The press conference formalized what has been set for months: Giulietti will step down as commissioner in December, and Lamont intends to nominate his well-regarded deputy, Eucalitto, to run ConnDOT at a crucial juncture for the rebuilding of highways and mass transit in America. Federal transportation funding is at an all-time high, available to Connecticut under formula and competitive grants. Virtually all of the state’s rail improvement priorities were included in the $24 billion in funding approved for the Northeast rail corridor. But the DOT’s engineering ranks are understaffed, the state must provide matching funds, and the construction industry long has complained that Connecticut moves too slowly on infrastructure. Historically, hiring has been slowed by the involvement of two other agencies, the Department of Administrative Services and the Office of Policy and Management. Eucalitto said the process has improved, with DAS quickly posting job openings.