to giving and receiving feedback