Analyse at their portfolio and just listen how many clients they've ranked as well.
How many projects have these team members worked on for this employer the actual success stories can they tell? https://arhsloboda.ru/bitrix/rk.php?id=22&site_id=s1&event1=banner&event2=click&event3=1+5b225bmain_sliderd0%91b5%d1d0%b5b4%d0d0%b8&goto=https://Javhoy.com/article.php%3Fid=40882