Ukrainian IT-market has proven to be a good option to build development teams. It is cost efficient and outstands with highly qualified developers. Considering the risks – they will arise regardless of the country where you want to hire a remote developer or team.
I have been working with one Ukrainian company for a while and must say that they do a great job. You can find more information on their website. https://www.cybercraftinc.com
Yes, I worked with Ukrainian companies. IT Outsourcing from Ukraine are very strong and professional. I'd reccomend such web and mobile app development teams from there:
1. Axisbits (https://clutch.co/profile/axisbits)
2. Django Stars (https://clutch.co/profile/django-stars)
3. Exadel (https://clutch.co/profile/exadel)