I worked at Matlen Silver full-time (Less than a year)
Matlen Silver team is a honest and straight forward folks with desire to achieve a very high level focus with clients and they put their 200% effort to make their employee's to make it a safe heaven.
I haven't found anything negative with then.
I applied online. The process took 2 weeks. I interviewed at Matlen Silver (Jersey City, NJ) in October 2017.
One phone screen. One onsite. The phone screen took around one hour. And the onsite interview took around 1 hour. The interviewer were very nice and it went on very well.