Blur Background in a Complex Video | Rotoscopy

I need an experienced video editor to blur the background of a video. The length of the video is around 1:30. The background blur should only be applied to the background without impacting the subjects... (Budget: £20 - £250 GBP, Jobs: After Effects, Background Removal, DaVinci Resolve, Post-Production, Rotoscoping, Sound Design, VFX Art, Video Editing, Video Processing, Video Production)