Poshut. Like the Chazon Ish said, we can not have Charadim working under the auspicies of the state (which is why he (and other Charadim) held Sherut Leumi is Yehoreg V’al Ya’avor). Charadim must always be under the direct hechsher of the Gedolim.
I’m just surprised that there were any Charadim working for MADA. I imagine there are not, and the question came up only recently by someone who was unable to be “Mayvin Davar Mitoch Davar”.