蔡(cai)(cai)明(ming)興取得MBA學(xue)位(wei)后,曾在美國(guo)信(xin)孚銀(yin)行(xing)(xing)紐約(yue)總部(bu)的亞洲部(bu)門任職,并且會臺協助成(cheng)(cheng)立信(xin)孚銀(yin)行(xing)(xing)臺北(bei)分行(xing)(xing)。1984年(nian)蔡(cai)(cai)明(ming)興進入富邦(bang)(bang)集(ji)團(tuan)工作,負責(ze)創立富邦(bang)(bang)證券(quan)富邦(bang)(bang)人壽和富邦(bang)(bang)投信(xin)等(deng)公司,這些公司在蔡(cai)(cai)明(ming)興帶(dai)領(ling)下,均成(cheng)(cheng)為各個金(jin)融領(ling)域(yu)的佼佼者。2001年(nian)富邦(bang)(bang)金(jin)控成(cheng)(cheng)立后,蔡(cai)(cai)明(ming)興擔任副董事長兼執(zhi)行(xing)(xing)長,又帶(dai)領(ling)富邦(bang)(bang)金(jin)控完(wan)成(cheng)(cheng)臺北(bei)銀(yin)行(xing)(xing)和香港富邦(bang)(bang)銀(yin)行(xing)(xing)等(deng)重要備案,使(shi)得富邦(bang)(bang)金(jin)控成(cheng)(cheng)為臺灣產品線最(zui)完(wan)整(zheng),區域(yu)化布局最(zui)快之(zhi)金(jin)融集(ji)團(tuan)。
蔡明興(xing)配偶蔡翁美(mei)慧(hui),畢業于(yu)美(mei)國南加(jia)大電機工(gong)(gong)程學系(xi),育有兩名(ming)子(zi)女,目(mu)前擔(dan)任(ren)富(fu)邦藝(yi)術基金會(hui)(hui)執行長,長期推(tui)動文(wen)(wen)化(hua)扎(zha)根(gen)和藝(yi)術生活化(hua)的理(li)念。蔡明興(xing)除全(quan)力支持配偶的文(wen)(wen)化(hua)工(gong)(gong)作外,本身亦致力于(yu)各項社(she)會(hui)(hui)藝(yi)術文(wen)(wen)化(hua)工(gong)(gong)作,并且擔(dan)任(ren)中華民國足(zu)球協會(hui)(hui)副理(li)事長、臺北市立美(mei)術館咨詢(xun)委員會(hui)(hui)委員、臺灣癌癥基金會(hui)(hui)董(dong)事等職務。