Andre is a very talented and solid digital designer. For mobile and web apps, he has a wonderful, clean, balanced minimal style that is largely copied from Google's Material design specifications. His design skills are 5 stars.
His customer-service could use some improvement. Language translation and communication was an issue. We clearly indicated a width of 1320 and file requirements of Illustrator or Photoshop in our brief. He delivered Adobe XD files and 1920 width. Sometimes he didn't understand our feedback.
He skipped delivering a few items outlined in the brief.
If you're working with him, take 99 Designs advice to extend the final design round and get everything right before choosing him as the winner to help with responsiveness and follow-through.
I would work with him again as I greatly appreciate his level of design skills, but would manage him differently than we did and make sure we had enough time to work through time zone and language differences.