I am fairly new to linux and also ArchLinux so correct me if i am wrong but when i was checking the Packages section an Archlinux website i realized that there is an Electrum package there but it is signed with a different key (0xE711306E3C4F88BC) belonging to "Timothy Redaelli".
* all releases have always been signed by ThomasV (0x2BD5824B7F9470E6) as far as i can remember, and there is no mention of the other key anywhere that i could find.
https://www.archlinux.org/packages/community/any/electrum/I wanted to know if am missing something or does he have any affiliation with Electrum project and is the packages safe?
I believe that "Timothy Redaelli" is simply the user who created the Archlinux package for easy of use and bundling of Electrum into Archlinux.
Have you checked the actual executable within this package to see if it was signed by Thomas V? It is likely that the package is signed by Timothy and the actual executable is still signed by Thomas V.
If not, you can always just download and install Electrum from the official website.