DelMarVa is the geographic peninsula east of Chesapeake Bay and west of Delaware Bay.
The ring of urban sprawl around the federal capital is "The DC Area". Unfortunately, "DC Metro" is the train system, and "DC Metropolis" is where Superman lives.
The only (well paying) tech jobs in Delaware would probably be working on internal systems for credit card companies in Wilmington. Possibly also registered agent software for CT or CSC, or some other business revolving around corporate registration and reporting.
I can't help thinking "Columbia Metropolis" would be a better name for the urban areas around the District of Columbia. But I don't have the authority to just change the names of things.