Flutter developer - 4 month contract

I am currently working with an exciting Fintech start up who are currently in Stealth mode.  They are looking to build their app from the ground up so are looking for someone with start up experience.  4 month contract (possibility of extensions)  £450 per day  Outside IR35  Essentials: - 3 years experience with Flutter  - Start up exposure - Native Mobile background  - Fintech experience  Please note this role does not offer sponsorship :)