▁Gut mans ▁served ▁as ▁CE O ▁of ▁Z end ▁Techn ologies ▁until ▁October ▁ 2 0 1 5 ▁when ▁Z end ▁was ▁acquired ▁by ▁Rog ue ▁W ave ▁Software . ▁Before ▁being ▁appointed ▁CE O ▁in ▁February ▁ 2 0 0 9 , ▁he ▁led ▁Z end ' s ▁R & D ▁including ▁development ▁of ▁all ▁Z end ▁products ▁and ▁Z end ' s ▁contributions ▁to ▁the ▁open - source ▁Z end ▁Framework ▁and ▁PHP ▁Development ▁Tools ▁projects . ▁He ▁has ▁participated ▁at ▁Z end ▁in ▁its ▁corpor ate ▁finan cing ▁and ▁has ▁also ▁led ▁al li ances ▁with ▁vend ors ▁like ▁Ad obe , ▁IBM , ▁Microsoft , ▁and ▁Oracle . ▁ ▁Gut mans ▁served ▁on ▁the ▁board ▁of ▁the ▁ ▁Eclipse ▁Foundation ▁ ▁( Oct ober ▁ 2 0 0 5 ▁- ▁October ▁ 2 0 0 8 ), ▁is ▁an ▁emer it us ▁member ▁of ▁the ▁Apache ▁Software ▁Foundation , ▁and ▁was ▁nominated ▁for ▁the ▁F SF ▁Award ▁for ▁the ▁Ad van cement ▁of ▁Free ▁Software ▁in ▁ 1 9 9 9 . ▁ ▁In ▁ 2 0 0 4 ▁he ▁wrote ▁a ▁book ▁called ▁" PHP ▁ 5 ▁Power ▁Program ming " ▁ ▁together ▁with ▁St ig ▁Bak ken ▁and ▁Der ick ▁R eth ans . ▁ ▁Gut mans ▁was ▁recognized ▁by ▁Computer World ▁magazine ▁in ▁July ▁ 2 0 0 7 ▁▁ ▁in ▁their ▁article ▁“ 4 0 ▁Under ▁ 4 0 : ▁ 4 0 ▁In nov ative ▁IT ▁People ▁to ▁Watch , ▁Under ▁the ▁Age ▁of