I worked at ECC full-time (More than 8 years)
Pretty impressive staff throughout all departments. Upper Mgmt. typically strong, thorough and mentoring. Many diverse and challenging projects.
Like with other companies of this nature and sector, plan on 60 hour week average and lots of travel.
Advice to Management
Provide needed training, when needed (I had 8 years of good reviews, but needed IT training was mentioned in all reviews but never received.
I applied through an employee referral. The process took 1+ week. I interviewed at ECC (Denver, CO).
I had interviewed with their Ops Mgnr who was already aware of some of my abilities as we both represented competing contractors, on large scale projects at the same DoD and DoE properties.
My situation was a bit different than for most people as ECC already had me in mind for specific projects, they made me an offer package that I was pleased with.