But that looks like a way to put people off? Some will see it as "cis" in the sense of 'cisgender' which is just funny, no one will think of IT abbreviation (i am in the industry for 20+ years and heard it for the first time today), and if someone remembers what CIS is (few outside of Russia know), they will see it as "Putin and his puppet regimes" and see negatively. Anything that has to do with Russia is toxic now, you need to look for a way to hide or obscure it rather that bring forward.
I am doing a lot of sales in development and i read a convo on one forum where clients gather and the convo went like "...their company is is Croatia but i suspect they are Russians. where do i report?".